Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
School of Environmental and Life Sciences, The University of Newcastle, Ourimbah, NSW 2258, Australia.
Int J Environ Res Public Health. 2021 Oct 9;18(20):10565. doi: 10.3390/ijerph182010565.
Most reproductive-aged women are exposed to fluctuating female steroid hormones due to the menstrual cycle or oral contraceptive use. This study investigated the potential effect of the menstrual cycle and combined monophasic oral contraceptive cycle on various aspects of muscle performance. Thirty active females (12 with a natural menstrual cycle, 10 taking a high-androgenicity oral contraceptive and 8 taking a low-androgenicity oral contraceptive), aged 18 to 30 years, were tested three times throughout one menstrual or oral contraceptive cycle. Counter-movement jumps, bilateral hop jumps, handgrip strength, isometric knee extensor strength and isokinetic knee flexion and extension were assessed. Perceptual ratings of fatigue, muscle soreness, pain and mood were recorded. Most variables showed no significant changes over the menstrual or oral contraceptive cycle. However, for the menstrual cycle group, isokinetic knee flexion at 240° s, and time of flight in bilateral hopping and counter movement jumps showed better results during the mid-luteal phase compared with the late follicular phase. For the high-androgenicity oral contraceptive group, isokinetic knee flexion at 240° s was significantly higher in the late hormone phase compared with the early hormone phase. For the low-androgenicity oral contraceptive group, time of flight for the counter-movement jumps was lower in the late hormone phase compared with the early hormone phase. The findings indicate that faster and explosive aspects of muscle performance may be influenced by endogenous and exogenous female hormones.
大多数处于生育年龄的女性由于月经周期或口服避孕药的使用而暴露于波动的女性类固醇激素中。本研究调查了月经周期和单相口服避孕药周期对肌肉性能各个方面的潜在影响。30 名活跃的女性(12 名自然月经周期,10 名服用高雄激素避孕药,8 名服用低雄激素避孕药),年龄在 18 至 30 岁之间,在一个月经周期或口服避孕药周期内接受了三次测试。测试内容包括反跳式跳跃、双侧单足跳跃、握力、等长膝关节伸展力量和等速膝关节屈伸力量。还记录了疲劳、肌肉酸痛、疼痛和情绪的感知评级。大多数变量在月经周期或口服避孕药周期中没有明显变化。然而,对于月经周期组,在黄体中期,双侧跳跃和反跳式跳跃的 240°/s 等速膝关节屈曲以及飞行时间显示出比卵泡晚期更好的结果。对于高雄激素避孕药组,在黄体后期,240°/s 的等速膝关节屈曲明显高于激素早期。对于低雄激素避孕药组,反跳式跳跃的飞行时间在激素后期比激素早期低。研究结果表明,肌肉性能的更快和爆发力方面可能受到内源性和外源性女性激素的影响。
Int J Environ Res Public Health. 2021-10-9
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