مقايسه تاثير نوع فعاليت ورزشي بر پاسخ هاي قلبي-عروقي و تنفسي در مراحل لوتئال و ابتداي فوليكولار چرخه قاعدگي زنان ورزشكار و غيرورزشكار

Effect of mode of exercise on pulmonary and cardiovascular responses in early follicular and luteal phases of active and inactive females9 menstrual cycle

The aim of this study was to compare the effect of mode of exercise on pulmonary and cardiovascular responses to progressive intensity exercise during the early follicular and luteal phases of the menstrual cycle. Twenty healthy, trained women volunteered to participate in the study. The inactive group included of 20 students who didnʹt taken part in any regular physical activities. Each group of participants was randomly classified into two equal groups (treadmill; T and cycle ergometer; CE). An incremental graded exercise test (GXT) was conducted on a cycle ergometer (Astrand test) and treadmill (Bruse test) in the early follicular and luteal of menstrual phases until they were unable to continue. The participant performed an incremental bout of exercise on T and CE during their early follicular and luteal phases until they were exhausted. The luteal phase was determined by the level of progesterone, prolactin, FSH and LH hormones in serum samples. The pulmonary gas analyzer (K4B2) was applied to measure, oxygen pulse (V02/HR) in two phases. T-tests were performed to detect baseline differences across menstrual phases by mode of exercise. The results indicated no significant differences in maximal V02/HR across the menstrual cycle of active and inactive females. Additionally, the differences among the average of V02/HR were significant in mode of exercise in the inactive group (p<0.05) and there was no difference in active group. It seems that because of the physical depression during menstrual cycle, which is due to the female inactivity, the replacement of running with cycling, with the aim of making physical activity simpler and encouraging female to continue their activity during this time, is not recommendable in active female.