Efficacy Of Calcium Supplementation And Weightbearing Exercise On Bone Mineral Density In Postmenopausal Chinese Women
Chan, Yoke Mun (2003) Efficacy Of Calcium Supplementation And Weightbearing Exercise On Bone Mineral Density In Postmenopausal Chinese Women. PhD thesis, Universiti Putra Malaysia.
The etiology of age-related bone loss is unclear but both habitually low calcium intake and lack of physical activity have been proposed as its determinants. The objective of this two-year randomized controlled trial was to evaluate the efficacy of increasing calcium intake and weight-bearing exercise on bone mineral density (BMD) in postmenopausal Chinese women who were not on hormone replacement therapy. Bone mineral density at the total body, lumbar spine L2-L4, femoral neck, Ward's triangle, trochanter and total hip were measured using dual energy X-ray absorptionmetry (DEXA) at six month intervals. Information on sociodemographic background, lifestyle factors and reproductive history were assessed using a validated questionnaire. Calcium intake was evaluated by both the three-day food record and food frequency questionnaire at baseline, 1 2 and 24 months. Exercise habits were assessed with an exercise diary and Physical Activity Scale for the Elderly (P ASE) questionnaire.
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