WO2020180057A1

WO2020180057A1 - Upper leg and hip exercise method and device to preserve knee and ankle joint while exercising

Info

Publication number: WO2020180057A1
Application number: PCT/KR2020/002881
Authority: WO
Inventors: Eun Bee Kim
Original assignee: Eun Bee Kim
Priority date: 2019-03-04
Filing date: 2020-02-28
Publication date: 2020-09-10
Also published as: AU2020233516B2; AU2020233516A1; CN114040803A; CA3132739A1; GB202112356D0

Abstract

The exercise device according to an embodiment of the present invention includes: an arm pivotably connected to the frame and rotatable wherein the arm comprises an arm pivot axis aligned with a user's hip joint; a leg pad pivotably connected to a lower end of the arm and configured to contact the user's leg during use; a seat separated from the leg pad when viewed from above and is configured to enable the exercising leg of the user to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat and the exercising leg is placed on the leg pad and pulled to the chest of the user. In addition, it also includes,two hip joint pivot axis in a single arm and knee joint motions.

Description

UPPER LEG AND HIP EXERCISE METHOD AND DEVICE TO PRESERVE KNEE AND ANKLE JOINT WHILE EXERCISING

The present disclosure relates to an exercise method and an exercise device for performing exercises suitable to strengthen thigh and hip muscles while protecting the knee and ankle joints such as a leg press machine, a total hip machine, a hip abductor machine, a leg extension machine, a leg curl machine, a stationary bicycle, and more particularly, to an exercise method and an exercise device for strengthening thigh and hip muscles while protecting knee and ankle joints by enabling a user to locate a hip and a thigh of a leg of two legs of the user that is not exercising on a seat and locate a lower end of an arm on the other leg of two legs of the user that is exercising and move the exercising leg backward from an exercise starting position where the exercising leg is pulled toward the user's chest such that the user's exercising leg moves during exercises and the user flexes the hip of the exercising leg.

To this end, the exercise device according to the present disclosure includes a seat configured to support a thigh and a hip of a leg of two legs of the user that is not exercising in the sitting or lying position and the arm rotatably attached within a radius of 20 cm from the user's pelvis in a sagittal plane, wherein an end of the arm is rotatably placed on the user's leg of a two that is exercising.

The exercise device allows the user to exercise the thigh and gluteal muscles while protecting knee and ankle joints of the leg that is not exercising by providing a seat separately from the leg pad when viewed from above, so that the device enables the exercising leg of the user to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising are placed on the seat and the other leg is placed on the leg pad and pulled to the chest of the user.

Thigh and hip muscles account for more than a third of all muscles in our body. Building thigh and hip muscles may reduce the risk of diabetes, etc., may prevent obesity, and may promote health after middle age, and may also help to improve the physical fitness and sport ability of athletes.

However, exercises for strengthening thigh and hip muscles apply a load to ankle and knee joints, and thus knee osteoarthritis and chondromalacia are common among people who do strength training. Also, it is difficult for people with weak knees and ankle joints such as elders or obese people to perform exercises for strengthening thigh and hip muscles. Accordingly, there is a demand for an exercise device for training thigh and hip muscles without adding stress to the knees and joints.

In general, a user performs an exercise for strengthening thigh and hip muscles by pulling his/her legs toward the chest and pushing them outward with the pelvis as an axis, as shown in FIG. 1. Also, in a general bicycle, since a high hip motion range is limited to a rotation radius of a crank connected to a bicycle pedal, as shown in FIG. 2, the user's exercise is repeatedly performed only in a relatively small space when compared to the high hip motion range, and thus exercise efficiency in utilization of thigh and hip muscles is limited.

However, existing exercise methods and exercise devices may damage the knees and ankle joints because a load is directly transmitted to the ankles and knees, and thus it is not suitable for people with weak knees and ankle joints to use the existing exercise methods and exercise devices.

Accordingly, the present disclosure is configured to reduce a force transmitted to the knees and ankles by enabling a user to locate a foot plate or a foot pad of an exercise machine connected to a weight on his/her leg and pull his/her legs toward the chest and push them backward in a sitting, lying, or prone position.

When the exercise device according to an embodiment of the present disclosure is used, the user's thigh and hip muscles are enabled to perform lateral rotation and adduction as well as extension of the hip joints and extension of the knee joints and a two axes motion.

This application is a continuation-in-part of, U.S. application No. 16/575,447, filed on Sep. 19, 2019, which is a continuation-in-part of U.S. application No. 1655703, which is filed on Aug. 29, 2019, which is a division of U.S. application No. 15/373,350, which entered the U.S. on Dec. 7, 2016, from KR application No. 10-2016-0164260, filed on Dec. 5, 2016, which is patented on Feb. 20, 2019, in the KR Intellectual Property Office. This application claims the benefit of priority and incorporates by reference, KR Application No. 10-2018-0107382, filed on Sept. 7, 2018; KR Application No. 10-2019-0025484, filed on Mar. 4, 2019; KR Application No. 10-2019-0017985, filed on Feb. 15, 2019, which are patented in KR Intellectual Property Office, and are divisions of KR application No. 10-2016-0164260, filed on Dec. 5, 2016, in the KR Intellectual Property Office, which entered the U.S. on Dec. 7, 2016. This application claims the benefit of priority and incorporates by reference, U.S. application No. 16543613, filed on Aug. 18, 2019; U.S. application No. 16543631, filed on Aug. 19, 2019; U.S. application No. 16554703, filed on Aug. 29, 2019, which are divisions of U.S. application No. 15/372,350, filed on Dec. 7, 2016; Korean Application No. 10-2019-0041101, filed on April. 8, 2019; Korean Application No. 10-2019-0041245, filed on April 9, 2019; Korean Application No. 10-2019-0094661, filed on Aug. 4, 2019; Korean Application No. 10-2019-0097870, filed on Aug. 9, 2019; Korean Application No. 10-2019-0107818 entitled Leg and hip exercise device, filed on Aug. 31, 2019; Korean Application No. 10-2019-0107819, filed on Aug. 31, 2019; Korean Application No. 10-2019-0111516, filed on Sept. 9, 2019; Korean Application No. 10-2019-0111155, filed on Sept. 9, 2019; Korean Application No. 10-2019-0111797, filed on Sept. 9, 2019, Korean Application No. 10-2019-0116635, filed on Sept. 23, 2019, in the Korean Intellectual Property Office, Korean Application No. 20-2020-0000455, filed on Feb. 13, 2020, in the Korean Intellectual Property Office. The present application has the same inventor as the aforementioned applications.

