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Int J Sports Med 1986; 07(5): 246-249
DOI: 10.1055/s-2008-1025768
© Georg Thieme Verlag Stuttgart · New York

Accuracy of an Anthropometric Estimate of the Muscle and Bone Area in a Transversal Cross-Section of the Arm

F. L. de Koning1 , R. A. Binkhorst1 , J. M. G. Kauer2 , H. O. M. Thijssen3
  • 1Department of Physiology, University of Nijmegen, The Netherlands
  • 2Department of Anatomy and Embryology, University of Nijmegen, The Netherlands
  • 3Department of Neuro Radiology, University of Nijmegen, The Netherlands
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Publication Date:
14 March 2008 (online)

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Abstract

To standardize the maximal static force (FO) of the arm flexors, the accuracy of an anthropometric method for estimating the mid-arm cross-sectional muscle and bone area (MBA) was investigated. This was done by comparing the anthropometrically determined area (MBA.A) with the area measured by means of computerized tomography (MBA.S). In the same way, the accuracy of Heymsfield's equations (Heymsfield et al., 1982) for predicting MBA (MBA.H) from anthropometric measures was tested. MBA.A was significantly larger than MBA.S, the relative difference increasing with the thickness of the subcutaneous fat layer. This difference was attributed to a 27% underestimation of the fat layer thickness as measured with the skinfold caliper. Women being fatter than men, this caused the standardized maximal static force (FO /MBA) to be lower in women than in men. MBA.H was 12% smaller than MBA.S. This may have been due to a difference in the way of measuring the arm circumference between the present authors and Heymsfield et al.

Key words

muscle area - CT scan - anthropometry