Lateral Pull-Down

As partially illustrated in the figure, wherein FIG. A and FIG. B subsequently demonstrate the Lateral Pull-Down muscle training for right Arm/Torso and left Arm/Torso using a preferred embodiment of the Asymmetric Physical Exercise System of the present invention, which comprises:

• Interconnecting means that includes attachment means 1 such as handles, stirrups, hand grips, straps, pedals at each end of a flexible cable 2 for the trainee’s right hands 3R and left hand 3L to apply isometric load 10R and 10L against each other through the cable 2, the said cable 2 runs through a pulley system 4 including at least one pulley, which is connected to the rigid platform 5 such as the upper portion of a rigid frame via a supporting means comprising a supporting bracket 6 and a load sensing means 7 such as a load cell to monitor the supporting load 11, the length of the supporting bracket 6 is adjustable to accommodate for the trainee height;
• A bias load generating means 8 such as a weight unit for directly or indirectly applying a bias load 9 that is independent from the instantaneous motion velocity of the attachment interconnecting means to one of the trainee’s hands; for right Arm/Torso training, the bias load generating means 8 is attached to the trainee’s left hand 3L via the attachment means 1; alternately for left Arm/Torso training, the bias load generating means 8 is attached to the trainee’s right hand 3R via the attachment means 1. At equilibrium, the sum of all loads equals zero.

During right Arm/Torso training as illustrated in FIG. A, as both arms pull the cable 2 while moving in reciprocal motion, to keep the total load balanced the right arm 12R must exert a load that equals to the sum of the isometric load produced by the left arm 12L and the bias load 9 imposed by the bias load generating means 8; since the right arm 12R must exert greater load than the left arm 12L, the right arm 12R is the trainee member and the left arm 12L is the trainer member. With the assistance of the bias load 9, the left arm 12L only needs to exert an isometric load that is below its maximum endured capacity through out the routine in order to impose the total load to the right arm 12R at the right arm maximum capacity during concentric and eccentric motions. In left Arm/Torso training as illustrated in FIG. B, the role is reversed, the right arm 12R becomes the trainer member and the left arm 12L becomes the trainee member. Basically, the member that must resist the additional load produced by the bias load generating means is the trainee member, and the other is the trainer member.