Toward a sex-specific relationship between muscle strength and appendicular lean body mass index?
In spite of some dissociation between muscle mass and strength, muscle strength is often used as a proxy to identify individuals with low muscle mass (sarcopenia). Thus, the aim of the present study was to investigate the relationship between muscle strength and the appendicular lean body mass index (app LBMI).
One hundred and five individuals were recruited. Knee extension and handgrip strength were measured. Body composition was assessed by DXA. App LBMI was calculated as appendicular lean body mass divided by height squared.
At le level of the entire cohort, both handgrip (r = 0.73; p < 0.001) and knee extension strength (r = 0.57; p < 0.001) were associated with app LBMI. However, in women, knee extension strength (r = 0.32; p < 0.05) but not handgrip strength (r = 0.14; p = 0.35) was associated with app LBMI; while in men, handgrip strength (r = 0.43; p < 0.01) but not knee extension strength (r = 0.27; p = 0.09) was associated with app LBMI.
Muscle strength appears to be associated with lean body mass; however, handgrip strength may be preferentially used in men and knee extension strength in women to detect sarcopenic individuals. Future larger studies are now needed to confirm our findings and their clinical relevance.
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- Toward a sex-specific relationship between muscle strength and appendicular lean body mass index?
Journal of Cachexia, Sarcopenia and Muscle
Volume 4, Issue 2 , pp 137-144
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- Muscle mass
- Muscle strength
- Older adults
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- Author Affiliations
- 1. Département de Biologie, Université du Québec à Montréal, Montréal, QC, Canada
- 2. Groupe de Recherche en Activité Physique Adaptée, Université du Québec à Montréal, Montréal, QC, Canada
- 3. Institut Universitaire de Gériatrie de Montréal, Montréal, Canada
- 4. Département de Kinanthropologie, Université du Québec à Montréal, Montréal, QC, Canada
- 5. Department of Kinanthropology, Université du Québec à Montréal, Case postale 8888, Succursale Centre-Ville, Montreal, QC, Canada, H3C 3P8