WO2005009547A1

WO2005009547A1 - Power trainer

Info

Publication number: WO2005009547A1
Application number: PCT/IB2003/004518
Authority: WO
Inventors: Hassan Meki
Original assignee: Hassan Meki
Priority date: 2003-07-31
Filing date: 2003-10-13
Publication date: 2005-02-03
Also published as: AU2003267752A1

Abstract

A power trainer with removable weights for push-ups in the sitting position includes a handlebar (9) linked in such a way to first removable weights (4) by a swivelling lever (19) and a cable link (20) with pulleys that the weights are lifted when a person grasps the handlebar (9) and bends his or her arms. Also provided is a pedal (11) linked in such a way by another cable link (20) with pulleys to second removable weights (5) that the weights are lifted when the pedal (11) is stepped upon. The first and second removable weights (4, 5) are functionally interconnected in such a way that the first removable weights (4) can be lifted only when the second removable weights (5) are lifted at the same time, while the second removable weights (5) can be lifted independently of the first removable weights (4). This allows purely mechanical power trainers to be produced with which the concentric and eccentric parts of the exercise can be performed with different, precisely defined and accurately reproducible antagonistic forces.

Description

rafttrainingsgerät

Reference to related applications This application claims priority from Swiss patent applications no. 1333/03 of July 31, 2003 and Νr. 1365/03 of August 8, 2003, the entire disclosure of which is hereby incorporated by reference. TECHNICAL FIELD The invention relates to a strength training device for exercising certain muscles or muscle groups of a person according to the preamble of claim 1.

PRIOR ART It has long been known in training theory that a muscle can develop more force when giving in against a counterforce (eg lowering loads) than when overcoming a counterforce (eg lifting loads). This knowledge is used in competitive sports to ^* increase training efficiency by, in the case of repetitive movement exercises under load, the part of the movement in which a counterforce is overcome (also referred to as a positive or concentric part of the movement), in particular around 20% -40% less counterforce is exerted than the part of the movement in which a counterforce is given (also referred to as a negative or eccentric part of the movement). If the highest maximum force growth rates are to be achieved, the concentric part of the movement preferably takes place by overcoming a counterforce which is about 10% to 20% smaller than the current maximum force of the exercising person, while the eccentric part of the movement yielding to one Counterforce occurs that is greater than the maximum force of the person. When training with free weights AESS this training methodology ge the different counter-forces are generated in that manner is relieved by manual intervention during the concentric part of the movement a partially ^■ or during the eccentric part of the movement, an additional burden on the dumbbell. For example, with a bench press, the exercising person first pushes a 100 kg dumbbell upwards (concentric muscle work), which is then provided in the upper position by auxiliary persons on each side with an additional 10 kg weight plate. The person then lets the 120 kg dumbbell slowly sink back into the starting position (eccentric muscle work). When they reach the starting position, the helpers remove the two 10 kg discs, whereupon ^• = the person resumes the original 100 kg upwards ^; , presses (concentric muscle work). This process will be. ' repeated as long as possible, ^' until the trainee ^•' ■ ^•

• for temporary exhaustion. the ■■ to be trained; Muscle is coming. While being targeted and ^■ ■. ' The disadvantage is that the different counterforces can be reproducibly adjusted, that at least for exercises with barbells, such as those used to train both halves of the body at the same time, auxiliary persons are required, so that in many cases the training method mentioned in the beginning is not lacking due to the lack of such auxiliary persons can be applied. Strength training devices are also known from the prior art, in which the counterforces are generated electromechanically or pneumatically and can be set separately for the concentric and the eccentric part of the exercise movement. However, these training devices are relatively expensive and maintenance-intensive and have poor reproducibility of the opposing forces in the long term, which, however, is essential for professional training and for reliable measurement of training success. Also are with these Strength training machines do not recognize the opposing forces overcome during training in the form of moving weights, which, in contrast to training on training machines with weight plates or plug weights, leads to the loss of the 5 motivation effect that is usually caused by this and is also a reason for training machines with visible weights enjoy greater popularity among exercisers than electrical or pneumatic training devices.

