H.H. Morris Human Performance Laboratories, Department of Kinesiology, School of Public Health, Indiana University, Bloomington, IN.
School of Public Health, Sackler Faculty of Medicine and Sylvan Adams Sports Institute, Tel Aviv University, Tel Aviv, ISRAEL.
Med Sci Sports Exerc. 2021 Feb 1;53(2):442-452. doi: 10.1249/MSS.0000000000002464.
This study aimed to test the hypothesis that aerobic exercise performance is impaired in the midluteal (ML) compared with the midfollicular (MF) phase of the menstrual cycle.
Twelve recreationally active eumenorrheic women (25 ± 6 yr) completed exercise sessions during the MF and the ML phases. Each session consisted of an 8-km cycling time trial that was preceded by 10 min of cycling performed at a constant power below and above gas exchange threshold. Heart rate, ventilation, and oxygen uptake were continuously measured. RPE and ratings of fatigue were assessed during the time trial using visual analog scales. Total mood disturbance was calculated from the POMS questionnaire administered before and 20 min postexercise.
Salivary progesterone concentration was 578 ± 515 pg·mL-1 higher in ML compared with MF phase (P < 0.01), whereas estradiol concentration did not differ between phases (167 ± 55 vs 206 ± 120 pg·mL-1, P = 0.31). Total mood disturbance before exercise was greater during the ML phase compared with the MF phase (P < 0.01), but this difference was abolished postexercise (P = 0.14). Mean power output was lower during the ML phase (115 ± 29 vs 125 ± 28 W, P < 0.01), which led to a slower time trial in the ML phase (18.3 ± 2.0 min) compared with the MF phase (17.8 ± 1.7 min, P = 0.03). Ratings of fatigue were greater during the ML phase from 2 to 8 km (P ≤ 0.01), whereas no differences in RPE were observed. Heart rate (P = 0.85), minute ventilation (P = 0.53), and oxygen uptake (P = 0.32) did not differ between phases during the time trial.
Aerobic exercise performance is worse in the ML phase compared with the MF phase in recreationally active women, which was accompanied by a more negative mood state preexercise and increased ratings of fatigue.
本研究旨在验证有氧运动表现在月经周期的黄体中期（ML）较卵泡中期（MF）更差的假设。
12 名有规律运动的月经正常女性（25±6 岁）分别在 MF 和 ML 期完成运动测试。每个测试由 8km 踏车计时赛组成，在此之前有 10min 以低于和高于气体交换阈值的恒定功率踏车运动。连续测量心率、通气量和摄氧量。在计时赛期间使用视觉模拟量表评估 RPE 和疲劳评分。总情绪困扰通过运动前和运动后 20min 进行的 POMS 问卷计算得出。
与 MF 期相比，ML 期唾液孕酮浓度高 578±515pg·mL-1（P＜0.01），而雌二醇浓度在两个时期没有差异（167±55 与 206±120pg·mL-1，P=0.31）。运动前总情绪困扰在 ML 期比 MF 期更大（P＜0.01），但这种差异在运动后消失（P=0.14）。平均功率输出在 ML 期较低（115±29 与 125±28W，P＜0.01），这导致 ML 期的计时赛较慢（18.3±2.0min）与 MF 期（17.8±1.7min，P=0.03）。从 2 公里到 8 公里，ML 期的疲劳评分更高（P≤0.01），而 RPE 没有差异。在计时赛期间，心率（P=0.85）、分钟通气量（P=0.53）和摄氧量（P=0.32）在两个时期没有差异。
在有规律运动的女性中，与 MF 期相比，ML 期的有氧运动表现更差，这伴随着运动前更消极的情绪状态和更高的疲劳评分。
