Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr.

  title={Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr.},
  author={Ian Janssen and Steven B. Heymsfield and Z. M. Wang and Robert Ross},
  journal={Journal of applied physiology},
  volume={89 1},
We employed a whole body magnetic resonance imaging protocol to examine the influence of age, gender, body weight, and height on skeletal muscle (SM) mass and distribution in a large and heterogeneous sample of 468 men and women. Men had significantly (P < 0.001) more SM in comparison to women in both absolute terms (33.0 vs. 21.0 kg) and relative to body mass (38.4 vs. 30.6%). The gender differences were greater in the upper (40%) than lower (33%) body (P < 0.01). We observed a reduction in… 

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