Distribution of different fiber types in human skeletal muscles: why is there a difference within a fascicle?
The proportions of different fiber types (type 1 and type 2) on the borders of fascicles are shown to differ from the proportions internally. This finding is based on the analysis of a total of 245 fascicles from whole cross-sections of the vastus lateralis muscle from 13 men, aged from 26-80 years. Generally, the difference is more marked in the young than in the old. It is argued that the causes of this difference are likely to be local factors in the muscle.
D000251:Adenosine Triphosphatases / Q000378:metabolism; D000328:Adult; D000367:Age Factors; D000368:Aged; D001699:Biometry; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000033:anatomy & histology* / Q000201:enzymology / Q000294:innervation; D009210:Myofibrils / Q000201:enzymology
D000251:Adenosine Triphosphatases