Padmavathi R, Bharathi A V, Vaz M
Department of Physiology, St. John's Medical College, Bangalore.
Indian J Med Res. 1999 May;109:188-94.
Muscle strength was studied in 70 males and 53 females between the ages of 17-30 yr, using a handgrip dynamometer. In a subset group of 31 males and 20 females, muscle endurance during sustained isometric contraction was studied using a load cell based handgrip dynamometer coupled to a polygraph. The males had a significantly greater muscle mass and lower body fat as compared to the females. Males had close to twice the handgrip strength of females in absolute terms (P < 0.01) and this difference persisted after correction for forearm muscle area (P < 0.05). In contrast, the rate of decline of muscle strength during sustained isometric contraction was lower in females as compared to males (P < 0.05), suggestive of greater skeletal muscle endurance in females. Physical activity patterns were not a determinant of skeletal muscle function. These findings are consistent with gender specific muscle fibre characteristics reported in literature in other racial groups.
使用握力计对70名年龄在17至30岁之间的男性和53名女性进行了肌肉力量研究。在一个由31名男性和20名女性组成的亚组中，使用基于测力传感器的握力计与测谎仪相连，研究了持续等长收缩期间的肌肉耐力。与女性相比，男性具有明显更大的肌肉量和更低的体脂。从绝对值来看，男性的握力几乎是女性的两倍（P < 0.01），在对前臂肌肉面积进行校正后，这种差异仍然存在（P < 0.05）。相比之下，女性在持续等长收缩期间肌肉力量的下降速率低于男性（P < 0.05），这表明女性的骨骼肌耐力更强。身体活动模式不是骨骼肌功能的决定因素。这些发现与文献中报道的其他种族群体的性别特异性肌纤维特征一致。
