Effects of eccentric jaw exercise on temporal summation in jaw‐closing muscles of healthy subjects
Effects of eccentric jaw exercise on temporal summation in jaw‐closing muscles of healthy subjects
复制标题
偏心下颌运动对健康受试者闭颌肌时间总和的影响
DOI：
10.1016/j.ejpain.2009.12.001
复制
发表时间：
2010
影响因子：
3.6
通讯作者：
L. Arendt
中科院分区：
文献类型：
--
作者：
T. Torisu;Kelun Wang;P. Svensson;A. Laat;Mihoko Tanaka;A. Shimada;A. Ikoma;H. Murata;L. Arendt
众所周知，偏心下颌运动可引起肌肉酸痛，但迄今为止还没有研究检查运动肌肉内的时间累积机制在多大程度上发生了变化。本研究的目的是探讨偏心咬合练习对颞统、机械压力敏感性和颌骨肌肉活动的影响。共有15名健康男性参加了两个阶段的实验：在一个阶段，他们进行了30分钟的控制偏心下颌运动，另一个阶段作为无运动的对照组。在休息时和最大咬合时的疼痛感觉、最大咬合时的压痛阈值（PPTs）和肌电图（EMG）活动记录在运动前（基线）、后（任务后）和运动后1天（1天后）。在基线和1天后，研究了使用肌内电刺激咬肌的时间总和比。在任务后和任务后1天，偏心下颌运动与疼痛感觉的显著增加和PPTs的降低有关。肌电活动和咬合力没有变化。在两次会议后1天，总比率显著下降。目前的研究结果表明，偏心下颚运动不会引起可检测的时间总和的变化。然而，总比值对于区分致敏部位可能具有临床应用价值。
Eccentric jaw exercises has been known to cause muscle soreness but no studies have so far examined to what extent temporal summation mechanisms within the exercised muscles are changed. The purpose of the present study was to investigate the effects of an eccentric biting exercise on the temporal summation, mechanical pressure sensitivity and jaw muscle activity.A total of 15 healthy men participated in a two‐session‐experiment: In one session, they performed 30 min controlled eccentric jaw exercise and the other session served as a no‐exercise control. Soreness sensations at rest and during maximal biting, pressure pain thresholds (PPTs) and electromyographic (EMG) activity during maximal jaw biting were recorded before (baseline), immediately after (Post‐task), and 1 day after the exercise (1‐day‐after). The temporal summation ratio using intra‐muscular electrical stimulation of the masseter was investigated at baseline and at 1‐day‐after. The eccentric jaw exercise was associated with significant increases in soreness sensation and decreased PPTs at Post‐task and at 1‐day‐after. The EMG activity and biting force did not change. The summation ratio was significantly decreased at 1‐day‐after in both sessions. The present findings demonstrate that eccentric jaw exercise does not induce detectable changes in temporal summation. However, the summation ratio may have clinical utility to differentiate the location of sensitization.
DOI：
--
发表时间：
1992
期刊：
Journal of craniomandibular disorders : facial & oral pain
影响因子：
--
作者：
S. Dworkin;L. Leresche
通讯作者：
S. Dworkin;L. Leresche
影响因子：
2.1
作者：
LUND, JP;DONGA, R;STOHLER, CS
通讯作者：
STOHLER, CS