Skeletal Muscle Mass Indices in Healthy Adults (original) (raw)

Nutrition and Skeletal Muscle, 2019

Abstract

Skeletal muscle (SM) is a key component of nutritional status and functionality. The adjustment of SM by height or other anthropometric parameters in young adults has generated several indices that serve as indicators of muscularity. These SM indices have been generated in distinct young adult populations around the world and are now the basis for diagnoses of sarcopenia. To our knowledge, 21 cutoff points based on SM exist for younger adult populations worldwide; specifically, 17 dual-energy X-ray absorptiometry (DXA)-derived appendicular skeletal muscle mass indices, 3 DXA-derived total SM indices (TSMI), and one DXA-derived total lean body mass index. In addition, there are seven indices derived from bioelectrical impedance analysis, one magnetic resonance imaging-derived TSMI, and one that uses an ultrasound technique. In conclusion, SM indices should be applied to specific gender and ethnic populations to avoid variations in estimates of the prevalence of sarcopenia in older pe...

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