MECHANICS OF SHOULDER LOCOMOTOR SYSTEM DURING EXERCISES RESISTED BY WEIGHT-AND-PULLEY-CIRCUIT

  • 1 January 1978
    • journal article
    • research article
    • Vol. 10  (4) , 171-177
Abstract
The different ways of using a weight-and-pulley-circuit (wpc) to influence the mechanics of a [human] joint with adjacent muscles were investigated. A formula for the resisting moment with respect to a joint was developed and used in a computer model. The resistive effect of various modes of application of the wpc was calculated. The resisting moment is influenced by changes of the angle between the horizontal plane and a line between joint and pulley (height of position of pulley), the distance between joint and pulley; and, the weight applied to the rope of the wpc, and the weight of the limb.