Comparison of neck position sense balance control and forward reach performance between neck pain patients and pain-free controls

  • 花 湘樺

Student thesis: Master's Thesis


Background: The myofascial pain in the neck and shoulder regions are major cause of mechanical neck pain Prolonged awkward posture or inappropriate ergonomics may lead to neck myofascial pain with taut bands in muscles The neck proprioception is mainly controlled by the muscles with high density concentrations of muscle spindles The proprioceptive information from cervical region links to the whole body via a proprioceptive chain thus may have direct effect on balance or postural control Besides forward reach is composed of chin out and shoulder flexion and thus requires greater activation of neck extensors Therefore the forward reach test may challenge the ability of dynamic balance control in the neck pain patients The purpose of this study was to compare the neck tissue hardness pressure pain threshold neck position sense electromyography of neck muscles balance control and forward reach performance between the patients with mechanical neck pain and the healthy controls The other purpose is to discuss the relationship between neck position sense and balance control Methods: Twenty subjects with chronic neck pain (24 1 ± 3 4years 14F6M) and twenty age-matched healthy controls (23 7 ± 3 3years 14F6M) participated in this study The neck pain group received reproduced pain protocol by playing the tablet in sustained neck flexed posture The tissue hardness and pressure pain threshold were measured in neck pain group before and after pain-induced and in the controls Both groups were asked to perform the cervical kinesthetic sensibility test forward reach test and balance tasks There were twelve subjects with chronic neck pain performing the tests before pain-induced The neck proprioception test requires the subjects to relocate the neutral head position after active neck flexion extension left and right rotation with eyes closed The balance tasks were performed with eyes open and eyes closed conditions Furthermore the forward reach test was to measure the maximal distance by reaching forward without stepping forward or losing balance Results: The neck pain group demonstrated harder tissue status and lower pressure pain threshold before and after pain-induced than control group in bilateral suboccipital (p<01) upper trapezius (p<01) and levator scapulae (p<01) muscles In the cervical kinesthetic sensibility test there were significant differences between the three conditions (neck pain group before pain-induced vs neck pain group after pain-induced vs control) on absolute error of flexion to neutral in the frontal plane (F=3 718 p=0 031) extension to neutral in the sagittal plane (F=3 384 p=0 042) right rotation to neutral in the frontal plane (F=5 475 p
Date of Award2014 Aug 29
Original languageEnglish
SupervisorCheng-Feng Lin (Supervisor)

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