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Relationship between bioelectrical impedance-derived muscle quality and physical activity, sedentary behavior, or
Yujiro Asano1,2,3, Motohiko Miyachi2,4, Hinako Nanri5,6
1Doctoral Program in Physical Education, Health and Sport Science, Degree Programs in Comprehensive Human Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305- 8574, Ibaraki, Japan.
Higher moderate-to-vigorous physical activity (MVPA) is linked to better muscle quality. Replacing sedentary behavior, light activity, or sleep with MVPA may improve muscle quality indicators, even for non-regular exercisers.
Area of Science:
- Exercise Physiology
- Biophysics
- Gerontology
Background:
- The relationship between daily movement patterns and muscle quality is not fully understood.
- Muscle quality assessment using bioelectrical impedance spectroscopy (BIS) offers insights into cellular properties.
Purpose of the Study:
- To investigate the association between 24-hour movement behaviors (physical activity, sedentary behavior, sleep) and muscle quality.
- To explore the impact of reallocating time among movement behaviors on muscle quality.
Main Methods:
- Cross-sectional study of 294 participants.
- Objective measurement of physical activity and sedentary behavior via accelerometry.
- Subjective assessment of sleep duration and muscle quality via BIS.
Main Results:
- Longer moderate-to-vigorous physical activity (MVPA) duration was significantly associated with improved muscle quality indicators.
- Shifting 30 minutes from sedentary behavior, light physical activity, or sleep to MVPA correlated with 0.5-3.8% higher muscle quality indices.
- These associations were consistent across regular and non-regular exercisers.
Conclusions:
- Greater daily MVPA is associated with a more favorable muscle quality profile.
- MVPA is crucial for maintaining and potentially enhancing muscle quality, as measured by BIS electrical properties.
