The associations among body composition, historical and recent physical activity, and bone status in postmenopausal women
Binkowski, Jessica Anne
MetadataShow full item record
The association between historical bone loading physical activity (PA) and bone mineral density (BMD) and the relative importance of lean soft tissue mass (LSTM) or fat mass (FM) as the primary independent predictor of BMD, controlling for historical or recent PA, has not been extensively studied in postmenopausal women. Women (n = 67, mean age 58.1 ± 3.9, range 49-65 years old) were assessed for PA habits subjectively via questionnaires and objectively using a pedometer. Bone status and body composition measured were assessed using dual-energy x-ray absorptiometry. No significant relationships were found between any reported historical PA and BMD although recent PA, measured either from self-report or step counts, were weakly related. LSTM, not FM or recent PA, was the only significant independent contributor to whole body and femoral neck BMD other than hormone replacement therapy when age and months in menopause were controlled.