There are multiple definitions:

1. biceps femoris muscle(English)

   • CPN, CPNe, LGCM, LHBFM, SHBFM
   • Anatomy, Myocyte / muscle
   • https://doi.org…55/2020/3093874

2. body fat mass(English)

   • increases in boys, peaking at approximately 11 years of age. Girls display a different pattern of age-related changes in BFM compared to that in boys
   • BIA, FFM, SMM
   • Adiposity, Gender aspects, Pediatrics, Impedance/bioimpedance
   • https://doi.org…children8050366