Lindh M
Scand J Rehabil Med. 1979;11(1):33-6.
Isometric quadriceps exercises were performed at two different knee angles, 15 and 60 degrees respectively. The maximal torque was measured in both positions before and after training in 10 healthy females. Both legs were exercised, one at each position. The purpose was to develop practical recommendations for choice of training position. The strength increase was mainly specific according to the angle at which the knee was exercised. It was suggested that isometric exercise would preferably be performed at different knee angles to secure an optimal total strength increase. Isometric exercises improved dynamic strength at a low velocity but not at a high velocity.
等长股四头肌练习分别在两个不同的膝关节角度进行，即15度和60度。对10名健康女性在训练前后的这两个位置测量了最大扭矩。双腿都进行了练习，每个位置各一条腿。目的是为训练位置的选择制定实用建议。力量增加主要根据膝关节练习的角度具有特异性。建议等长练习最好在不同的膝关节角度进行，以确保获得最佳的总体力量增加。等长练习可提高低速时的动态力量，但不能提高高速时的动态力量。
