WO2005074800A1 - 脚力測定装置 - Google Patents
脚力測定装置 Download PDFInfo
- Publication number
- WO2005074800A1 WO2005074800A1 PCT/JP2005/001897 JP2005001897W WO2005074800A1 WO 2005074800 A1 WO2005074800 A1 WO 2005074800A1 JP 2005001897 W JP2005001897 W JP 2005001897W WO 2005074800 A1 WO2005074800 A1 WO 2005074800A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- leg
- measuring device
- foot plate
- leg strength
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/18—Training appliances or apparatus for special sports for skiing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/50—Force related parameters
- A63B2220/51—Force
Definitions
- the present invention relates to a leg strength measuring device.
- Patent Document 1 discloses a leg strength measurement device.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-65652
- the leg force measurement device has a configuration including a seat, a foot plate provided on the front side of the seat, and a load sensor for measuring a load applied to the foot plate. Then, the person to be measured for leg strength can measure the leg strength of the person to be measured by stepping on the foot plate while sitting on the seat and measuring the stepping force with a load sensor.
- leg strength necessary for skiing and snowboarding is leg strength accompanying an operation of putting a knee from an upright posture (an operation of bending and stretching the knee).
- the measurement is performed in a state where the person to be measured is sitting on a seat, and the measurement is performed in a posture completely different from the posture when actually skiing and snowboarding. is there. Therefore, the conventional leg strength measuring device cannot accurately measure the leg strength when skiing or snowboarding. Therefore, the leg strength measured by the conventional leg strength measuring device cannot be an accurate reference for selecting skis, snowboards, ski boots, snowboard shoes, and the like! / ⁇
- an object of the present invention is to provide a distribution of load points that can be an appropriate reference for selecting a ski, a snowboard, a ski boot, a snowboard boot, and the like.
- leg force measuring device capable of measuring leg force.
- the leg strength measuring device according to claim 1, wherein the leg strength subject is individually stepped on the left and right feet by two foot plates, and a load sensor that detects a load applied to each foot plate at at least three points. It is characterized by having the following.
- the leg strength measuring device includes two foot plates that a leg strength measurer steps on individually with left and right feet, and a load sensor that detects a vertical load and a moment applied to each foot plate. It is characterized by the following.
- the invention according to claim 3 is the leg strength measuring device according to claim 1, wherein the leg force measurer detects a maximum force detected by the load sensor when the leg strength measurer performs a bending and stretching exercise on the foot plate.
- Load force A leg force calculating means for calculating the leg force of the leg force measurer by subtracting the weight of the leg force measurer is provided.
- storage means for storing the maximum load and the weight of the person measuring the leg strength based on the output of the load sensor is omitted. It is characterized by the following.
- the invention according to claim 5 is the leg strength measuring device according to claim 1, further comprising a width adjusting unit that adjusts a separation width between the two foot plates.
- the invention according to claim 6 is the leg strength measuring device according to claim 1, wherein a handrail is not provided.
- the invention according to claim 7 is the leg strength measuring device according to claim 6, wherein the handrail moves together with the foot plate.
- the invention according to claim 8 is the leg strength measuring device according to claim 1, wherein the foot plate includes a shoe mounting portion for mounting ski boots or snowboard shoes. is there.
- the load sensor is capable of continuously detecting a plurality of instantaneous values during the bending and stretching movement. It is a thing.
- the invention according to claim 10 is the leg strength measuring device according to claim 1, further comprising an analyzing means for analyzing a plane distribution of the load based on an output value of the load sensor. Things.
- the invention according to claim 11 is the leg strength measuring device according to claim 1, wherein the foot plate is shaped so that the ski or snowboard can be placed thereon.
- a twelfth aspect of the present invention is the leg strength measuring device according to the first aspect, wherein the foot plate is formed of a hard member that is difficult to deform.
- the invention according to claim 13 is the leg strength measuring device according to claim 1, wherein the foot plate can be fixed in a state of being inclined in the front-rear direction or the lateral direction.
- two foot plates for the left and right legs are provided, and the load applied to each foot plate is measured at at least three points. Based on the measured values, it is possible to analyze the weight of the subject and the state of the plane distribution of the load when the knee is flexed and extended.
- the weight distribution of the subject and the plane distribution of the load when the knee is flexed and stretched are analyzed simply by providing one load sensor for each foot plate. be able to.
- the leg force of the subject can be obtained by subtracting the load force and weight when the subject flexes and extends the knee.
