Analysis of peripheral muscle function in physically active elderly women: correlations with functional autonomy

Abstract

Introduction: Despite the reduction in muscle performance is a major factor contributing to the reduction of functional capacity, there are little evidence on the relationship between both muscular fatigue and strength, and the functional autonomy of the elderly. Objective: The objective of this study was to evaluate the association between peripheral muscle function and functional independence of elderly women participating in a regular exercise program. Methods: In a cross-sectional study, 29 elderly participating in a regular exercise program were evaluated for muscle strength (MVIC-isometric quadriceps dynamometry), fatigue (analysis of the EMG signal during sustained isometric quadriceps contraction) and functional autonomy (GDLAM Protocol). Results: Significant associations were observed between height and MVIC (r = 0.49, p = 0.007), age and GDLAM (r = 0.65, p <0.001), and GDLAM and MVIC (r =- 0.39, p = 0.045). Conclusion: Lower limb muscle strength and age are associated with functional autonomy of elderly healthy women participants in a regular exercise program.