Strength training stops bone loss and builds muscle in postmenopausal breast cancer survivors: a randomized, controlled trial

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106 postmenopausal women who were breast cancer survivors were randomized to determine the effect of a resistance and impact training program on body composition and bone health. Participants were allocated to a 1-year intervention with either a training program, or a low-intensity stretching program. Outcomes were assessed after 1 year. The results indicated that women who participated in the training group preserved bone mineral density at the lumbar spine, compared to a decrease in the stretching group, and had a significantly greater decrease in deoxypyrodinoline (a bone degradation biomarker). There were no significant differences in body composition measurements, or bone mass measurements of the hip.