Muscle fibre type populations of human leg muscles
Muscle fibre type populations of human leg muscles
复制标题
人体腿部肌肉的肌纤维类型群
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
D. Simpson
中科院分区：
文献类型：
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作者：
V. Edgerton;J. Smith;D. Simpson
从32人中选择4条腿肌（腓肠肌、比目鱼肌、股外侧肌和中间肌）在死亡后25小时内进行尸检，并进行组织化学检查。肌原纤维腺苷三磷酸酶组织化学活性的结果表明，比目鱼肌和股中间肌的慢颤肌纤维的比例（70%，47%）比它们的协同者，腓肠肌和股外侧肌，分别。腓肠肌含有约50%的慢缩纤维，股外侧肌约32%。在其他哺乳动物的后肢肌肉中，也有类似比例的慢肌纤维和快肌纤维。然而，人类肌肉与其他哺乳动物肌肉的不同之处在于，慢肌纤维和快肌纤维的比例在所检查的肌肉的浅表和深部区域中是相似的。在久坐不动的人类中观察到的快速收缩氧化糖酵解纤维不太频繁，并且与先前研究的几种实验室哺乳动物的类似纤维相比，它们在氧化酶活性方面不太突出。
SynopsisFour selected leg muscles (gastrocnemius, soleus, vastus lateralis and intermedius) from thirty-two humans were autopsied within 25 hr of death and examined histochemically. The results of histochemical myofibrillar adenosine triphosphatase activity demonstrated that the soleus and vastus intermedius muscles have a higher proportion of slow twitch fibres (70%, 47%) than their synergists, gastrocnemius and vastus lateralis, respectively. The gastrocnemius contains about 50% slow twitch fibres and the vastus lateralis about 32%. Similar proportions of slow and fast twitch fibres have been reported for these hindlimb muscles in other mammals. Human muscles, however, differ from other mammalian muscles in that the proportion of slow and fast twitch fibres were similar in the superficial and deep regions of the muscles examined. Fast twitch oxidative glycolytic fibres in sedentary humans were observed less frequently, and they are less prominent in terms of oxidative enzymatic activity when compared to similar fibres of several laboratory mammals studied previously.