- the maximum load and the leg strength of the subject when the subject flexes the knee can be obtained based on the measured values stored in the storage means. it can.
- the separation width between the two foot plates can be adjusted to a width suitable for the subject at any time.
- the handrail is provided, so that the subject can be secured.
- the subject can be placed on the foot plate while being held by the handrail.
- the ski shoes or snowboard shoes are put on and the foot is worn. On the plate.
- the subject can be put on the foot plate with the ski or snowboard mounted.
- the foot plate is not easily deformed, so that the load applied to the foot plate can be efficiently transmitted to the load sensor.
- the subject's leg strength and the like can be obtained in such a manner that the subject approaches the state of actually performing S-skiing and snowboarding. Can be measured.
- the leg strength measuring device 1 includes a measuring unit 2 and a personal computer (hereinafter, referred to as a PC) 3.
- the measuring unit 2 is a device that measures a load such as a weight of the subject.
- the PC 3 receives the measured value measured by the measuring unit 2 and executes a process of calculating a leg force and a load plane distribution of the subject.
- the measurement section 2 includes a base 4 and two foot plates 5 and 6 provided on the base 4 in parallel with each other. The foot plates 5 and 6 are provided separately so that the person to be leg strength can step on the left and right legs individually.
- Three load sensors (load cells) 7, 8, and 9 are arranged between one foot plate 5 and the base 4.
- each of the load sensors 7 to 12 detects a vertical load applied to each of the foot plates 5 and 6.
- the vertical load means a vertical load applied to each of the foot plates 5 and 6.
- the base 4 can be formed into a desired shape as long as the base 4 can support the foot plates 5 and 6.
- the four supports 13, 14, 15 and 16 are assembled into a square. It can be formed by attaching the auxiliary body 17 in parallel with the support 15 while being formed in a rectangular frame shape.
- casters 18 are provided at the four corners of the base 4 to be movable and movable. Can be formed to be positionable.
- the foot plates 5, 6 can be formed in a narrow and long shape.
- the two foot plates 5 and 6 are formed of hard members made of a material such as a bend or a radius that is hardly deformed so that the load applied to the foot plates 5 and 6 can be efficiently transmitted to the load sensors 7 to 12. It is preferred that this be done.
- a sensor mounting portion 19 wider than the foot plate 5 is fixed to the back surface of the one end of the foot plate 5 in the longitudinal direction.
- the load sensors 7 and 8 are provided on the back surface of the sensor mounting portion 19.
- the load sensor 9 is provided on the rear surface of the rear end of the foot plate 5.
- a sensor mounting portion 20 having a width wider than that of the foot plate 6 is fixed to a back surface of a distal end portion of the other foot plate 5 in the longitudinal direction.
- the load sensors 10 and 11 are provided on the back surface of the sensor mounting portion 20.
- the load sensor 12 is provided on the rear surface of the rear end of the foot plate 6.
- the sensor mounting portion 19 and the three load sensors 7 to 9 are attached to the one foot plate 5, whereby one foot plate unit 21 is configured.
- the other foot plate unit 22 is formed by assembling the sensor mounting portion 20 and the three load sensors 10 to 12 to the other foot plate 6.
- the load sensor 9 is located on the axis L1 of one foot plate 5, and the load sensors 7, 8 together with the load sensor 9 form an isosceles triangle. It is placed at the position.
- the load sensor 12 is located on the axis L2 of the other foot plate 6, and the load sensors 10, 11 are arranged at positions forming an isosceles triangle together with the load sensor 12.
- the one foot plate unit 21 configured as described above is provided between the support 13 and the auxiliary 17.
- the two load sensors 7, 8 of the foot plate unit 21 are sandwiched between the sensor mounting portion 19 and the auxiliary body 17, and the load sensor 7 is sandwiched between the foot plate 5 and the support body 13.
- the foot plate unit 21 is fixed to the auxiliary body 17 and the support body 13.
- the other foot plate unit 22 can be provided movably along the support 13 and the support 15 while being bridged between the support 13 and the support 15.
- the moving bodies 23 and 24 are mounted on the supports 13 and 15 so as to be movable with respect to the two supports 13 and 15, and the front end and the rear end of the other foot plate unit 22 are connected to these two supports 13 and 15.
- the other foot plate unit 22 comes close to and close to the one foot plate unit 21 along the longitudinal direction of the two supports 13 and 15. The distance between the two foot plate units 21 and 22 can be adjusted arbitrarily.