However, exercises for strengthening thigh and hip muscles apply a load to ankle and knee joints, and thus knee osteoarthritis and chondromalacia are common among people who do strength training. Also, it is difficult for people with weak knees and ankle joints such as elders or obese people to perform exercises for strengthening thigh and hip muscles. Accordingly, there is a demand for an exercise device for training thigh and hip muscles without adding stress to the knees and joints. In general, a user performs an exercise for strengthening thigh and hip muscles by pulling his/her legs toward the chest and pushing them outward with the pelvis as an axis, as shown in FIG. 1. Also, in a general bicycle, since a high hip motion range is limited to a rotation radius of a crank connected to a bicycle pedal, as shown in FIG. 2, the user's exercise is repeatedly performed only in a relatively small space when compared to the high hip motion range, and thus exercise efficiency in utilization of thigh and hip muscles is limited.

In addition, existing exercise methods and exercise devices may damage the knees and ankle joints because a load is directly transmitted to the ankles and knees of the other leg of the two that is not exercising, and thus it is not suitable for people with weak knees and ankle joints to use the existing exercise methods and exercise devices.

In addition, the user's exercise is repeatedly performed only in a relatively small space when compared to the high hip motion range, and thus exercise efficiency in utilization of thigh and hip muscles was limited.

Thus, the present exercise device enables the user to perform lateral rotation and adduction as well as extension of the hip joints and extension of the knee joints. Also, the present disclosure enables the exercising leg of the user to rotate in a three-dimentional space while the other leg is on the seat. The user may perform rotation of the user's exercising leg of the two both in a plane perpendicular to the graound and a plane parallel to the ground.

The present exercise device enables the user to perform lateral rotation and adduction as well as extension of the hip joints and extension of the knee joints while protecting the resting leg of the user's knee and ankle. Also, the present disclosure enables the exercising leg of the user to rotate in a three-dimentional space while the other leg is resting on the seat. The user may perform rotation of the user's exercising leg of the two both in a plane perpendicular to the ground and a plane parallel to the ground.

FIG. 1 is a view illustrating a general hip joint motion range in a sagittal plane;

FIG. 2 is a view illustrating a motion range of a bicycle crank;

FIG. 3 is a view for describing an exercise device according to an embodiment of the present invention to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 4 is a diagram for describing an exercise device according to an embodiment of the present invention, the diagram showing a rectangular shaped seat base which is provided as a seat angle fixing unit;

FIG. 5 is a view for describing the exercise device according to an embodiment of the present invention to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user or vice versa;

FIG. 6 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is adjusted to be unseparated from the leg pad when viewed from above, in order to perform adduction of the right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 7 is a view for describing the exercise device according to an embodiment of the present disclosure to which the seat is attached to be separated from the leg pad when the arm is rotated to be in the center and viewed from above, in order to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 8 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 9 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 11 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is adjusted to be unseparated from the leg pad when viewed from above, in order to induct the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 12 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is adjusted to be unseparated from the leg pad when viewed from above, in order to lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90 degrees;

FIG. 13 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is attached to be separated from the leg pad when the arm is rotated to be in the center and viewed from above, in order to sit on the seat with both of the user's hip and thigh and perform leg extension exercises;

FIG. 14 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's left leg when the user is sitting on the seat with the right leg and the right hip of the user;

FIG. 15 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's left leg when the user is sitting on the seat with the right leg and the right hip of the user;

FIG. 16 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when the arm is rotated to be in the center and viewed from above, and it is adjusted to perform an extension and abduction operation of the user's left leg when the user is sitting on the seat with the right leg and the right hip of the user;

FIG. 17 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, and it is adjusted to perform an extension and abduction operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user;

FIG. 18 is a partial view illustrating a two axes mechanism 44a of FIG. 17 which is provided on the arm and the arm is rotatable about both the x-axis (parallel to the ground) and the y-axis (perpendicular to the ground) according to the present disclosure;

FIG. 19 is an exploded perspective view of the two axis mechanism of FIG. 18.

FIG. 20 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is adjusted to be unseparated from the leg pad when viewed from above, and the diagram illustrates a seat strut attachment unit for attaching the seat strut to the arm strut or separating the seat strut from the arm strut on the user's purpose.

FIG. 21 is a diagram for describing the exercise device according to an embodiment of the present invention, the diagram showing a state in which the seat is adjusted to be unseparated from the leg pad when viewed from above, in order to lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis; or perform stretching his/her knees from starting position where the thighs and hips are on the seat and knees are bend to 90 degrees; or curling his/her knees motion from starting position where the thighs and hips are on the seat and knees are stretched and the leg pad is on his/her back of the lower legs.

FIG. 22 is a diagram for describing the exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above, in order to perform an extension operation of the user's left leg when the user is sitting on the seat.

FIGS. 23 is a picture of the exercise device according to an embodiment of the present disclosure in which the frame comprises an arm strut and a seat strut; wherein the two axes mechanism is on the arm strut.

