This study investigated the
relationship between recreational physical activity (RPA) and breast cancer
risk in a population-based sample of 1504 cases (n = 233 in situ, n = 1271
invasive) and 1555 controls from the Long Island Breast Cancer Study Project,
in Long Island, New York. The results showed 10-19 hours per week of RPA
at any intensity level during the reproductive and postmenopausal
years has the greatest benefit for reducing breast cancer risk. However,
substantial postmenopausal weight gain may eliminate the benefits of regular
activity. The authors conclude "Collectively, these results suggest
that women can still reduce their breast cancer risk later in life by
maintaining their weight and engaging in moderate amounts of activity".
Note: 10-19 hours a week had the greatest benefit...we need to get out and play more!
McCullough LE, Eng SM, Bradshaw PT,
Cleveland RJ, Teitelbaum SL, Neugut AI, Gammon MD. Fat or fit: The joint
effects of physical activity, weight gain, and body size on breast cancer risk.
Cancer. 2012 Jun 25. [Epub ahead of print]
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