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Calcium timing
The body must keep calcium levels in balance to maintain bone, and too much exercise can disturb this balance, depleting bone even in young, healthy men. In this study, 33 postmenopausal women took a sports-drink with a placebo or with 125 mg of calcium, an hour before, or 200 mg of calcium, 15 minutes before a one-hour-long brisk walk.

While the 15-minutes-before-exercise calcium group saw calcium levels decline, the one-hour-before-exercise calcium group maintained calcium levels and had better signs of bone formation. Doctors said the findings confirm earlier bone studies and suggest the timing of taking calcium before exercise plays an important bone-regulating role.

Reference: Medicine and Science in Sports and Exercise; 2014, Vol. 46, No. 10, 2007-13.
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