FIGS. 24 is a picture of the exercise device according to an embodiment of the present disclosure in which the arm is set by the starting region fixing unit.

FIGS. 25 is a picture of the exercise device according to an embodiment of the present disclosure wherein the exercising leg of the user is at a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat and the exercising leg is placed on the leg pad and pulled to the chest of the user.

FIGS. 26 is a picture of the exercise device according to an embodiment of the present disclosure wherein the exercising leg of the user is in a final position of rotating in a three-dimentional space. A user's foot of the exercising leg is on the leg pad while the other leg is on the seat. The user is performing rotation of the user's exercising leg of the two, both in a plane perpendicular to the graound and a plane parallel to the ground.

FIGS. 16 and 17 illustrate the exercise device according to an embodiment of the present disclosure in which a two axes mechanism 44a is provided on the frame, that enable a pivot axis of the arm portion to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis, so that, the two axes mechanism 44a provided on the frame allow the user to sit or lie on the seat with a hip and a thigh of two legs of the user, locate the other leg of the two legs of the user on the leg pad, and move the leg which is on the leg pad backward and rotate the leg rightward or vice versa; or spread the leg apart or put together, from an exercise starting position where the exercising leg is pulled toward the user's chest and put together or spread apart while the other leg of the user is on the seat.

In the following description, well-known elements are not described in detail since they would obscure the invention with unnecessary detail. Various modifications and alternatives may be made in the present disclosure, and embodiments will herein be described in detail. It should be understood, however, that there is no intent to limit embodiments to the particular forms disclosed, but on the contrary, embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure. The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of embodiments. It will be further understood that the terms "comprises", "comprising", "includes", and/or "including", when used herein, specify the presence of stated features, integers, elements, components, and/or groups thereof but do not preclude the presence or addition of one or more other features, integers, elements, components, and/or groups thereof.

Embodiments of an exercise for strengthening thigh and hip muscles of the present disclosure for accomplishing the objectives will now be described with reference to the attached drawings.

FIGS. 1 and 2 are views respectively illustrating a general hip joint motion range in a sagittal plane and a motion range of a bicycle crank. FIGS. 3, through Fig. 16 are views in which exercise devices according to an embodiment of the present disclosure include: an arm 32 pivotably connected to the frame 10 and rotatable wherein the arm comprises an arm pivot axis 44 aligned with a user's hip joint; a handle connected to a lower end of the seat 20 or to the frame 10 and extending therefrom; a seat 20 which is provided in correspondence to a hip and a thigh of a leg of two legs of a user that is not exercising so as to support the hip and the thigh of the leg that is not exercising and not to support the hip nor the thigh of the other leg of the user, and thus the seat 20 is separated from the leg pad 64 when viewed from above 20b. The invention is configured to enable the exercising leg of the user to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat 20 and the exercising leg is placed on the leg pad 56 and pulled to the chest of the user. FIGS. 6, 11, 12, 13 are views in which the seat is provided separately from the leg pad 64 when viewed from above 20b, and adjusted by the user with a seat angle fixing unit, a seat location fixing unit or an arm location fixing unit, to be unseparated from the leg pad 64 when viewed from above 20a, so that, the user can perform other exercises additionally according to the purpose. FIG 16, 17 are views illustrating a two axes mechanism 44a which is attached to an exercise device according to an embodiment of the present invention. FIGS. 18, 19 are partial views illustrating the two axes mechanism 44a of FIGS. 16, 17 which is provided on the arm 32. A detailed configuration is illustrated and will be described in detail.

FIG. 3 describes an exercise device according to an embodiment of the present invention, in which an arm 32 is rotatably connected to the resistive force strut of the frame 10c, and a leg pad 64, an arm axis 44, a seat 20, an arm connector 33, cross strut of the frame 14, a handle 114, an arm pivot axis 44, a rear ground support member of the frame 19, a seat strut of the frame 13, knee support for supporting a leg of two legs of the user that is not exercising 63, knee support height fix unit 69, knee support right/left adjustment unit 68, foot rest 65, a set of weight stack 71, a seat angle fixing unit 116 which is on the frame are attached according to an embodiment of the present invention and shows a state in which a user adjusted a seat to be perpendicular to a leg pad when viewed above 20b enabling a user to locate a hip and a thigh of a right leg of two legs of the user that is not exercising and set the arm starting region fixing unit 45 to the right side when viewed from above in order to perform a press down and kick back motion of the left leg of the user.

FIG. 4 describes an exercise device according to an embodiment of the present invention, in which an arm is 32 rotatably connected to the seat strut of the frame 13, and a leg pad 64, an arm axis 44, a seat 20, a cross strut of the frame 14, a handle 114, a foot support for supporting a foot of two feet of the user that is not exercising 61, a handle strut of the frame 10a, a seat strut of the frame 13, an elastic ban 75 as a resistive force, and shows a state in which a seat base 21 having a rectangular shape are provided, such that a user may attach the seat at a 90 degree, 180 degree, 270 degree, or 360 degree angle when viewed from above according to purposes.

FIG. 5 describes an exercise device according to an embodiment of the present invention, in which an arm 32 is rotatably connected to the seat strut of the frame 13, and a leg pad 64, a seat in a state perpendicular to the leg pad 20b, a cross strut of the frame 14, a handle 114, a frame 10, an elastic band 75 as a resistive force, are provided and shows a state in which the angle of the seat is adjusted to 0 or 360 degrees around the seat support when viewed from above 20b, such that a user's leg may perform an hip extension operation.