10 Furthermore, training devices with a barbell bar are known from the prior art, in which the barbell bar can be raised by means of electrical or pneumatic aids. For this, reference is made, for example, to documents US 5 310 394, US 5 314 394, US 4

15,949,959, U.S. 5,048,826, U.S. 5,823,921 and U.S. 5,989,166. EP 0 132 162 AI also shows a training device with ^• insert weights, in which ^■ the weight of the insert weights within a certain range:

^{■ •} r can be lifted using a foot pedal in order to

20. To allow load-free gripping and releasing a handle bar. With these training devices, however, it is not possible to generate different, precisely defined counterforces for the concentric and the eccentric part of the exercise movement.

DESCRIPTION OF THE INVENTION It is therefore an object to provide a strength training device which does not have the disadvantages of the prior art or at least partially avoids them. This object is achieved by the strength training device according to claim 1. Accordingly, the strength training device, which is provided for the targeted training of specific muscles or 35 muscle groups of a person, has a force transmission element, for example a grip bar, a foot pressure plate or a rolling seat, which is removed from the person Actuation of the muscles or muscle groups to be trained can be moved back and forth alternately between a first position (movement starting position) and a second position (movement end position). Here uss in a first direction of movement, for example when moving the

Force transmission element from the movement starting position to the movement end position, a counterforce is overcome (concentric part of the exercise movement) and in a second movement direction opposite to the first movement direction, for example during the return movement of the force transmission element from the movement end position to the movement starting position, a counterforce is given (more eccentric Part of the exercise movement). The movement in the first movement direction and the movement in the second movement direction typically take place along identical movement paths, but it is also provided that they are carried out along different movement paths. The production . the counter-forces in the strength training device are exclusively lent by means of gravity to movable weights, which are caused by. rigid coupling or via suitable coupling means, such as wire ropes, chains or linkage, is wholly or partly transferred to the power transmission element. When the force transmission member is moved in the first direction of movement, weights are raised and when it is moved in the second direction of movement it is lowered. The movable weights consist of separately formed first and second movable weights or sets of weights, which are preferably mechanically coupled to one another or can be coupled in such a way that lifting the first weights is only possible in combination with lifting the second weights, but the second Weights can be lifted independently of the first weights. Furthermore, the strength training device includes relief aids, for example a lifting device which can be actuated by muscle strength or electrical controls which can be controlled by the operator. hydraulic or pneumatic lifting means with which the second weights can be lifted independently of the first weights at least during a movement of the actuating member in the first direction of movement, so that the effect of the second weights for the counterforce during the movement of the power transmission member in the first direction of movement is completely eliminated and the counterforce acting during this movement is generated exclusively by the first weights. This creates a strength training machine with which training under different, precisely defined and reproducible training loads for the concentric and the eccentric part of the exercise movement is possible and with which the training loads are visualized by moving weights. Such a strength training machine offers the user maximum training efficiency and motivates them ^• to achieve maximum performance through the direct recognizability of the loads mastered. In a preferred embodiment, relief aids are used which are electrical,. pneumatic or hydraulic drives or can be driven by the muscular strength of the exercising person. In addition to a certain degree of comfort, the use of the first-mentioned relief aids, which are powered by external energy, offers the advantage that the user only has to provide the muscle strength required for the desired training exercise and can therefore devote all his energy to the training. The use of muscle-powered relief aids, however, has the advantage that the training device is easy to set up, inexpensive and can be used anywhere and also trains the coordinative skills of the exerciser. If relief aids with an electric, pneumatic and / or hydraulic drive are used, it is preferred that these are in the training position by the user by means of an actuating member belonging to the relief aid, such as a Foot pedal, a hand lever or a push button can be activated or that they are automatically activated in training mode when a certain position of the power transmission element is reached or when it moves in the first direction of movement and when another specific position of the power transmission element is reached or when it is moved in the second Direction of movement can be deactivated automatically. This can be done by a control with suitable sensors or switches and offers the greatest possible training comfort. If, however, relief aids are used which are driven by muscle strength, it is preferred that these can be driven by muscles or muscle groups of the user which are not to be specifically trained during the training exercise. If the strength training device is intended, for example, for training certain muscles or muscle groups of the upper body, the relief aids are preferably removed from the legs of the user, preferably via feet. dale, driven. Is the strength training device for example for training certain muscles or muscle groups. Provided pen of the legs, the relief aids are preferably driven with the arms of the user, preferably via hand pedals or hand levers. This allows an unwanted early