- the moving bodies 23 and 24 can be formed, for example, in a C-shaped cross section.
- the movable body 23 can be mounted on the support 15 so as to cover the support 23 on the opening 23a side.
- the moving body 24 can be mounted on the support 13 so as to cover the support 13 from the opening 24a side. In this way, the moving bodies 23 and 24 mounted on the two supports 13 and 15 can move along the longitudinal direction of the supports 13 and 15.
- the distal end of the other foot plate unit 22 is attached to the moving body 23 so that the two load sensors 10 and 11 are sandwiched between the sensor mounting portion 20 and the moving body 23, and the other foot plate unit
- the rear end side of 22 is attached to the moving body 24 so that the load sensor 12 is sandwiched between the foot plate 6 and the moving body 24.
- the moving bodies 23, 24 and the screws 25, 26, 27 constitute a width adjusting means T for adjusting the separation width between the foot plates 5, 6.
- All the load sensors 7 to 12 provided in the two foot plate units 21 and 22 are set to measure the load applied to the foot plates 5 and 6 at the same sampling interval. .
- the other handrail 30 is connected to the other foot plate unit. It can move together with 22 and moving bodies 23 and 24.
- the handrails 29 and 30 are provided with grip portions made of rubber or the like, so that they can be easily gripped.
- an opening / closing portion 29a is provided in a part of the handrail 29 on the fixed side so that the person to be measured can pass therethrough, and by providing a stair S, the force of the object It may be easy to put on the foot plates 5 and 6.
- the PC 3 includes a keyboard as input means 31, a display as display means 32, a CPU 33, a RAM as storage means 34, a ROM 35, and a leg strength calculation means. 36 and load distribution analysis means 37.
- the input unit 31 is a device for inputting items such as a name of the subject.
- the input means 31 is specifically formed by, for example, a touch panel or a keyboard, and as shown in FIG. 4, various information regarding the subject such as a name, an address, a date of birth, etc. is input. .
- the storage unit 34 is a device that stores a series of measured values measured by the load sensors 7 to 12. That is, if the subject performs the bending and stretching motion twice on the foot plates 5 and 6, the measured value measured by the measuring unit 2 changes as shown in FIG. Stores the series of measured values.
- the leg force calculating means 36 calculates the leg force of the subject, as shown in FIG. 5, and subtracts the weight of the subject from the load when the subject is bent or stretched, that is, the maximum load. Is used to calculate the leg strength of the subject. In the case shown in Fig. 5, since the maximum load is 220 kgf and the weight is 75 kgf, the subject's leg strength is 145 kgf.
- the load distribution analysis means 37 analyzes the state of the center of gravity distribution of the load based on the measurement values stored in the storage means 34, that is, the measurement values measured by the load sensors 7 to 12. Things.
- FIG. 6 shows an example of the state of the center of gravity distribution of the load obtained by the load distribution analysis means 37.
- each point indicates the position of the center of gravity of the load at each moment. That is, FIG. 6 shows the position of the center of gravity of the load at a predetermined sampling interval during a predetermined time, and the result is shown by a plurality of points.
- the center of gravity of the load A method for obtaining the state of the cloth will be described.
- the X-coordinate (XG) of the center of gravity of the load at each moment is obtained by Equation 1
- the Y-coordinate (YG) is obtained by Equation 2.
- the total load F can be obtained by Equation 3.
- fl is the measured value of the load sensor 7 or 10
- f2 is the measured value of the load sensor 8 or 11
- f3 is the measured value of the load sensor 9 or 12.
- the Y axis is set along the axis L1 of the foot plate 5 or the axis L2 of the foot plate 6, and the X axis passes through the center ⁇ of the foot plate 5 or 6, and Are set to be orthogonal to.
- Equation 4 The linear approximation is shown by Equation 4.
- n indicates the number of data.
- the display means 32 displays the name, weight, leg strength, maximum load, etc. of the person to be measured as shown in FIG. 7, and is also measured by load sensors 7 to 12 as shown in FIG.
- the measured values are displayed in a graph, and the distribution of the load analyzed by the load distribution analyzing means 37 is displayed as an image as shown in FIG.
- the distance between the two foot plate units 21 and 22 is substantially equal to the shoulder width of the subject by moving the one foot plate unit 21 closer to and away from the other foot plate unit 22. Tighten the screws 25, 26 and 27 with them aligned. Thereby, the position of the other foot plate unit 22 is fixed, and the interval between the two foot plate units 21 and 22 is determined.
