Yassin Marzieh, Talebian Saeed, Ebrahimi Takamjani Ismail, Maroufi Nader, Ahmadi Amir, Sarrafzadeh Javad, Emrani Anita
PhD student, Physical Therapy Department, Rehabilitation Faculty, Tehran University of Medical Sciences, Tehran, Iran.
Professor, Physical Therapy Department, Rehabilitation Faculty, Tehran University of Medical Sciences, Tehran, Iran.
Med J Islam Repub Iran. 2015 Nov 16;29:295. eCollection 2015.
Myofascial pain syndrome is a significant source of mechanical pain. The aim of this study was to investigate the effects of arm movement on reaction time in females with latent and active upper trapezius myofascial trigger point.
In this interventional study, a convenience sample of fifteen women with one active MTP, fifteen women with one latent MTP in the upper trapezius, and fifteen normal healthy women were participated. Participants were asked to stand for 10 seconds in an erect standing position. Muscle reaction times were recorded including anterior deltoid (AD), cervical paraspinal (CP) lumbar paraspinal (LP), both of upper trapezius (UT), sternocleidomastoid (SCM) and medial head of gastrocnemius (GcM). Participants were asked to flex their arms in response to a sound stimulus preceded by a warning sound stimulus. Data were analyzed using one-way ANOVA Test.
There was significant differences in motor time and reaction time between active and control groups (p< 0.05) except for GcM. There was no significant difference in motor time between active and passive groups except for UT without MTP and SCM (p< 0.05). Also, there were no significant differences in motor times between latent MTP and control groups. Furthermore, there was no significant difference in premotor times between the three groups.
The present study shows that patients with active MTP need more time to react to stimulus, but patients with latent MTP are similar to healthy subjects in the reaction time. Patients with active MTP had less compatibility with environmental stimulations, and they responded to a specific stimulation with variability in Surface Electromyography (SEMG).
肌筋膜疼痛综合征是机械性疼痛的一个重要来源。本研究的目的是调查手臂运动对患有潜在性和活动性上斜方肌肌筋膜触发点的女性反应时间的影响。
在这项干预性研究中，纳入了便利样本，包括15名患有一个活动性肌筋膜触发点的女性、15名上斜方肌有一个潜在性肌筋膜触发点的女性以及15名正常健康女性。参与者被要求直立站立10秒。记录包括三角肌前部（AD）、颈旁肌（CP）、腰旁肌（LP）、双侧上斜方肌（UT）、胸锁乳突肌（SCM）和腓肠肌内侧头（GcM）的肌肉反应时间。要求参与者在听到警告声刺激后，对声音刺激做出屈臂反应。使用单因素方差分析测试对数据进行分析。
除GcM外，活动组和对照组之间的运动时间和反应时间存在显著差异（p<0.05）。除无肌筋膜触发点的UT和SCM外，活动组和被动组之间的运动时间无显著差异（p<0.05）。此外，潜在性肌筋膜触发点组和对照组之间的运动时间也无显著差异。此外，三组之间的运动前时间无显著差异。
本研究表明，患有活动性肌筋膜触发点的患者对刺激做出反应需要更多时间，但患有潜在性肌筋膜触发点的患者在反应时间上与健康受试者相似。患有活动性肌筋膜触发点的患者与环境刺激的协调性较差，并且他们对特定刺激的表面肌电图（SEMG）反应存在变异性。