Avoid fatigue of the muscles or muscle groups to be trained, even with purely mechanical training equipment. In a further preferred embodiment of the training device, first and second weight plates are used as the first and second weights, and the training device provides at least one first and one second weight plate support bar for receiving them. So it is a weight plate weight training device. Such devices are simple and robust and have the additional advantage that existing weight plates can be used, which saves costs. The visualization effect is also in use of weight plates is particularly large, which generates a corresponding motivational benefit. The first weight plate support rod is advantageously arranged on a pivotable first weight arm and the second weight plate support rod is arranged on a pivotable second weight arm, it being preferred that both weight arms are pivotable about a common axis. In this way, an essentially loss-free mechanical coupling of the weight arms is possible in a simple manner. The first weight arm and the second weight arm are preferably provided with counterweights which are arranged and dimensioned such that the weight arms are in a state in which there are no weight plates their weight plate support bars are arranged, are balanced. In this way it can be ensured that the weight arms are weight-neutral and that the load to be handled comes exclusively from the weight plates. It is also preferred that the weight arms in the case of non-activated relief aids are operatively connected in such a way that the second weight arm transfers the weight force of the second weight plates completely or partially to the first weight arm by a form fit. This enables simple and wear-free coupling. For this purpose, the first weight arm preferably has a support surface for the second weight arm, which is advantageously arranged laterally in the region of its center. It is also advantageous if additional

Means for temporarily fixing the second weight arm to the first weight arm are present, so that the relief aids can also be used to jointly relieve the first and second weight plates. In the strength training device, the force transmission element is rigid with the first weight arm connected, and also preferably the second weight arm rigidly connected to an actuator assigned to the relief means, such as a foot pedal, a hand pedal or a hand lever, this results in a particularly low-maintenance design with a minimum of moving components. In another preferred embodiment of the strength training device, first and second insertion weights in first and second weight sticks are used as first and second weights. It is therefore a plug-in weight training device, which has the advantage that all weights are always available and the preselected training weight can be changed quickly and without effort. The first and second weights are preferably arranged directly next to one another and coupled to one another in such a way that, when the relief aids are not activated, the second weights transmit the weight of the preselected second plug weights to the first weights by positive locking, which results in a simple and secure coupling between the first and second Leading weights. In addition, it is preferred that additional means are provided for temporarily fixing the second weight on the first weight so that the relief aids can, if desired, also be used for a combined relief of the first and second insertion weights. In these embodiments of the training device, both weight sticks preferably each have a guide bar on their upper side, which is guided along vertical guides, for example guide rods or rails. The guide bar of the first weight block provides support surfaces, advantageously in cutouts on its upper side, for resting driver elements, such as driver pins or driver pins, arranged on the guide bar of the second weight block. By Such a structural design of the weights is a reliable and inexpensive coupling of the weights or the preselected insertion weights of the same possible. It is further preferred that the

Guide bar of the second weight block has a guide rod which extends through the second plug-in weights of the same and which is guided in the region of the base of this weight block in a slide bearing bush, preferably made of bronze or plastic, over the maximum intended stroke length of the second weight block. This guide rod can at the same time serve as a sword for the weight block for coupling the preselected second plug-in weights and ensures particularly good guidance of the guide bar of the second weight block, which is acted upon by the driving elements. In the case of the plug-in weight training devices, the force transmission element can preferably be connected or connected to the first plug-in weights via a chain, a band or a wire rope, with or without deflection elements. It is also preferred that the second plug-in weights can be connected or connected to an actuating element such as a foot pedal, a hand pedal or a hand lever via such components, as a result of which the relief aids are formed in this case. This construction opens up the possibility of arranging the power transmission element and the actuating element at practically any point, which favors the construction of multifunctional training devices according to the invention. In order to take into account the practical needs of the users as well as possible, it is advantageous if the maximum weight capacity of the first weight stick is approximately twice as large as the maximum weight capacity of the second weight stick, or in other words if the total weight of all available first insertion weights is about twice as large like that of all available second weights. In this sense, it is also preferred if the individual first insertion weights are twice as heavy as the individual second insertion weights, so that the weight gradation of the second weight stick is half as large as that of the first weight stick.