- the subject opens the opening / closing part 29a of the handrail 29, climbs the stairs S, places one leg on one foot plate 5, and places the other leg on the other foot plate 6. Then, the leg strength measuring device 1 is operated while being placed on the two foot plates 5 and 6. Thereafter, the measurer performs bending and stretching movements a plurality of times, for example, twice. At this time, the measured values output from all the load sensors 7 to 12 are stored in the storage means 34.
- the leg strength calculating means 36 obtains the leg strength by subtracting the weight of the subject from the maximum load measured by the measuring unit 2.
- the load distribution analysis means 37 calculates the positions of the centers of gravity at each moment by calculating the equations (1), (2), and (3) based on the measurement values measured by the load sensors 7 to 12. Further, by continuously measuring the position of the center of gravity a plurality of times at a predetermined sampling interval, the state of the movement of the center of gravity is obtained as shown in FIG.
- the display means 32 displays the name, gender, weight, leg strength, maximum load, and the like of the subject as shown in FIG. 8, and displays a series of data measured by the measurement unit 2 as shown in FIG. The measured values are displayed in a graph, and, as shown in Fig. 6, at each moment analyzed by the load distribution analysis means 37. The center position of the applied load is indicated by a point.
- the subject receives the advice of a salesclerk of a ski boot or snowboard shoe store while visually checking the center of gravity of the load of the subject displayed on the display means 32. That is, when skiing or snowboarding, it is preferable that the center of gravity of the weight of the skier or snowboarder be concentrated in the narrow range A on the thumb side of the leg K, as shown in FIG. Therefore, the subject can be instructed to correct his / her posture so that the center of gravity of the clerk and the weight of the clerk concentrates on the narrow range A on the thumb side.
- the advanced skiers and snowboarders tend to concentrate the center of gravity on the narrow range A on the thumb side as described above, while the beginners tend to concentrate on the center of gravity of the weight. Locations tend to be spread out over a wide area. Therefore, it can be used as a reference for selecting the hardness of the shell or leather of ski boots or snowboard shoes based on the degree of dispersion of the position of the center of gravity of the weight. That is, a hard shell or leather shoe can be recommended for advanced users, and a soft shell or leather shoe can be recommended for beginners.
- a mounting portion for mounting ski boots or snowboard shoes is provided on the foot plates 5 and 6, and the load is measured while the subject wears the ski boots or snowboard shoes. By doing so, it is possible to measure leg strength and the like under a more realistic condition. Further, the subject may wear the ski shoes or snowboard shoes, and further, may mount the skis or snowboard on the foot plates 5 and 6 to measure the load.
- the foot plates 5 and 6 may be provided horizontally. However, the foot plates 5 and 6 may be inclined in the front-rear direction, or the foot plates 5 and 6 may be tilted left and right around the axis LI, L2. When the subject is placed on the foot plates 5 and 6, the subject is in a so-called, toe-up, toe-down, or left-to-right twisted state. In this way, the leg strength and the center of gravity of the subject can be determined while skiing or snowboarding is actually performed.
- FIG. 9 shows a second embodiment.
- the feature of the second embodiment is that a six-axis
- the sensor 41 was used.
- one six-axis sensor 41 can measure the planar distribution of the load of the subject.
- a method of measuring the load distribution using the six-axis sensor 41 will be described. Since one 6-axis sensor 41 is installed on each of the foot plates 5 and 6, a case where one 6-axis sensor 41 is installed on any one of the foot plates 5 or 6 will be described.
- an X axis and a Y axis that are orthogonal to each other are set on the foot plate.
- the X axis or the Y axis can be set, for example, in accordance with the axis of the foot plate.
- the 6-axis sensor 41 is installed at the origin ⁇ .
- the 6-axis sensor 41 can simultaneously measure loads Fx, Fy, and Fz parallel to the X, Y, and Z axes and moments Mx, My, and Mz for the X, Y, and Z axes. is there.
- Equation 10 a case where the movement of the load point is linearly approximated by continuously measuring the center of gravity (XG, YG) of the load at predetermined intervals as described above will be described.
- the straight-line approximation can be obtained by Equation 10 based on the least square method.
- Equation 10 The slope C and intercept d of Equation 10 can be obtained by Equations 11 and 12.
- n indicates the number of data.
- ⁇ X> indicates the average X coordinate of the X coordinate of each barycentric position when a plurality of barycentric positions of the load are obtained.
