文章基本信息

标题：Individual Variation in Myofiber Type Composition in the Triceps Surae and Flexor Digitorum Superficialis Muscles of Japanese Macaques
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作者：ATSUSHI SUZUKI ; SUGIO HAYAMA
期刊名称：Anthropological Science
印刷版ISSN：0918-7960
电子版ISSN：1348-8570
出版年度：1994
卷号：102
期号：Supplement
页码：127-138
DOI：10.1537/ase.102.Supplement_127
语种：English
出版社：The Anthropological Society of Nippon
摘要：Individual variation in composition of myofiber types (SO, FOG, and FG) was examined in the m. triceps surae and m. flexor digitorum superficialis of male and female Japanese macaques. The m. soleus generally had more SO myofibers than FOG and FG myofibers. The m. gastrocnemius and m. flexor digitorum superficialis had more FG myofibers than the other myofiber types. No sex-related differences in composition of myofiber types were noted in the muscles. Great differences in myofiber type percentages existed among the animals. The proportion of SO myofibers ranged from 32.8 to 95.9% in the m. soleus, from 8.1 to 50.5% in the m. gastrocnemius caput mediale, from 6.5 to 43.8% in the caput laterale, and from 3.2 to 44.7% in the m. flexor digitorum superficialis. Interindividual differences in myofiber type composition may be determined partially by genetic factors and be due partially to differences in capacity for changing myofiber types to meet postural or locomotory requirements.
关键词：individual variation;Japanese macaque;leg muscle;myofiber type;myofiber type composition