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Journal of the Korean Academy of Rehabilitation Medicine 1998;22(6):1298-1304.
Changes in the Pressure Threshold of Myofascial Trigger Points of the Shoulder Girdle Muscles Following Stretching Exercise.
Hong, Dae Jong , Choi, Ki Sup , Park, Si Bog , Lee, Sang Gun
Department of Rehabilitation Medicine, Hanyang University College of Medicine.
견관절 주위근의 스트레칭후 동통유발점 압통역치의 변화
홍대종, 최기섭, 박시복, 이상건
한양대학교 의과대학 재활의학교실
Abstract

Objective
The purpose of this study is to evaluate the effects of a self-stretching exercise on the pressure threshold of myofascial trigger point.


Method
We examined the changes of pressure threshold in 66 patients with myofascial trigger points before and after a self-stretching exercise of shoulder girdle and also tested the visual analogue scale (VAS) of the subjective pain intensity. The self-stretching exercise of shoulder girdle includes a stretching exercise of four muscles in shoulder girdle simultaneously, including upper trapezius, levator scapulae, infraspinatus, rhomboideus major and minor, which is followed by 1) a sitting position, relaxed, 2) lateral bending of neck to contralateral side, 3) forward and downward stretching of ipsilateral arm with protrusion of scapula and internal rotation of arm maximally to the contralateral foot. Each stretching motion is maintained for 30 seconds.


Results
The results of the patients experiencing unilateral or bilateral myofascial neck and shoulder pain showed that the pressure threshold of trigger point increased in response to the self-stretching exercise as assessed by a pressure algometer. Also visual analogue scale (VAS) decreased in response to the self-stretching exercise.


Conclusion
We conclude that the self-stretching exercise of shoulder girdle is an effective method for the simultaneous stretching of upper trapezius, levator scapulae, infraspinatus, rhomboideus major and minor.

Key Words: Myofascial pain syndrome(MPS), Pressure threshold, Trigger point, Visual analogue scale(VAS)


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