Sample size considerations in human muscle architecture studies.
Sample size considerations in human muscle architecture studies.
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DOI:
10.1002/mus.23283
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发表时间:
2012-05
期刊:
影响因子:
3.4
通讯作者:
Lieber, Richard L.
中科院分区:
文献类型:
--
作者:
Tuttle, Lori J.;Ward, Samuel R.;Lieber, Richard L.
This report is a meta-analysis of the human muscle architecture literature that analyzes the number of muscles, number of subjects, and muscle fiber length coefficient of variation (CV) by body region. Muscle fiber length data are used to make recommendations for dissection-based architectural study sample sizes. An average of 9 ± 10 (mean ± SD) muscles and an average of 9 ± 5 subjects were reported in the 26 studies considered. Across all studies, average fiber length CV was highly variable (18% ± 5%). This shows that sample sizes required to achieve adequate power varies by anatomical region. Studies involving muscle architecture should consider regional variability and effect size and determine sample size accordingly.
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