Relationship between body composition and bone mineral density, related to physical activity, in elderly women

Background. Changes in body composition, including a decrease in muscle and bone mass, accompany aging. Objective. Analyse the influence of lean mass on bone mineral density, related to physical activity, in elderly women. Method. 37 women were included in this study via an osteoporosis consultation. Body composition and bone mineral density (BMD) measurements were performed using Dual-energy X-ray absorptiometry methodology (DXA). The BMD was measured at the femoral neck. Each participant had a physical activity test to respond and had to perform handgrip, a four meter walk and one leg balance. Results. Simple regression analyze showed a positive association between lean masse et BMD; after multiple linear regression analysis, we found a positive association between BMD, lean mass, and one leg balance; lean masse and one leg balance were two independent variable. Conclusion. Bone Mineral density was signicantly associated to lean mass and one leg balance.