BRIEF DESCRIPTION OF THE DRAWINGS Further advantages and applications of the invention emerge from the following description based on the figures. 1 shows a plan view of a weight training device according to the invention for bench presses; FIG. 2 shows a side view of the strength training device from FIG. 1 with the secondary weight arm deflected; FIG. 3 shows a section along the line AA in Fig. 1. FIG. 4 shows a representation like FIG. 3 with the auxiliary weight arm fixed positively on the main weight arm; 5 shows a side view of a plug-weight strength training device according to the invention for arm bending exercises while sitting; , FIG. 6 shows a top view obliquely from above of the main and secondary weight stock of the strength training device from FIG. 5; FIG. 7 shows a partially sectioned side view of the main and auxiliary weight stock shown in FIG. 6 with the auxiliary weight stock raised; FIG. 8 is a top view obliquely from above of a first variant of the main and secondary weight stick of the strength training device from FIG. 5; FIG. 9 is a top view obliquely from above of a second variant of the main and secondary weight stick of the strength training device from FIG. 5; and 10 shows a side view of a further plug-weight training device according to the invention for arm-bending exercises with pneumatic relief aids.

WAYS OF IMPLEMENTING THE INVENTION The basic structure of a preferred embodiment of the invention can be seen in FIG. 1, which shows a plan view of a weight plate support strength training device for bench press. As is well ^'may be seen, the exercise machine on a platform 1, which is flanked on each side by a respective Hauptgewichtsarm 2 (according to the claims of the first weight arm 2) and a Nebengewichtsarm 3 (challenging according to the second weight arm 3) in which first weight plates 4 and second weight plates 5 are arranged on weight plate support rods 6. The weight arms 2, 3 on each side are mounted parallel to each other, each with ball bearings 7 pivotable about a common pivot axis, on an axis 8 in the foot area of the lying surface 1 of the training device and have counterweights 12 at their ends facing away from the weight plate support rods 6, with which they if weights 4, 5 are not placed on the balance. The main weight arms 2 each have a handle 9 on their inside in the extension of the weight plate support rod 6, which, like the weight plate support rod 6, is rigidly connected to the main weight arm 2 and serves as a force transmission element on one hand of the exercising person. As can be seen in combination with FIG. 2, which shows a side view of the strength training device from FIG. 1 with the secondary weight arm 3 deflected upward, the secondary weight arms 3 each have an upwardly projecting lever arm 10 in the region of their mounting on the axis 8, which carries a foot pedal 11 on its inside. Together with the lever arm 10, this foot pedal 11 forms a tools 10, 11, which enables the exercising person to raise the secondary weight arm 3 with the second weight plates 5 located thereon by leg force into the position shown. 3, which shows a section along the line A-A in FIG. 1, each main weight arm 2 has on its outside in the region of its center an upwardly open urofilal section 13, in which the The associated secondary weight arm 3 can be immersed to rest on a support surface in the base area of the U-profile. As a result, the secondary weight arm 3 can transmit the weight of the second weight plate 5 carried by it to the main weight arm 2. As can also be seen in combination with FIG. 4, the U-profile section 13 also has a bore 14 which extends through its two legs and which is provided with an internal thread 15 in one leg of the U-profile and a temporary positive fit Fixing the secondary weight arm 3 on the main weight arm 2 with the aid of a threaded bolt 16. As can be easily seen, the training device shown in FIGS. 1 to 4 basically consists of two independent strength training devices according to the invention, namely one for each half of the body of the exercising person. If the main weight arms 2 of both sides were forcedly synchronized with one another, for example by means of a continuous handle bar instead of the two handles 9, this would result in a training device according to the invention acting jointly for both body halves. In order to train the upper body muscles of a person with different counterforces during the concentric and eccentric part of the exercise movement, any force coupling of the main and secondary weight arms 2, 3 is first removed by removing the threaded bolts 16. Then the first and second dumbbell Discs 4, 5 for the main and secondary weight arms 2, 3 selected and placed as desired. The exercising person now lies with his back on the lying surface 1 of the training device, puts his feet on the foot pedals 11 and grips the handles 9. The actual training cycle can now begin. The exercising person now presses both feet against the foot pedals 11 so that the secondary weight arms 3 with the second weight plates 5 arranged thereon are lifted off their support surfaces in the U-profile sections 13. It is thereby achieved that the weight forces of the second weight plates 5 only act on the secondary weight arms 3, but not on the main weight arms 2. This situation is shown in FIG. 2. Then the training person pushes the handles 9 upwards, overcoming a counterforce generated exclusively by the first weight plates 4 (concentric part of the exercise movement). Once there, the exercising person relieves the pressure on the foot pedals 11, as a result of which the secondary weight arms 3, if this has not already occurred during the upward movement of the main weight arms 2, enter the U-profile sections 13 on the outer sides of the main weight arms 2, there onto the Support surfaces rest and transfer the weight of the second weight plates 5 to the main weight arms 2. Now the exercising person slowly lets the handles 9 sink back into the starting