Substrate Responses to Submaximal Exercise in the Midfollicular and Midluteal Phases of the Menstrual Cycle

摘要: This study examined substrate metabolism responses of eumenorrheic women to different intensities submaximai exercise at the midfollicular (MF) and midluteal (ML) phases menstrual cycle. Nine performed a 30-min treadmill run in which intensity was made more difficult every 10 min (35%, 60%, 75%). Carbohydrate (CHO) utilization oxidation rates for 35% 60% during ML session were significantly lower than comparable MF. Conversely, lipid greater MF session. At 75%, however, CHO-lipid not from one another. Thus, phase cycle does influence metabolic usage low- moderate-intensity exercise, probably due changes endogenous levels female sex hormones.