STRENGTH OF ISOMETRIC AND ISOKINETIC CONTRACTIONS - KNEE MUSCLES OF MEN AGED 20 TO 86
STRENGTH OF ISOMETRIC AND ISOKINETIC CONTRACTIONS - KNEE MUSCLES OF MEN AGED 20 TO 86
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DOI：
10.1093/ptj/60.4.412
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发表时间：
1980-01-01
期刊：
影响因子：
3.2
通讯作者：
SEPIC, SB
中科院分区：
文献类型：
--
作者：
MURRAY, MP;GARDNER, GM;SEPIC, SB
对 20 至 86 岁三个年龄组的 72 名正常健康男性的三个膝关节位置测量了膝屈肌和伸肌的最大等长扭矩和等速扭矩。等速收缩以每秒36度的速度进行。等长收缩持续五秒钟。老年组男性的力量明显低于最年轻组。对于所有关节位置，等速收缩的强度均明显小于等长收缩的强度。在等长收缩过程中，年龄最大的男性通常比年轻男性需要更长的时间才能达到峰值扭矩。扭矩值为评估膝关节残疾患者提供了基线。
Maximum isometric and isokinetic torques of the knee flexor and extensor muscles were measured at three knee joint positions in 72 normal, healthy 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.