建议性激素影响能量摄入(EI)和代谢激素。这项研究调查了月经周期(MC)和激素避孕(HC)周期对EI的影响,能源可用性(EA),和休闲运动员的代谢激素(eumenrhypic,NHC=15,单相HC用户,CHC=9)。此外,除了血液样本外,还收集了72小时的饮食和训练日志,分析了17β-雌二醇(E2),孕酮(P4),瘦素,总生长素释放肽,胰岛素,和三碘甲状腺原氨酸(T3)。在四个时间点(阶段)完成测量:出血,在NHC/CHC中,卵泡中期(FP)/活跃1,排卵(OVU)/活跃2,黄体中期(LP)/不活跃,分别。不出所料,E2和P4在NHC中波动显著(p<0.05),在CHC中保持稳定。在NHC,瘦素在出血和排卵之间(p=0.030)以及FP和OVU之间(p=0.022)显着增加。在整个MC和HC周期中未观察到其他测量激素的组差异。阶段之间的平均EI和EA相似,与MC或HC相比,大量营养素的摄入量没有显着差异。虽然MC阶段可能有一个小的,但对瘦素有统计学意义的影响,本研究的结果表明,在休闲运动员中,MC或HC阶段并没有显著的随意改变EI或EA.
Sex hormones are suggested to influence energy intake (EI) and metabolic hormones. This
study investigated the influence of menstrual cycle (MC) and hormonal contraceptive (HC) cycle phases on EI, energy availability (EA), and metabolic hormones in recreational athletes (eumenorrheic, NHC = 15 and monophasic HC-users, CHC = 9). In addition, 72-h dietary and training logs were collected in addition to blood samples, which were analyzed for 17β-estradiol (E2), progesterone (P4), leptin, total ghrelin, insulin, and tri-iodothyronine (T3). Measurements were completed at four time-points (phases): Bleeding, mid-follicular (FP)/active 1, ovulation (OVU)/active 2, mid-luteal (LP)/inactive in NHC/CHC, respectively. As expected, E2 and P4 fluctuated significantly in NHC (p < 0.05) and remained stable in CHC. In NHC, leptin increased significantly between bleeding and ovulation (p = 0.030) as well as between FP and OVU (p = 0.022). No group differences in other measured hormones were observed across the MC and HC cycle. The mean EI and EA were similar between phases, with no significant differences observed in macronutrient intake over either the MC or HC. While the MC phase might have a small, but statistically significant effect on leptin, the findings of the present
study suggest that the MC or HC phase does not significantly alter ad libitum EI or EA in recreational athletes.