| 摘要 |
<p>An exercise device for use in dystrophy therapy employs a compression spring (26) which provides an adjustable resistance force. Manual application of a push-type force to a handle (40) actuates a cumulative timer circuit (62) for recording the elapsed time at which an exerted force exceeds a pre-established threshold force. The exercise device may also be converted to a pull mode wherein a pull force exerted between a plate (82) and a handle (70,72,75,) connecting the exercise device actuates a cumulative timer circuit (84). The threshold force is adjustable by changing the axial position of the compression spring seat (30). </p> |
