Diminished muscle strength may be an independent risk factor for osteoporosis.
Why this matters
- The loss of muscle mass and strength may play a role in osteoporosis.
- The elderly may experience a faster loss of muscle strength than muscle mass.
- Such strength may correlate with mortality and hospitalization, suggesting it may be a more important intervention target than lean body mass.
- The relationships among grip strength, muscle mass, and osteoporosis in the elderly are unclear.
- Grip strength, but not muscle mass, decreased significantly with age.
- Participants with lower grip strength were likelier to have osteoporosis (unadjusted, P=.007; adjusted for age, sex, and other variables, P=.023).
- Muscle mass did not correlate with osteoporosis in either unadjusted or a fully adjusted model (unadjusted, P=.843; adjusted, P=.205).
- Cross-sectional study of 516 men and 652 women, all suburban Chinese ≥60 y old, who underwent assessments of performance, grip strength, muscle mass, and fat mass, as well as bone mineral density with quantitative ultrasound.
- Funding: None disclosed.
- Causal relationships cannot be derived from the study design.
- Bedridden individuals not included.