FIG. 6 describes an exercise device according to an embodiment of the present invention, in which an arm 32 is rotatably connected to the seat strut of the frame 13, and a leg pad 64, a seat in a state parallel to the leg pad 20a, a cross strut of the frame 14, a handle 114, a frame 10, a foot support for supporting a foot of two feet of the user that is not exercising 61, an elastic band 75 as a resistive force, a seat holder 25 for holding the seat 20b are provided, and shows a state in which the seat is attached to a seat base and the angle of the seat is adjusted to 20a when viewed from above 20a to enable a user's legs to perform abduction and adduction.

FIG. 7 describes an exercise device according to an embodiment of the present invention, in which an arm 32 is rotatably connected to the seat strut of the frame 13, and a leg pad 64, a seat in a state perpendicular to the leg pad 20b, a cross strut of the frame 14, a handle 114, a frame 10, a leg pad 64, a foot support for supporting a foot of two feet of the user that is not exercising 61, a set of weight stack 71 as a resistive force, a foot support fixing unit 65 capable of changing the position of the foot support to the left or right. A foot support height fixing unit 66 that may adjust the height of the foot support height, a seat strut of a frame 13, an arm starting region fixing unit 45, a roller for arm starting fixing unit 45, a seat handle 12, a seat holder 25 for holding the seat 20b, a seat angle fixing unit 116, a roller for seat angle fixing unit 35, a roller base for sit angle fixing unit 36 are provided and shows a state in which the seat angle fixing unit for adjusting the angle between the seat and frame is adjusted to enable the user to perform a press down and kick back motion of the right leg.

FIG. 8 describes an exercise device according to an embodiment of the present invention, to which the seat is attached to be separated from the leg pad when viewed from above 20b, and a seat angle fixing unit 116 is attached under the seat, and adjusted to perform an extension operation of the user's right leg when the user is sitting on the seat with the left leg and the left hip of the user.

FIG. 9 describes a state in which a seat handle 12, a handle 114, a frame 10, a seat 20, an arm 32, an arm length fixing unit 52, an arm angle fixing unit 116, a seat height fixing unit 24, a seat height fixing pin 23, a leg pad 64, a seat base 21, an arm starting region fixing unit 45 on the arm, an arm connector 33 for connecting the arm to the frame, an arm axis height fixing unit 115, a set of weight stack 71, are attached.

FIG. 11 describes a state in which a seat handle 12, a handle 114, a frame 10, a seat 20, an arm 32, an arm length fixing unit 52, an arm angle fixing unit 116, a seat height fixing unit 24, a cross strut of the frame 14, a handle 114, a seat height fixing pin 23, a seat base 21, a leg pad 64, an arm starting region fixing unit 45, an arm connector 33 for connecting the arm to the frame, an arm axis height fixing unit 115, a set of weight stack 71, are attached according to an embodiment of the present invention and describes a state in which the seat angle fixing unit for adjusting the angle between the seat and the leg pad is attached to be perpendicular, so that, it enables the user to induct the user's right leg.

FIG. 12 describes a state in which a seat handle 12, a handle 114, a frame 10, a seat 20, an arm 32, an arm length fixing unit 52, an arm angle fixing unit 116, a seat height fixing unit 24, a cross strut of the frame 14, a leg pad 64, a handle 114, a seat height fixing pin 23, a seat base 21, an arm starting region fixing unit 45, an arm connector 33 for connecting the arm to the frame, an arm axis height fixing unit 115, a set of weight stack 71, are attached according to an embodiment of the present invention and describes a state in which the seat angle fixing unit for adjusting the angle between the seat and the leg pad is attached to be parallel to each other, so that, it enables the user to lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90 degrees; or abduct the user's right leg.

FIG. 13 describes a state in which a handle 114, a frame 10, a seat 20, a seat height fixing unit 24, a handle 114, a leg pad 64an arm starting region fixing unit 45, a set of weight stack 71, a moving mechanism 9 as a seat location fixing unit provided on the frame for moving the seat vertically c/d when seen above, a moving mechanism 8 for moving the seat laterally a/b is attached and shows a state to which a moving mechanism is attached according to an embodiment of the present invention and configured to move the seat laterally from the original existing location of the seat so that, a seat location fixing unit adjusts the seat to be parallel to the leg pad 64 and aligned to the leg pad when viewed from above, and the arm starting region fixing unit enable the user to lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90; or sit on the seat with both of the user's hip and thigh and perform leg extension exercises; or sit on the seat with both of the user's hip and thigh and perform leg curl exercises; or place left hip and thigh of the user on the seat and perform abduction exercise with the right leg of the user; or lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90 degrees.

FIG. 14 describes a state in which a handle 114, a frame 10, a seat 20, a seat height fixing unit 24, a handle 114, a leg pad 64, an arm starting region fixing unit 45, an arm axis 44, a set of weight stack 71, a moving mechanism 9 as a seat location fixing unit for moving the seat vertically c/d when seen above, a moving mechanism 8 for moving the seat laterally a/b are attached according to an embodiment of the present invention and shows a state to which a moving mechanism is attached and configured to move the seat vertically from the original existing location of the seat so that, a seat location fixing unit adjusts the seat to be parallel and aligned to the leg pad when viewed from above, and the arm starting region fixing unit enable the user to place a right hip and right thigh of the user on the seat, place the user's left leg on the leg pad, and move the left leg of the user backward from an exercise starting position where the leg is pulled toward the user's chest such that the user's leg moves during exercises and the user flexes the hip while exercising.

FIG. 15 describes a state in which a handle 114, a frame 10, a seat 20, a handle 114, a leg pad 64, a set of weight stack 71, a moving mechanism 91 as an arm axis location fixing unit provided on the frame for moving the seat vertically c/d when seen above, a moving mechanism 81 for moving the seat laterally a/b are attached and shows a state to which a moving mechanism are attached according to an embodiment of the present invention and configured to move the arm fixing unit vertically from the original existing location of the arm so that, an arm location fixing unit adjusts the range of motion of the leg pad to be separated with the seat when viewed from a sagittal plane, and the arm starting region fixing unit and the arm location fixing unit enable the user to place a right hip and right thigh of the user on the seat, place the user's left leg on the leg pad, and move the left leg of the user backward from an exercise starting position where the leg is pulled toward the user's chest such that the user's leg moves during exercises and the user flexes the hip while exercising.

