Maughan R J, Harmon M, Leiper J B, Sale D, Delman A
Eur J Appl Physiol Occup Physiol. 1986;55(4):395-400. doi: 10.1007/BF00422739.
The capacity to perform isometric and dynamic muscle contractions at different forces has been measured in two separate groups of subjects: 25 men and 25 women performed sustained isometric contractions of the knee-extensor muscles of their stronger leg to fatigue, at forces corresponding to 80%, 50% and 20% of the maximum voluntary force of contraction (MVC). The second experimental model involved a bilateral elbow-flexion weight lifting exercise. Eleven women and 12 men performed repetitions at loads corresponding to 90%, 80%, 70%, 60% and 50% of maximum load (1RM), at a rate of 10 X min-1 to the point of fatigue. Males were stronger (p less than 0.001) than females in both the static (675 +/- 120 N vs 458 +/- 80 N; mean +/- SD) and dynamic (409 +/- 90 N vs 190 +/- 33 N) contractions. Isometric endurance time of the males at a force corresponding to 20% of MVC was less than that of the females (180 +/- 51 s vs 252 +/- 56 s; p less than 0.001) but there was no difference between the sexes at 50% or 80% of MVC. Similarly, when the sexes were compared using dynamic elbow-flexion exercise, the female subjects were able to perform a greater number of repetitions than males at loads of 50% (p less than 0.005), 60% (p less than 0.001) and 70% (p less than 0.025) of 1RM, but there was no difference between the sexes at loads of 80% or 90% of 1RM.(ABSTRACT TRUNCATED AT 250 WORDS)
25名男性和25名女性对其较强一侧腿部的膝伸肌进行持续等长收缩直至疲劳，收缩力量分别相当于最大自主收缩力（MVC）的80%、50%和20%。第二个实验模型是双侧肘部屈曲举重运动。11名女性和12名男性以每分钟10次的速度，在相当于最大负荷（1RM）的90%、80%、70%、60%和50%的负荷下进行重复运动直至疲劳。在静态（675±120牛对458±80牛；平均值±标准差）和动态（409±90牛对190±33牛）收缩中，男性均比女性更强（p<0.001）。男性在相当于MVC的20%的力量下的等长耐力时间比女性短（180±51秒对252±56秒；p<0.001），但在MVC的50%或80%时两性之间没有差异。同样，在使用动态肘部屈曲运动比较两性时，女性受试者在1RM的50%（p<0.005）、60%（p<0.001）和70%（p<0.025）负荷下能够比男性进行更多次数的重复运动，但在1RM的80%或90%负荷下两性之间没有差异。（摘要截短于250字）
