Murray M P, Gardner G M, Mollinger L A, Sepic S B
Phys Ther. 1980 Apr;60(4):412-9. doi: 10.1093/ptj/60.4.412.
Maximum isometric and isokinetic torques of the knee flexor and extensor muscles were measured at three knee joint positions in 72 normal, health men in three age groups from 20 to 86 years. The isokinetic contractions were performed at a speed of 36 degrees per second. The isometric contractions were sustained for five seconds. Strength of the men in the older age groups was significantly less than that of the youngest group. The strength of the isokinetic contractions was significantly less than that of the isometric contractions for all joint positions. The men in the oldest age group generally took longer than the younger men to reach peak torque during the isometric contractions. The torque values provide base-lines for evaluating patients with knee joint disabilities.
在三个膝关节位置测量了72名年龄在20至86岁之间的正常健康男性的膝关节屈肌和伸肌的最大等长和等速扭矩。等速收缩以每秒36度的速度进行。等长收缩持续5秒。年龄较大组男性的力量明显小于最年轻组。在所有关节位置，等速收缩的力量明显小于等长收缩。在等长收缩期间，年龄最大组的男性通常比年轻男性花费更长时间达到峰值扭矩。这些扭矩值为评估膝关节残疾患者提供了基线。
