Validation of Muscle Mass and Muscle Quality Assessment of Older Adults Who Need Support and Nursing Care Using a Home Body Composition Analyzer

Abstract

[Purpose] To verify the validity of muscle mass and muscle quality assessment by a home body composition analyzer. [Participants and Methods] Eighty-eight older adults who needed support or nursing care participated in this study. Skeletal muscle mass, the skeletal muscle mass index (SMI), and phase angle (PhA) of the left side of the body and limbs were measured using a professional body composition analyzer. Skeletal muscle mass, SMI, and muscle quality scores of the whole body and limbs were measured using a home body composition analyzer. The relationship between muscle mass and muscle quality indices between the two body composition analyzers was analyzed. [Results] Skeletal muscle mass showed high agreement (r=0.9). Correlation analysis of muscle quality indices showed significant low to moderate correlations for all indices. [Conclusion] Skeletal muscle mass measured by home body composition analyzers may be highly reliable.