FIG. 16, describes a state in which a seat for the right hip and the right thigh of the user, 20bb for the left hip and the left thigh of the user, a seat handle 12, a handle 114, a frame 10, a seat 20, an arm 32, an arm axis 44, a seat height fixing unit 24, a cross strut of the frame 14, a leg pad 64, a handle 114, a seat height fixing pin 23, a seat casing 22, a seat base 21 for adjusting the seat height, an arm connector 33 for connecting the arm to the frame, a set of weight stack 71, a weight disk 60, a weight disk holder 59, a leg pad connector 62 for connecting the leg pad and the arm, two pads 52, a torso support 26, pad connector 51 for connecting the leg connecter and the pad 52 , and shows a state to which a two axes mechanism 44a that enable a pivot axis of the arm portion to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis are attached. It shows a state which allows the user to sit on the seat with right hip and right thigh of the user that is not exercising, locate left foot of the user on the leg pad, and move the left leg backward and spread apart from an exercise starting position where the left leg is pulled toward the user's chest and put together when viewed from above.

FIG. 17, describes a state in which a seat for the right hip and the right thigh of the user, 20bb for the left hip and the left thigh of the user and the 20ba and 20bb can be used to support the back of the user when the user is in a lying position, a seat handle 12, a handle 114, a frame 10, a seat 20, an arm 32, an arm axis 44, a leg pad 64, a handle 114, two pads 52, a weight disk 60, a weight disk holder 59, are attached according to an embodiment of the present invention and shows a state to which a two axes mechanism 44a that enable a pivot axis of the arm portion to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that it allows the user to lie on the seat with left hip and left thigh of the user that is not exercising, locate right thigh of the user on the leg pad, and move the right leg backward and spread apart from an exercise starting position where the right leg is pulled toward the user's chest and put together.

FIG. 18 describes partial view illustrating a two axes mechanism 44a of FIG. 17 which is provided on the arm 32 and the arm is rotatable about both the x-axis (parallel to the ground) and the y-axis (perpendicular to the ground) according to the present disclosure. It describes a state in which the roller base 77 (referred to as 'first roller base 77') configured to support rotation of the roller 48 (referred to as 'first roller 48') about an x-axis parallel to the ground includes a second roller 111 perpendicularly intersecting the first roller base 77 and configured to rotate about a second arm pivot axis 113 parallel to a y-axis perpendicular to the ground, a second bearing 112 configured to support rotation of the second roller 111, a bearing 94 having a horizontal cylindrical shape and located on a central portion of a side surface of the pivot axis 44 of the arm portion, are attached according to an embodiment of the present invention.

FIG. 19 shows an exploded perspective view of the two axis mechanism 44a of FIG. 18 and describes a state in which the roller base 77 (referred to as 'first roller base 77') configured to support rotation of the roller 48 (referred to as 'first roller 48') about an x-axis parallel to the ground includes a second roller 111 perpendicularly intersecting the first roller base 77 and configured to rotate about a second arm pivot axis 113 parallel to a y-axis perpendicular to the ground, a second bearing 112 configured to support rotation of the second roller 111, and a second roller base 110 provided on an end of the first roller base 77, a bearing 94 having a horizontal cylindrical shape and located on a central portion of a side surface of the pivot axis 44 of the arm portion, and configured to support rotation of the second roller 111 are attached according to an embodiment of the present invention.

The exercise device according to an embodiment of the present invention preferably includes: an arm 32 pivotably connected to the frame 10 and rotatable wherein the arm comprises an arm pivot axis 44 aligned with a user's hip joint; a leg pad 64 pivotably connected to a lower end of the arm and configured to contact the user's leg during use, a handle connected to a lower end of the seat or to the frame and extending therefrom 114; an arm starting region fixing unit 45 which is provided to fix an exercise starting section; an arm length fixing unit 52 for adjusting the length of the arm; a seat 20 which is configured in correspondence to a hip and a thigh of a leg of two legs of a user so as to support the hip and the thigh of the leg that is not exercising and not to support the hip nor the thigh of the other leg of the user, and thus the seat 20 is separated from the leg pad 64 when viewed from above 20b. In addition, as shown in FIGS. 3 through 17, the arm may comprise a pivot axis on rear end of the seat, aligned with a user's hip joint, within a radius of 20 cm from the user's pelvis when viewed in a sagittal plane.

The device is configured to enable the exercising leg of the user to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat 20 and the exercising leg is placed on the leg pad 64 and pulled to the chest of the user. Preferably, a leg pad may be configured to contact the user's thigh during use to protect the user's knee and ankle joints while exercising the thigh and gluteal muscles. In addition, a torso support 26 may be located in front of or behind the seat and a torso support angle adjustment may be configured to support the user in lying position. Also, as shown in FIGS. 16, 17, a seat 20 (20ba or 20bb) can be used to support the back of the user when the user is in a lying position and a seat handle 12 may be provided as shown in FIGS. 7, 9,16.

Selectively, as shown in FIGS. 16, 17, a seat for the right hip and the right thigh of the user 20ba and a seat for the left hip and the left thigh of the user 20bb can be provided and the 20ba and 20bb can be used to support the back of the user when the user is in a lying position.

In addition, an arm starting region fixing unit 45 can be provided on the arm to fix an exercise starting section to the left when a user exercises the left leg and fix the exercise starting section to the right when the user exercises the right leg, and thus the user may adjust the exercise starting section according to his/her purpose.

