In normal postmenopausal women physiologic estrogen replacement therapy fails to improve exercise tolerance: a randomized, double-blind, placebo-controlled, crossover trial

Article Abstract:

Giving postmenopausal women estrogen does not appear to improve their capacity for exercise. It was thought that it might because studies suggest that estrogen replacement therapy may increase oxygen delivery or oxygen uptake by improving heart function and dilating blood vessels. Researchers randomly assigned 31 postmenopausal women to estrogen therapy or placebo for 12 weeks, followed by a break of six weeks, and then a further 12 weeks in the opposite group. Treadmill exercise studies failed to reveal any differences in heart rate, blood pressure response to exercise, or oxygen uptake with estrogen.

Health aspects, Evaluation, Hormone therapy, Estrogen, Estrogens

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Recreational exercise and occupational activity during pregnancy and birth weight: a case-control study

Article Abstract:

A baby's weight at birth seems to be partly determined by how much exercise the mother got during her third trimester. In a study of 529 pregnant women, low birth weight was associated with exercising less than twice a week or more than five times a week. Women who exercised three or four times a week had the highest birth weights.

Research, Behavior, Pregnant women, Birth weight

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Hemostatic responses to maximal exercise in oral contraceptive users

Article Abstract:

The body's ability to break down blood clots is slightly inhibited in women who take oral contraceptives, especially when they exercise. This may explain why oral contraceptives increase the risk of abnormal blood clotting.

Complications and side effects, Oral contraceptives, Fibrinolysis

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