position, giving in to the greater counterforce now generated by the first and second weight plates 4, 5 (eccentric part of the exercise movement). This cycle is repeated until there is a temporary exhaustion of the muscles or muscle group to be trained. If, on the other hand, you want to train with the same counterforce for the concentric and eccentric part of the exercise movement, or if it is unimportant to maintain a precise load for the concentric part of the exercise movement, the main and secondary weight arms can be used 2, 3 are positively coupled to one another by screwing the threaded bolts 16 into the bores 14, 15 of the U-profiles 13, as a result of which a relief, albeit not precisely defined, is obtained both during the upward movement (concentric part of the exercise movement) and during the Downward movement (eccentric part of the exercise movement) of the handles 9 via the foot pedals 11 is possible. In the present case, the secondary weight arms 3 or their weight plate support rods 6 are dimensioned such that their disc support capacity is at least 50% of the disc support capacity of the main weight arms 2, which is preferred. The weight plate support rods 6, which in the example shown are each arranged on the same sides of the main and secondary weight arms 2, 3 of one side of the training device (here in each case on the outside of the weight arms 2, 3), can also be on. be attached to different sides, for example on the outside of the main weight arms 2 and on the inside of the secondary weight arms 3, which, depending on the type of device; Can bring advantages. The basic structure of a further preferred embodiment of the invention can be seen from FIG. 5, which shows a plug-in weight training device according to the invention for arm bending exercises while sitting in a side view. The training device has a seat 17 for the exercising person, in front of which an inclined support surface 18 for the upper arms of the person and a handle bar 9 is arranged, which is pivoted by a lever 19 and a wire rope 20 with pulleys with a maximum of nine 5 kg plug weights 4 is operatively connected in a main weight block 21 (according to the first plug weights 4 in a first weight stick 21), such that moving the handle bar 9 in the direction of the exercising person causes these plug weights 4 to be lifted. Below the contact surface 18 A foot pedal 11 is arranged, which is operatively connected via a wire rope 20 with deflection rollers with a maximum of nine 2.5 kg plug-in weights 5 in a secondary weight stick 22 (according to claim second plug-in weights 5 in a second weight stick 22) in such a way that the foot pedal 11 is depressed lifting this ^' second plug weights 5 causes. As can be clearly seen in combination with FIG. 6, which shows a top view obliquely from above of the main and secondary weight stock of the strength training device from FIG. 5, the main and secondary weight stocks 21, 22 are arranged directly next to one another on a common base plate 23 , Each of the two weight sticks 21, 22 has a guide bar 24 which. the respective stack of plug-in weights 4, 5 is arranged and on its underside has a sword (not shown) which penetrates the plug-in weights 4, 5 and on which a desired number thereof and thus a certain weight by inserting a mandrel 31 into the locking bore 25 of a specific insertion weight 4.5 _. can be attached in a known manner. The guide bars 24 and the plug weights 4, 5 arranged below them are penetrated by vertical guide rods 26 and guided along them. In the secondary weight stick 22, the sword also has a sword extension 27, which penetrates the base plate 23 and is guided over the entire intended stroke length of the auxiliary weight stick 22 in a plastic bearing bush 28 pressed into the base plate 23. In the guide bar 24 of the auxiliary weight block 22, two driver bolts 29 are fastened by screwing into corresponding threaded bores, which enter horizontally into slot-like cutouts 30 in the guide bar 24 of the main weight stick 21 that open upwards, such that when the preselected first insertion weights 4 of the main weight stocks 21 also automatically selects the currently selected ones second plug-in weights 5 of the secondary weight stick 22 can be raised, but raising the latter second plug-in weights 5 is however possible without lifting the just selected first plug-in weights 4 of the main weight stick 21. The latter situation is shown in Fig _. 7, which shows a partially sectioned side view of the main and auxiliary weight sticks 21, 22 shown in FIG. 6 with the preselected second insertion weights 5 of the second auxiliary weight stick 22 raised. FIGS. 8 and 9 each show a top view obliquely from above of a variant of the main and secondary weights of the strength training device from FIG. 5. In contrast to the embodiment of the weights 21, 22 shown in more detail in FIG. variant, the driving pin 29 and the slot-like cutouts 30, in which they occur, is not arranged between the guide rods 26, but next to the same, and iN- ^'FIG. 9, these are not incorporated in the guide bars 24 themselves, but each of structures 32 shown 8 on the guiding bars 24. To train the upper arm muscles of a person with different counterforces during the concentric and eccentric part of the exercise movement, the exercising person, after preselecting the desired main and secondary weight stick loads, by inserting the mandrels 31 into the locking holes 25 of certain plug weights 4, 5 im Main and secondary weight stick 21, 22, seat 17, put your feet on the foot pedal 11 and grasp the handlebar 9 with both hands. The training cycle can begin. First, the exercising person now presses the foot pedal down with his feet, as a result of which the selected second insertion weights 5 of the secondary weight stick 22 are raised into the position shown in FIG. 7. Now the exercising person bends both arms and thereby swivels the handle bar 9 while overcoming a finally through the preselected first insertion weights