An exercise device according to an embodiment of the present invention may further include a seat angle fixing unit 116 for adjusting the angle between the seat 20 and the leg pad 64, so that, when the seat angle fixing unit 116 adjusts the leg pad 64 and the seat 20 to be parallel to each other when viewed from above 20a, as shown in

FIS

10, 11, the seat angle fixing unit 116 enables moving legs of a user to abduct, adduce, or gather and spread while the user is seating, or lying down on the seat 20 and placing a thigh and a hip of a leg of two legs of the user on the leg pad 64. Also, when the seat angle fixing unit 116 adjusts the leg pad 64 and the seat 20 to be perpendicular to each other when viewed from above 20b, as shown in FIG. 5, 7, 8, 9, the seat angle fixing unit 116 enables the user to place a leg of two legs of the user on the leg pad 64 and lower the leg and kick back from a starting pose at which the thighs are pulled toward the chest of the user, while the thigh and the hip of the other leg of the user are on the seat 20.

The seat angle fixing unit 116 may include a fixing screw 35, a roller provided at one end of the seat strut of the frame 13 which is connected to the seat 20, a roller base 34 connected to a cross strut of the frame 14. When a user tries to extend and lower the right leg and kick down, as shown in FIG. 7, 8, 9, the roller is rotated to place the seat 20 in correspondence to the left thigh and left hip of the user and the seat 20 is fixed by using the fixing screw, such that the user may lower the right leg and kick back from a starting pose at which the user places the left leg on the seat and pulls the right leg toward the chest while seating, or lying down on his/her back.

In addition, as shown in FIG. 12, when the arm starting region fixing unit 45 fix the arm relatively low, and the seat angle fixing unit 116 adjusted the seat 20 and the leg pad 64 to be parallel to each other when viewed from above 20a, while a user is lying down on his/her back placed on the seat 20, the user may additionally perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad 64 above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90 degrees (hip bridge exercise).

Also, as shown in FIG 9, a seat height adjusting unit 24 provided on the frame, an arm length fixing unit 52, an arm axis height adjusting unit 115 may be provided on the frame to adjust the height of the seat or the height of the arm axis relatively low, such that, they make it convenient for the user to lie down on his/her back placed on the seat 20, perform a motion for stretching his/her back straight from a starting pose at which the user places leg pad 64 above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90 degrees.

Meanwhile, when the arm starting region fixing unit 45 fix the arm to be relatively low, and the seat angle fixing unit 116 adjusted the seat 20 and the leg pad 64 to be parallel to each other when viewed from above, as shown in FIG. 12, the user may additionally perform a motion for stretching his/her knees straight from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 above the lower legs, bends his/her knees, and stretch his/her knees (leg extension exercise). Also, when the arm starting region fixing unit 45 fix the arm parallel to the ground, and the seat angle fixing unit 116 adjusted the seat 20 and the leg pad 64 to be parallel to each other when viewed from above, as shown in FIG. 12, the user may additionally perform a motion for curling his/her knees from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 under the lower legs, stretch his/her knees, and curl his/her knees (leg curl exercise).

Selectively, as shown in FIG 8, a seat angle fixing unit 116 maybe provided to adjust the angle between the seat 20 and the frame 10 on the user's purpose.

An exercise device according to an embodiment of the present invention may further include a seat location fixing unit for adjusting the location of the seat. The seat location fixing unit may comprise a moving mechanism 8/9, the moving mechanism 9 move the seat vertically c from the original existing location of the seat so that, when the seat location fixing unit adjusts the seat 20 to be aligned to the leg pad 64 when viewed from above 20a, as shown in FIG. 13, the moving mechanism and the arm starting region fixing unit 45 enable the user to lie down on his/her back placed on the seat, perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90; additionally perform a motion for stretching his/her knees straight from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 above the lower legs, bends his/her knees, and stretch his/her knees; also, the user may additionally perform a motion for curling his/her knees from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 under the lower legs, stretch his/her knees and curl his/her knees.

The moving mechanism 9 may also move the seat vertically d to the space of the original existing location of the seat so that, the seat location fixing unit adjusts the seat to be separated from the leg pad 64 when viewed from above, the seat angle fixing unit and the arm starting region fixing unit enable the user's exercising leg to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat and the exercising leg is placed on the leg pad and pulled to the chest of the user.

The seat location fixing unit may also include a moving mechanism 8 that may move the seat laterally b from the original existing location of the seat so that, as shown in FIG. 13, the moving mechanism 8 and a pivoting of an x-axis arm starting region fixing unit(or x-axis fixing unit) 45 make it convenient for the user to lie down on his/her back placed on the seat, and perform a motion for stretching his/her back straight from a starting pose at which the user places the leg pad above the pelvis, bends his/her knees to put feet on the ground, and bend his/her back to 90; additionally perform a motion for stretching his/her knees straight from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 above the lower legs, bends his/her knees, and stretch his/her knees; also, perform a motion for curling his/her knees from a starting pose at which the user places both of the user's leg on the seat 20 and put the leg pad 64 under the lower legs, stretch his/her knees, and curl his/her knees.

In addition, a leg pad connector 62 may be provided to connect the leg pad and the arm 32. Also, as shown in FIGS 16, 17, the arm may be provided with a pad or two pads or "H" shaped pad to contact the thigh of the user when the user abduct, adduce, or gather and spread while the user is seating, or lying down on the seat 20 and placing the thigh and the hip of the leg of two legs of the user on the leg pad 64.

As shown in FIGS. 16, 11, 12, the seat 20 may further include pads on both side surfaces of the seat in correspondence to both sides of thighs of a user. As shown in FIG. 11, when the user tries to adduce or gather the left leg, the user uses a pad provided on the left side of the seat in correspondence to the thigh of the user. When the user tries to abduct or spread the left leg, the user uses a pad provided on the right side of the seat in correspondence to the thigh of the user.

