Exercise isokinetic apparatus

In exercise apparatus wherein there is provided a support frame for a first beam member which is pivotally mounted adjacent to one end thereof on said support frame for pivotal movement about a horizontal axis and said first beam member having a free end adapted to be grasped by a weight-lifter in lifting and lowering a weight suspended from said first beam member, the improvement comprising:

• a second beam member pivotal on said support frame in vertically spaced relation to said first beam member and a weight-lifting bar on said second beam member including means for releasably supporting varying amounts of weights thereon;
• suspension means for suspending said second beam member from said first beam member for movement in response to lifting and lowering of said free end of said first beam member, and adjustable control means for varying the distance of said weight-lifting bar with respect to said pivotally connected end of said second beam member whereby to vary the effective weight of said first and second beam members, said adjustable control means including a rotatable screw member extending parallel to said second beam member, means for imparting linear advancement to said weight-lifting bar along said screw thread member in response to rotation of said screw member, and drive means for rotating said screw member;
• and
• resistance means for imparting a variable resistance to pivotal movement of said first and second beam members and said suspension means as they are lifted and lowered by a weight-lifter, said resistance means including a fluid cylinder and piston interposed between one of said first and second beam members and said support frame, and fluid control circuit means operative to regulate the pressure of fluid in said cylinder.