4 of the main weight stick 21 generated counterforce towards itself (concentric part of the exercise movement). Arrived in an end position, the exercising person relieves the foot pedal 11, as a result of which the driving bolts 29 come to rest in the slot-shaped cutouts 30 in the guide bar 24 of the main weight stick 21 and thereby the weight of the preselected second insertion weights

5 of the counterweight stock 22 on this guide bar 24 and thus as an additional counterforce on the handle bar

9 transferred. Now the exercising person has the handlebar 9 slowly giving way to the starting position, yielding to the counterforce which has now increased by the weight of the preselected plug-in weights 5 of the auxiliary weight stick 5 (eccentric part of the exercise movement). This cycle is repeated until there is a temporary exhaustion of the muscles or muscle group to be trained. 10 shows a side view of a variant of the plug-in weight training device from FIG. 5 in accordance with the invention, in which the preselected second plug-in weights 5 of the auxiliary weight stick 22 are lifted and not with muscle power, but with the aid of two pneumatic cylinders 34 attached to the auxiliary weight stick 22 at the front and rear can be lowered. The pneumatic cylinders 34 are controlled via a pedal rocker 33. Otherwise, the mode of operation of the training device is identical to that described above. Instead of the pneumatic cylinders 34 used here, it is also provided to use hydraulically or electrically driven relief aids. In addition, it is also intended to control them automatically, e.g. by installing sensors or position switches which, during training, correspond to a position corresponding to the starting position of the concentric part of the exercise movement

Handlebar 9 or when moving the same in a first direction of movement A, the preselected second Plug weights 5 lifting of the side weight Stocks 22 and that of the concentric portion of the exercise movement and an initial position of the eccentric portion of the same corresponding position of the handle bar of the same ^'auflastet at the end position 9 or at a movement in a second, opposite direction of movement B of the main weight Stock 21st While preferred embodiments of the invention are described in the present application, it should be clearly pointed out that the invention is not limited to these and can also be carried out in other ways within the scope of the following claims.

Claims

claims

1. Strength training device for training certain muscles or muscle groups of a person, with a force transmission element (9), which can be moved back and forth between a first and a second position by the person by actuating the muscles or muscle groups to be trained, in a first Direction of movement (A) a counterforce must be overcome and a counterforce must be given in a second direction of movement (B) opposite to the first direction of movement, and movable weights (4, 5) are provided or are available for generating the counterforce which are connected to the force transmission element ( 9) are operatively connected in such a way that they are raised in the first direction of movement (A) when the force transmission element (9) is moved and lowered in the second direction of movement (B) when the force transmission element is moved, characterized in that the movable weights (4, 5 ) first movable weights (4) and second movable weights (5) are provided or are present, which can be coupled or coupled in such a way that lifting the first weights (4) is only possible in combination with lifting the second weights (5), while the second weights (5) are independent of the first weights (4) can be raised, and that relief aids (10, 11, 20, 33, 34) are available, with which the second weights (5) can be raised independently of the first weights (4), to completely cancel the effect of the second weights (5) for the counterforce acting on the force transmission element (9) during a movement of the force transmission element (9) in the first direction of movement (A).

