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KMID : 0607720090200030285
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Journal of Korean Community Nursing
2009 Volume.20 No. 3 p.285 ~ p.295
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A Meta Analysis on the Effects of Exercise on Bone Mineral Density among Middle-aged and Older Women
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Yoo Ji-Soo
Park Jee-Won
Lee Suk-Jeong
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Abstract
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Purpose: This study was to examine the effectiveness of exercise for bone mineral density (BMD).
Methods: Four investigators reviewed English articles from Pub Med and CINAHL, selecting randomized controlled trials on exercise programs for middle-aged and older women. Out of 25 studies identified, 14 that satisfied with the inclusion criteria were included in the meta-analysis. The quality of the studies was assessed using recognized methods and the effect size was calculated as a Hedges’ g using Comprehensive Meta-analysis Version 2.0. Primary outcomes were changes in BMD at femoral neck, trochanter, and lumbar spine. Subgroup analysis included changes in BMD according to exercise style.
Results: Weight bearing exercise was effective (Q = 20.1, p > .05, ES = 0.32), and resistance exercise was effective in case of comparing to pre and post intervention (Q = 4.15, p = .98, ES = 0.14). At the femoral neck, 9 study groups were homogeneous and the experimental groups demonstrated a positive effect on BMD (Q = 19.5, p > .05, ES = 0.33). In contrast, marked heterogeneity (Q = 33.3, p < 0.01) was apparent in 7 study groups evaluating trochanter.
Conclusion: These findings suggest that weight bearing is effective for BMD of the femoral neck, and is relevant to the non-pharmacological treatment of bone loss for middle-aged and older women.
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KEYWORD
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Meta-analysis, Exercise, Osteoporosis, Middle aged, Women
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