A revised equation for estimating thigh muscle and bone area from anthropometric dimensions

American Journal of Human Biology : the Official Journal of the Human Biology Council
Shigeho TanakaNozomu Machida

Abstract

The accuracy of an anthropometric equation for estimating thigh muscle and bone area (MBA) and fat area (FA) was examined in two groups of Japanese male university students, an athletic group (n = 31) and a non-athletic group (n = 18). The anthropometric equation examined included the anterior thigh skinfold (SFT) and thigh circumference (CF): (CF - π × SFT)(2) /4π. Actual MBA and FA were calculated by means of a computed tomography (CT) scan. The anthropometric equation overestimated MBA and underestimated FA, although the estimated values were strongly correlated with actual values. In addition, total thigh area was also overestimated by using thigh circumference. As MBA increased, the difference between estimated and actual MBA increased. Regression analysis using estimated MBA through an anthropometric equation was also done. The resulting equation was as follows: MBA = c1 × (CF - π × SFT)(2) /4π + c2, where the value of (CF - π × SFT)(2) /4π was the estimated MBA through the first anthropometric equation. The mean ratio of the residual to actual MBA was very small, 2.8% in the athletic group and 3.3% in the non-athletic group. When a non-linear model (MBA = (k1 × CF - k2 × π × SFT)(2) /4π + k3) was applied, the ratio was a...Continue Reading

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Citations

Jan 1, 1994·American Journal of Human Biology : the Official Journal of the Human Biology Council·Alex F Roche
Apr 24, 2001·Health Psychology : Official Journal of the Division of Health Psychology, American Psychological Association·C R ColderB R Flay

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