2. Strength training device according to claim 1, characterized in that the relief aids (10, 11, 20, 33, 34) can be driven by electrical, pneumatic or hydraulic drives (34) or by the muscular strength of the exercising person.

3. strength training device according to claim 2, with relief aids (33, 34) with an electrical, pneumatic or hydraulic drive (34), characterized in that the relief aids (33, 34) can be activated by means of a foot pedal (11, 33), hand lever or push button or automatically activated in training mode when a certain position of the force transmission element (9) is reached or when it moves in the first direction of movement (A) and when another specific position of the force transmission element (9) is reached or when it moves in the second direction of movement (B) be deactivated.

4. Strength training device according to claim 2, with muscle aids relieving aids ^' (10, 11, 20), characterized in that the relief aids (10, 11, 20) can be driven in the training position of muscles or muscle groups of the person, which are not during the training exercise should be trained. '5 .. strength training device according to one of the preceding claims, characterized in that as first and second weights (4,

5) first weight plates (4) and second weight plates (5) are provided or are present on the first and second weight plate support rods (6).

6. strength training device according to claim 5, characterized in that the first weight plate support rod (6) on a pivotable first weight arm (2) and the second weight plate support rod (6) are arranged on a pivotable second weight arm (3), and in particular that both Weight arms (2, 3) are pivotable about a common axis (8).

7. strength training device according to claim 6, characterized in that the weight arms (2, 3) are provided with counterweights (12) such that they are balanced in a state not equipped with weight plates (4, 5).

8. - strength training device according to one of claims 6 to 7, characterized in that the weight arms (2, 3) in the case of non-activated relief aids (10, 11, 20, 33, 34) are operatively connected to one another in such a way that the second weight arm (3 ) transmits the weight of the second weight plates (5) to the first weight arm (2) by positive locking, and in particular that additional means (13, 14, 15, 16) are available for the temporarily fixed coupling of the second weight arm (3) to the first Low weight (2).

9. Strength training device according to claim 8, characterized in that the first weight arm (2) has a bearing surface for the second weight arm (3) which is arranged on the side in the region of its center.

Strength training device according to one of claims 6 to 9, characterized in that the force transmission element (9) is rigidly connected to the first weight arm (2), and in particular that the second weight arm (3) is also rigid, with an actuating element belonging to the relief aids (11) is connected.

11. Strength training device according to one of claims 1 to 5, characterized in that as first and second weights (4, 5) first plug-in weights (4) in a first weight block (21) and second plug-in weights (5) in a second weight block (22) available.

12. Strength training device according to claim 11, characterized in that the first weight stick (21) and the second weight stick (22) are arranged directly next to one another and are operatively connected to one another in the case of non-activated relief aids (10, 11, 20, 33, 34), that the second weight stick (22) transmits the weight of preselected second plug weights (5) to the first weight stick (21) by positive locking, and in particular that additional means are available are for temporarily fixed coupling of the second weight stick (22) to the first weight stick (21).

13. strength training device according to claim 12, characterized in that both weight sticks (21, 22) each have on their upper side a guide bar (24) which is guided along vertical guides (26), and that the guide bar (24) of the first weight stick ( 21) Support surfaces, in particular in millings (30), have carrier elements arranged on the guide bar (24) of the second weight block (22), in particular designed as carrier pins or carrier bolts (29).

14. Strength training device according to claim 13, characterized in that a guide rod (.27) which extends through the second plug-in weights (5). Is fastened to the guide bar (24) of the second weight stick (22) and is in the region of the floor (23 ) of the second weight (22) in one. Slide bearing bushing (28), in particular made of bronze or plastic, is guided over the entire stroke length of the second weight stack (22).

15. strength training device according to one of claims 11 to 14, characterized in that the force transmission member (9) via a chain, a band or a wire rope (20) with the first plug weights (4) is connectable or connected, and in particular that the second Plug weights (5) can be connected or connected via a chain, a band or a wire rope (20) to an actuating organ (11) assigned to the relief aids.

16. Strength training device according to one of claims 11 to 15, characterized in that the maximum weight capacity of the second weight stick (22) is approximately 50% of the maximum weight capacity of the first weight stick (21).

17. strength training device according to one of claims 11 to 16, characterized in that the Weight gradation of the second weight stick (22) is half as large as that of the first weight stick (19).