- ⁇ Y> indicates the average ⁇ coordinate of the ⁇ coordinates of each center of gravity when a plurality of centers of gravity of the load are obtained.
- the type and number of load sensors are not limited to those of the embodiment as long as the plane distribution of the load applied to each of the foot plates 5 and 6 can be measured.
- two force sensors 7, 8, 10 and 11 are provided at the front end of the foot plates 5 and 6, respectively, and one load sensor 9 and 12 is provided at the rear end.
- One load sensor may be provided on the front end side of each of G and 5, and two load sensors may be provided on the rear end side.
- FIG. 1 is a perspective view of a leg strength measuring device. (First Embodiment)
- FIG. 2 is a schematic diagram showing a positional relationship of a load sensor. (First Embodiment)
- FIG. 3 is a block diagram. (First Embodiment)
- FIG. 4 is a front view of input means showing a screen for inputting information about a subject.
- FIG. 5 is a graph showing measured values. (First Embodiment)
- FIG. 6 shows a screen showing a planar distribution of loads.
- FIG. 7 is a front view of display means showing display contents. (First Embodiment)
- FIG. 8 is a view showing an ideal state of a load distribution on a sole. (First Embodiment)
- FIG. 9 is a diagram showing a method of obtaining a measured value using a six-axis sensor as a load sensor. (No. 2 embodiment) Explanation of reference numerals
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Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-033566 | 2004-02-10 | ||
JP2004033566A JP4449057B2 (ja) | 2004-02-10 | 2004-02-10 | 脚力測定装置 |
Publications (1)
Publication Number | Publication Date |
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WO2005074800A1 true WO2005074800A1 (ja) | 2005-08-18 |
Family
ID=34836134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/001897 WO2005074800A1 (ja) | 2004-02-10 | 2005-02-09 | 脚力測定装置 |
Country Status (3)
Country | Link |
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US (1) | US7442150B2 (ja) |
JP (1) | JP4449057B2 (ja) |
WO (1) | WO2005074800A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4474609B2 (ja) * | 2004-02-10 | 2010-06-09 | 株式会社ジャパーナ | スキー板又はスノーボードの判定システム |
JP4977429B2 (ja) * | 2006-10-06 | 2012-07-18 | 大和製衡株式会社 | 下肢筋力評価方法および下肢筋力評価装置 |
JP5590730B2 (ja) * | 2011-02-07 | 2014-09-17 | 株式会社タニタ | 体重計 |
CZ23050U1 (cs) | 2011-09-15 | 2011-12-12 | Kubická@Lucie | Posilovací stroj |
JP6183827B2 (ja) * | 2013-03-14 | 2017-08-23 | 株式会社タニタ | 運動機能評価装置及び運動機能評価方法 |
CN106137132B (zh) * | 2013-03-14 | 2019-05-07 | 株式会社百利达 | 运动机能评价装置及方法、运算装置及方法 |
JP6601268B2 (ja) * | 2016-03-02 | 2019-11-06 | トヨタ自動車株式会社 | 足裏荷重算出装置 |
WO2021255785A1 (ja) * | 2020-06-15 | 2021-12-23 | 日本電信電話株式会社 | 測定システム、装置、方法およびプログラム |
CN112619041B (zh) * | 2021-01-19 | 2022-03-01 | 杨洁 | 一种腿部康复训练器 |
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JP2002312371A (ja) | 2001-04-10 | 2002-10-25 | Takaharu Baba | スポーツ用品の検索方法および検索用記録媒体 |
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- 2004-02-10 JP JP2004033566A patent/JP4449057B2/ja not_active Expired - Fee Related
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2006
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JPH09224922A (ja) * | 1996-02-27 | 1997-09-02 | Nec Corp | 体感入力装置 |
JP2002048630A (ja) * | 2000-08-01 | 2002-02-15 | Minoru Yoshida | 体重バランスメータ |
JP2002136632A (ja) * | 2000-08-22 | 2002-05-14 | Matsushita Seiko Co Ltd | スタンス設定装置 |
JP2003199728A (ja) * | 2001-10-23 | 2003-07-15 | Tanita Corp | 生活障害関連身体情報判定装置 |
JP2003240630A (ja) * | 2002-02-20 | 2003-08-27 | New Opto Corp | 重心計 |
Also Published As
Publication number | Publication date |
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US20060179938A1 (en) | 2006-08-17 |
US7442150B2 (en) | 2008-10-28 |
JP2005224289A (ja) | 2005-08-25 |
JP4449057B2 (ja) | 2010-04-14 |
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