Oral Contraceptives and Exercise
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Citation:The Ohio Journal of Science. v80, n1 (January, 1980), 3-7
Twelve college women, 5 naturally cycling and 7 on oral contraceptives, participated in a study to determine if oral contraceptives have an effect on selected hematologic and metabolic variables. The women worked at 2 workloads on a bicycle ergometer: 50% and 90% of their maximal aerobic capacity during 3 phases of the menstrual cycle, post mensus, ovulation, and mid-luteal. Within group differences were examined to determine if one time of the month was more suitable for doing submaximal or near maximal work, and between group differences were examined to determine the effects of oral contraceptives. Within the 2 groups, there were no significant differences for any variables. Between group differences were associated with higher heart rate and ventilation values for the women on oral contraceptives when the workloads were near maximal.
Author Institution: Department of Biology, University of Akron