As shown in FIG. 11, when the user tries to adduce or gather the right leg, the user uses a pad provided on the left side of the seat in correspondence to the thigh of the user. When the user tries to abduct or gather the right leg, the user uses a pad provided on the left side of the seat in correspondence to the thigh of the user. Also, as shown in FIG 12, pads at both sides of the seat in correspondence to both sides of a user's thighs maybe foldably arranged.

Selectively, the frame may include a cross strut 14, a seat strut 13, a handle strut 10a, an arm strut 10b, and a resistive force strut 10c. So the arm 32 may be connected to the handle strut of the frame (FIGS. 8, 9, 11, 12), the seat strut of the frame (FIGS 4, 5, 6, 7, 16), the resistive force strut of the frame (FIGS. 3), or the arm strut of the frame (FIGS. 13, 14, 15, 17).

Selectively, the exercise device according to an embodiment of the present disclosure may include a two axes mechanism 44a provided on the frame, that enable a pivot axis of the arm portion to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis, so that, the two axes mechanism 44a provided on the frame allow the user to sit or lie on the seat with a hip and a thigh of two legs of the user, locate the other leg of the two legs of the user on the leg pad, and move the leg which is on the leg pad backward and rotate the leg rightward or vice versa; or spread the leg apart or put together, from an exercise starting position where the exercising leg is pulled toward the user's chest and put together or spread apart while the other leg of the user is on the seat.

The exercise device according to an embodiment of the present disclosure may include a resistive force generator configured to generate a resistive force when the arm portion 32 pivots and a connector may be configured to connect the resistive force generator to the frame 10. For example, as shown in FIGS. 7, 8, and 11 through 16, the resistive force generator may include the load block 71. In order to generate resistance against rotation of the arm portion, the load block 71 is connected to the arm connector 33, which includes a rotation roller that rotates around the rotation shaft 44 and a roller base supporting and surrounding the roller, via a wire. Also, as shown in FIGS. 16, the resistive force generator may include the weight disk 60 or an elastic band 75 (FIG. 5). In addition, a two axes mechanism 44a that enable a pivot axis of the arm portion to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground may comprise two resistive force generator configured to generate the resistive force against each pivoting axes of the arm. As shown in FIGS. 17, 18, and 19, the frame may comprise an arm strut and a seat strut. wherein the arm strut and the seat strut can be separated by the user; wherein the arm strut may comprise a seat strut attachment unit z for attaching the seat strut to the arm strut or separating the seat strut from the arm strut on the user's purpose.

FIG. 20, 21, and 22 show the exercise device according to an embodiment of the present disclosure in which the arm strut 10b and the seat strut 13 can be separated by the user and it also shows a seat strut attachment unit for attaching the seat strut to the arm strut or separating the seat strut from the arm strut on the user's purpose.

FIGS. 20, 21, 22 further show the exercise device according to an embodiment of the present disclosure further comprising a seat location fixing unit 13b on the seat strut 13, for adjusting the location of the seat; wherein the seat strut 13 comprising a seat location fixing rod 13a.

The seat location fixing unit 13b may compose several holes 89(8v9c, 8b9d, 8a9c, 8a9d) for the user to choose to adjust(put) the said seat location fixing rod 13a. The seat location fixing rod may comprise a socket 89a.

FIGS. 16 and 17 show the exercise device according to an embodiment of the present disclosure wherein the two axes mechanism is connected to the seat. However FIGS. 22, 23, 24, 25, and 26 show the exercise device according to an embodiment of the present disclosure in which the frame comprises an arm strut and a seat strut; wherein the two axes mechanism is on the arm strut;

FIGS. 22, 23, 24, 25, and 26 further illustrates, two resistive force generator connected to the frame, configured to generated the resistive force against each pivoting of the arm portion that rotates when the leg pad moves.

They further illustrate a weight sytack 71; a wire connected to the weight stack 230; a wire connected to the the y-axis mechanism 110; a wire connected to the x-axis mechanism 120; a weight stack 71 which can be connected to the wire of the x-axis mechanism or the wire of the y-axis mechanism; a wire and the y-axis mechanism attachment unit 900 and a wire and the x-axis mechanism attachment unit 130 for the user to separate or attach the wire to the weight stack by the user's purpose. They also illustrate a y-axis fixing unit (or arm starting region fixing unit) 800 connected to the arm for fixing the pivoting of the y-axis of the arm; a x-axis fixing unit (or arm starting region fixing unit) 45 connected to the arm for fixing the pivoting of the x-axis mechanism. 210 is a y-axis fixing unit for attaching the wire to the y-axis mechanism. 140 is a resistce connector for connecting the resistance to the x-axis mechanism. 130 is a connector for connecting the wire and the resistance connector 140.

FIGS. 22, 23, 24, 25, and 26 further illustrates, a y-axis wire fixing unit 1000 for attaching the wire to the frame 10. The wire can preparably be elastic or elastic band. 160 is an connector for connecting a upper part of the weight stack to a upper part of the frame 10. 200 is an connector for connecting a lower part of the weight stack to a lower part of the frame 10.

