The Differences between functionality status and muscle quality in older women

Abstract

disability. This study aimed to investigate the relationship between bioelectrical impedance analysis (BIA) and functional
testing in older women, emphasizing the importance of combining functional and strength assessments for a comprehensive
evaluation of muscle quality.
Methods: The study involved 55 older women divided into two groups based on their performance in the 30-Second Chair
Stand Test (30CST): Group 1 (≥15 repetitions) and Group 2 (<15 repetitions). Muscle strength (knee extensors and flexors),
handgrip strength and body composition parameters were assessed.
Results: Statistically significant differences were observed between groups for knee extensors and flexors strength, back
flexors strength, and handgrip strength (P< .05). Group 2 demonstrated weaker knee flexors, extensors and handgrip strength.
BIA parameters revealed higher body fat mass and soft lean mass in Group 2 (P< .05). However, no significant differences
were found in limb-specific lean mass normalized to height (L S.L.M./height²). The findings highlighted the inadequacy of
BIA alone in assessing muscle quality and the importance of functional testing.
Conclusions: Assessing muscle quality in older women requires a combination of functional tests like 30CST, and lower
limb strength measurements. Functional training should be incorporated to enhance muscle quality and reduce the risk of
sarcopenia-related impairments.