Hoeger Bement Marie K, Rasiarmos Rebecca L, DiCapo John M, Lewis Audrey, Keller Manda L, Harkins April L, Hunter Sandra K
Department of Physical Therapy, Marquette University, Milwaukee, WI 53201, USA.
Eur J Appl Physiol. 2009 May;106(1):105-12. doi: 10.1007/s00421-009-0995-8. Epub 2009 Feb 3.
The purpose of this study was to compare exercise-induced analgesia in young women after a fatiguing isometric contraction during different phases of the menstrual cycle. Twenty female subjects performed a submaximal (25% maximal voluntary contraction) isometric contraction until task failure during both the mid-follicular and mid-luteal phases of their menstrual cycle. Pain perception (i.e., pain threshold and pain ratings) was measured before and after the isometric fatiguing contraction. Other measures included mean arterial pressure, heart rate, and anxiety levels. Time to task failure of the fatiguing contraction was similar for the two phases of the menstrual cycle. Following the performance of the isometric contraction: (1) pain thresholds increased and pain ratings decreased; (2) anxiety levels increased; and (3) mean arterial pressure and heart rate increased. These changes were not dependent on the phase of the menstrual cycle. Thus, the menstrual cycle phase does not influence the magnitude of exercise-induced analgesia.
本研究的目的是比较年轻女性在月经周期不同阶段进行疲劳性等长收缩后运动诱导的镇痛效果。20名女性受试者在月经周期的卵泡期中期和黄体期中期进行次最大强度（最大自主收缩的25%）等长收缩，直至任务失败。在等长疲劳收缩前后测量疼痛感知（即痛阈和疼痛评分）。其他测量指标包括平均动脉压、心率和焦虑水平。月经周期的两个阶段疲劳收缩至任务失败的时间相似。进行等长收缩后：（1）痛阈升高，疼痛评分降低；（2）焦虑水平升高；（3）平均动脉压和心率升高。这些变化不依赖于月经周期阶段。因此，月经周期阶段不影响运动诱导镇痛的程度。
Zotero 插件