Evaluation of body composition and basal metabolic rate after acute exercise in menstrual phases in sportswomen

摘要

Aim. In this study, we aimed to investigate the possible changes of body composition and basal metabolic rate in three phases of menstrual cycle by means of BIA technique in sportswomen. Method. We included twenty female students who are 19.8 ± 1.7 years of age, 1.7 ± 5.2 m tall and 53.7±5.5 kilograms of weight. The participants were all students at sport academy. The participants had normal and regular menstrual cycle (28 ± 2 days). Astrand's maximal bicycle ergometry test was applied to all of the participants. The body ergometry test was initiated by 50 watt and it was terminated with the top figure exhaustive point. TAN?TA's TBF-300 body composition analizator was used and body mass index (BMI), basal metabolic rate (BMR), body mass fat, fat free mass (FFM), total body water (TBW) and total body fat percent (fat %) were analysed for each participant. Blood pressure, pulse and bioelectrical impedance (BIA) were measured just before and after exercises. Results . That there were no differences among the three phases of menstrual cycle regarding BMR measured just before and after exercises. We found that, BIA was high and TBW was low in luteal phase and FFM was decreased in follicular phase before exercise. BIA was increased after exercise in luteal phase. In early follicular phase FFM and TBW increased and body mass fat and fat % was decreased after exercise Although fat mass increased, BIA and fat % decreased just after the exercises in luteal phase. Conclusion . We think that the differences for body composition and BIA are because of TBW with menstrual cycle hormonal changes.