Roditi Elmina-Eleftheria, Tsatalas Themistoklis, Sakkas Giorgos K, Koutedakis Yiannis, Giakas Giannis, Karatzaferi Christina
Experimental Physiology-CREHP, Department PE & Sports Science, University of Thessaly, Karyes, 42100 Trikala, Greece.
Biomechanics and Ergonomics-CREHP, Department PE & Sports Science, University of Thessaly, Karyes, 42100 Trikala, Greece.
J Funct Morphol Kinesiol. 2024 Jun 29;9(3):115. doi: 10.3390/jfmk9030115.
It is generally accepted that local muscular fatigue can negatively affect position sense. Interestingly, it has been proposed that in women, position sense and neuromuscular coordination may be affected by fluctuations of estrogen and progesterone levels. The aim of this study was to examine the possible effect of localized muscle fatigue on knee joint position sense at two phases of the menses: follicular and luteal. Twenty physically active females aged 19-30 years, with normal menses, volunteered for this study. An isokinetic dynamometer was used to evaluate proprioception and perform the fatigue protocol of the knee extensors and flexors. Knee proprioception at rest and after fatigue at three knee target angles (30°, 45°, 60°) was measured. A three-way ANOVA analysis with repeated measures was performed. The results showed that the main effect of fatigue was significant, but no main effect of the menstrual cycle phase was found. Additionally, a main effect was found for the target angle (more flexed target knee joint angles were associated with larger angular error deviations). In conclusion, localized muscle fatigue can significantly reduce the accuracy of active knee joint repositioning in both the luteal and the follicular menstrual phases in young, physically active healthy women.
一般认为，局部肌肉疲劳会对位置觉产生负面影响。有趣的是，有人提出，在女性中，位置觉和神经肌肉协调性可能会受到雌激素和孕激素水平波动的影响。本研究的目的是在月经周期的两个阶段：卵泡期和黄体期，研究局部肌肉疲劳对膝关节位置觉的可能影响。20名年龄在19 - 30岁、月经周期正常、身体活跃的女性自愿参与本研究。使用等速测力计评估本体感觉，并对膝伸肌和屈肌进行疲劳测试。测量了三个膝关节目标角度（30°、45°、60°）在休息时和疲劳后的膝关节本体感觉。进行了重复测量的三因素方差分析。结果表明，疲劳的主效应显著，但未发现月经周期阶段的主效应。此外，发现目标角度存在主效应（目标膝关节角度越屈曲，角度误差偏差越大）。总之，在年轻、身体活跃的健康女性中，局部肌肉疲劳会显著降低黄体期和卵泡期主动膝关节重新定位的准确性。
