| 摘要 |
<p>An apparatus for measuring the instantaneous power generated by a leg extension includes a seat (3) provided above a drive system unit (2) on which a subject (M) is seated. A slide rail (4) extends forwardly from the drive system unit, and a foot plate (5) slides along the slide rail (4) in forward and backward directions. A rope (6) connected to the foot plate is provided in the drive system unit (2) in order to be paid out in response to the forward sliding movement of the foot plate (5). This apparatus also includes a transmission device (9), which rotates in response to the rope paying-out and a powder brake (10), which is rotated by the transmission device (9). A foot load sensor (11) is also mounted on the foot plate in order to detect the foot load developed when the subject extends his/her legs, and a rotation frequency sensor (12) is provided at a predetermined position within the drive system unit (2) in order to detect the rotation frequency of the powder brake (10). In addition, a processing unit (13) is used to calculate the average speed, the average muscle power, the average power and the peak power generated by the subject's legs, according to the detection signals from the foot load sensor (11) and the rotation frequency sensor (12). These calculations are visually and auditorially displayed to the subject by an indicator device (14a, 14b).</p> |
