在整个月经周期中被动腿部肌肉刚性和口服避孕药的效果
Jérémie Bouvier1, Mélanie Prudent2, Emeric Stauffer3
1Universite Claude Bernard Lyon 1, LIBM, Laboratoire Interuniversitaire de Biologie de la Motricité, UR 7424, UFR STAPS de Lyon, F-69622 Villeurbanne, France.
Journal of science and medicine in sport
|February 6, 2025
概括
女运动员在月经周期或使用口服避孕药时,腿筋肌肉力学没有变化. 荷尔蒙的波动没有影响肌肉的特性,如刚性或运动范围.
科学领域:
- 运动医学 运动医学
- 生物机械分析 生物机械分析
- 女性生理学 女生理学
背景情况:
- 女运动员的腿筋应变损伤率低于男性.
- 月经周期期间的荷尔蒙波动 (雌激素,孕) 和口服避孕药 (OC) 的使用可能会影响肌肉的机械特性.
- 之前的研究缺乏研究,这些研究结合了详细的腿筋机械性质评估,在全膝盖运动范围内与荷尔蒙控制,肌电图 (EMG) 和OC用户进行了详细的评估.
研究的目的:
- 严格评估月经周期,口服避孕药的使用和腿筋肌肉机械性质之间的关联.
- 调查荷尔蒙变化是否影响女性运动员腿筋肌肉机制.
- 这是第一个将全面的机械评估与这种人群中的荷尔蒙和EMG监测相结合的研究.
主要方法:
- 采用重复测量的横截面研究.
- 剪波弹性图 (SWE) 用于在月经周期和月经周期期间的三个时间点评估腿筋机械性质.
- 激素评估和电肌图 (EMG) 监测同时进行.
主要成果:
- 在腿筋剪切波速度,解剖截面面积,肌关节硬度或月经周期内的最大运动范围方面没有发现显著差异.
- 这些机械特性保持一致,尽管卵巢类固醇激素度的预期变化.
- 在使用口服避孕药时,没有观察到这些参数的差异.
结论:
- 腿筋肌肉的机械特性保持不变,无论月经周期期间卵巢类固醇激素水平的波动.
- 与自然周期变化相比,口服避孕药的使用不会改变腿筋肌肉的机械性质.
- 尽管已知荷尔蒙对肌肉构成的影响,但这些变化并没有转化为研究周期阶段的腿筋力学中可测量的差异.
相关概念视频
01:22Hormonal Regulation of the Menstrual Cycle
273
The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
273
01:18Menses Phase
210
The uterine cycle begins with the menstrual phase, which is considered day one of the cycle and typically lasts about five days. This phase is characterized by the degeneration and shedding of the stratum functionalis, the functional layer of the endometrium.
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
210
01:19The Menstrual Cycle
669
The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
669
01:22Birth Control Methods
173
Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although...
173
01:19Secretory Phase
488
The secretory phase of the menstrual cycle, spanning from day 14 to 28 in a typical 28-day cycle, is a period of significant physiological changes in the female reproductive system. This phase commences immediately after ovulation and is characterized by the preparation of the endometrium for potential embryo implantation.
Following ovulation, the corpus luteum, a temporary endocrine structure, produces progesterone and estrogens. These hormones stimulate the growth and coiling of endometrial...
Following ovulation, the corpus luteum, a temporary endocrine structure, produces progesterone and estrogens. These hormones stimulate the growth and coiling of endometrial...
488
01:30Hormonal Control of the Ovarian Cycle
393
The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
393