Currier D P
Phys Ther. 1975 Aug;55(8):870-4. doi: 10.1093/ptj/55.8.870.
The purpose of the study was to ascertain whether a wedge placed under the knee during resistive exercise enhances quadriceps strengthening and the length-tension relationship of the quadriceps. Twenty normal women students were tested for maximal isometric contraction of their left quadriceps at different knee positions. The test positions were zero, 30, 60, and 90 degrees. The greatest muscle force was recorded when the knee angle was 60 degrees and the least force was recorded when the knee extended fully. The results of the length-tension relationship of muscle obtained in this study adhered to the accepted concept. Values recorded for quadriceps force when the wedge was placed under the knee did not differ significantly from those values recorded when the wedge was not used. The use of the wedge in quadriceps exercise does not appear to be an effective means of generating greater force than when no wedge is used.
该研究的目的是确定在阻力运动期间在膝盖下方放置一个楔形物是否能增强股四头肌力量以及股四头肌的长度-张力关系。对20名正常女学生的左股四头肌在不同膝关节位置进行最大等长收缩测试。测试位置为0度、30度、60度和90度。当膝关节角度为60度时记录到最大肌肉力量，当膝关节完全伸展时记录到最小力量。本研究中获得的肌肉长度-张力关系结果符合公认的概念。在膝盖下方放置楔形物时记录的股四头肌力量值与未使用楔形物时记录的值没有显著差异。在股四头肌锻炼中使用楔形物似乎并不是一种比不使用楔形物时产生更大力量的有效方法。
