Gender differences in FFM accumulation and architectural characteristics of muscle
Gender differences in FFM accumulation and architectural characteristics of muscle
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DOI：
10.1097/00005768-199807000-00007
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发表时间：
1998-07-01
期刊：
影响因子：
--
通讯作者：
Brown, JB
中科院分区：
文献类型：
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作者：
Abe, T;Brechue, WF;Brown, JB
用途：本研究的目的是深入了解女性骨骼肌的发育潜力，并评估肌肉羽状角（PANG）和肌束长度对肌肉大小或FFM积累的性别差异的贡献。研究方法：对29名力量训练的女大学生运动员和22名年龄、身高相匹配的男大学生运动员的骨骼肌肌构筑特征和FFM进行了研究。用B型超声测量13个解剖部位的肌肉厚度（MTH）。在体内测量三头肌长头（TL）、股外侧肌（VL）和腓肠肌内侧肌（MG）的孤立MTH和PANG，并估计肌束长度。结果：6名女运动员FFM均在60 kg以上，最大值为82.1 kg;一般来说，男性运动员在除大腿前部以外的所有部位的FFM和MTH均显着更大。孤立的MTH和PANG，TL，VL和MG在男性中更大。三种离体肌肉的肢体长度和肌束长度均无性别差异。MTH和PANG在TL（r = 0.84）和MG（r = 0.41）中观察到显著相关性，但在VL中未观察到。结论：与以前的估计相反，我们得出结论，女性FFM累积和FFM与身高比的理论上限分别大于80 kg和0.44 kg cm（-1）。PANG中的性别差异似乎与肌肉大小（MTH）的差异有关，并且似乎并不独立地对FFM中的性别差异做出贡献。
Purpose: The purpose of this study was to gain insight into the skeletal muscle development potential in women and to evaluate the contribution of muscle pennation angle (PANG) and fascicle length to gender differences in muscle size or FFM accumulation. Methods: Skeletal muscle architectural characteristics and FFM were studied in 29 strength-trained female and 22 age- and height-matched male college athletes. Muscle thickness (MTH) was measured by B-mode ultrasound at 13 anatomical sites. Isolated MTH and PANG of the triceps long head (TL), vastus lateralis (VL), and gastrocnemius medialis (MG) muscles were measured in vivo , and fascicle length was estimated. Results: Six female athletes had more than 60 kg of FFM, with the largest being 82.1 kg. In general, male athletes had a significantly greater FFM and MTH at all sites except for the anterior thigh. Isolated MTH and PANG of, the TL, VL, and MG were greater in males. There were no gender differences in limb length or fascicle length of the three isolated muscles. A significant correlation was observed between MTH and PANG for TL (r = 0.84) and MG (r = 0.41), but not for VL. Conclusions: In contrast to previous estimates, we conclude that the theoretical upper limit of FFM accumulation and FFM-to-height ratio in women is greater than 80 kg and 0.44 kg cm(-1), respectively. Gender differences in PANG appear to be related to differences in muscle size (MTH) and do not appear to contribute independently to the gender difference in FFM.