Identifying Individuals at Risk of Functional Decline Despite Preserved Muscle Mass: Insights from Appendicular Skeletal Muscle Mass and Handgrip Strength Discordance

Although ASM and HGS are strongly correlated in Korean adults, clinically meaningful discordance exists in a substantial subset, revealing heterogeneity in muscle quality not captured by muscle mass alone. Excess adiposity and aging are major determinants of this discordance.