Claims

A device for exercising upper leg portions and hips while protecting knee and ankle joints, the exercise device comprising:

a frame;

a seat connected to the frame and configured to support a user in a sitting or lying position;

an arm pivotably connected to the frame and rotatable;

a leg pad pivotably connected to a lower end of the arm and configured to contact the back or the bottom of the user's leg during use;

a handle connected to a lower end of the seat or to the frame and extending therefrom;

wherein the seat is configured in correspondence to a hip and a thigh of a leg of two legs of the user so as to support the thigh and the hip that are not exercising and not to support the other thigh nor the other hip of the user, and thus the seat is separated from the leg pad when viewed from above, and the seat is configured not to press the leg nor the hip of the leg that is exercising when the user performs a motion for moving the exercising leg to the back of the user from a starting pose at which the thigh and the hip of the leg that is not exercising are placed on the seat and the other leg of the user is placed on the leg pad, and the user is capable of moving his/her exercising leg to the back of the user from a starting pose at which the user places the exercising leg on the leg pad and pulls the thigh toward the chest while the thigh and hip of the other leg are on the seat, and the exercise device allows the user to lower his/her exercising leg and kick back to exercise the thigh and gluteal muscles while protecting knee and ankle joints of the leg that are not exercising;

wherein a movement occurs due to pivoting of the arm, instead of the seat.
The exercise device of claim 1, wherein the leg pad is configured to contact the back of the user's thigh during use.
The exercise device of claim 1, further comprising a torso support located in front of or behind the seat.
The exercise device of claim 1, further comprising an arm starting region fixing unit on the arm, which is provided to fix an exercise starting section.
The exercise device of claim 1, wherein the arm comprises an arm strut and a seat strut; wherein the arm strut and the seat strut can be separated or attached by the user with the seat strut attachment unit.
The exercise device of claim 1, wherein the frame comprises an arm strut and a seat strut; a seat location fixing unit on the seat strut, for adjusting the location of the seat.
The exercise device of claim 6, wherein the seat location fixing unit comprises a seat strut attachment unit for attaching the seat strut to the arm strut or separating the seat strut from the arm strut on the user's purpose.
The exercise device of claim 1, wherein the frame comprises an arm strut and a seat strut; wherein the arm is pivotally attached to the arm strut.
The exercise device of claim 1, wherein the frame comprises an arm strut and a seat strut; wherein the arm is pivotally attached to the seat strut.
The exercise device of claim 1, wherein the arm comprises an arm pivot axis aligned with the user's hip joint.
The exercise device of claim 1, further comprising an arm axis height adjusting unit on the frame, for adjusting the height of the arm axis.
The exercise device of claim 1, wherein the frame comprises an arm strut and a seat strut; a seat location fixing unit on the seat strut for adjusting the location of the seat;

wherein the seat strut is composed of a seat location fixing rod and a seat location fixing place;

wherein the seat location fixing place composes several holes for the user to choose to adjust(put) the said seat location fixing rod according to the his/her purpose.
The exercise device of claim 1, wherein the frame comprises an arm strut and a seat strut; a seat location fixing unit on the arm strut for adjusting the location of the axis;

wherein the seat location fixing unit comprises an arm location fixing rod and an arm location fixing place;

wherein the seat location fixing place composes several holes for the user to choose to put the said seat location fixing rod according to the his/her purpose.
The exercise device of claim 1,

further comprising a two axes mechanism connected to the arm and the frame;

wherein the two axes mechanism enables a pivot axis of the arm to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis.

wherein the two axes mechanism is configured to allow the user to sit or lie on the seat with the hip and the thigh of the leg that is not exercising, locate the other hip and the other thigh of the two legs of the user that is exercising on the leg pad, and move the exercising leg backward from an exercise starting position where the leg is pulled toward the user's chest; spread the exercising leg apart or put the leg together with the exercising leg.
The exercise device of claim 14, wherein the two axes mechanism is connected to the seat;

wherein the two axes mechanism enables a pivot axis of the arm to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis.

wherein the two axes mechanism is configured to allow the user to sit or lie on the seat with the hip and the thigh of the leg that is not exercising, locate the other hip and the other thigh of the two legs of the user that is exercising on the leg pad, and move the exercising leg backward from an exercise starting position where the leg is pulled toward the user's chest; spread the exercising leg apart or put the leg together with the exercising leg.
The exercise device of claim 14, wherein the frame comprises an arm strut and a seat strut;

wherein the two axes mechanism on the arm strut;

wherein the two axes mechanism enables a pivot axis of the arm to be rotatable about both a y-axis perpendicular to the ground and an x-axis parallel to the ground so that the user performs a rotation activity about both the x-axis and the y-axis.

wherein the two axes mechanism is configured to allow the user to sit or lie on the seat with the hip and the thigh of the leg that is not exercising, locate the other hip and the other thigh of the two legs of the user that is exercising on the leg pad, and move the exercising leg backward from an exercise starting position where the leg is pulled toward the user's chest; spread the exercising leg apart or put the leg together with the exercising leg.
The exercise device of claim 2, further comprising a pedal; a leg pad connector having a first end connected to the leg pad and a second end connected to the pedal.
The exercise device of claim 14, further comprising, two resistive force generator connected to the frame, configured to generated the resistive force against each pivoting of the arm portion that rotates when the leg pad moves.
The exercise device of claim 14, further comprising a wire connected to the a y-axis perpendicular to the ground and a wire connected to an x-axis parallel to the ground;

a weight stack connected to the wire which is connected to a x-axis perpendicular to the ground.
The exercise device of claim 14, further comprising a wire connected to the a y-axis perpendicular to the ground and a wire connected to an x-axis parallel to the ground;

a weight stack connected to the wire which is connected to a y-axis perpendicular to the ground.
The exercise device of claim 19, further comprising a wire attachment unit for the user to separate or attach the wire to the weight stack by the user's purpose.
The exercise device of claim 20, further comprising a wire attachment unit for the user to separate or attach the wire to the weight stack by the user's purpose.
The exercise device of claim 15, further comprising a a y-axis fixing unit connected to the arm for fixing the pivoting of the y-axis of the arm.
The exercise device of claim 16, further comprising a y-axis fixing unit connected to the arm for fixing the pivoting of the x-axis of the arm.