Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45
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pISSN : 1975-311X / eISSN : 2287-7215
- https://journal.kci.go.kr/kspm
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Effects of Posture Correction Exercise on Muscle Activity and Onset Time during Arm Elevation in Subject with Forward Head and Rounded Shoulder Posture
- Journal of the Korean Society of Physical Medicine
- Abbr : J Korean Soc Phys Med
- 2020, 15(3), pp.29-41
- DOI : 10.13066/kspm.2020.15.3.29
- Publisher : The Korean Society of Physical Medicine
- Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
- Received : August 15, 2020
- Accepted : August 19, 2020
- Published : August 31, 2020
Park Sun Wook
1,
Lee, Han-Suk
2
1삼성서울병원
2을지대학교
Accredited
ABSTRACT
PURPOSE: The aim of this study was to provide evidence for the treatment of Forward Head and Rounded Shoulder Posture (FHRSP) using posture correction exercises by comparing muscle activity and onset time around the neck and shoulder area during an arm elevation task.
METHODS: The subjects were divided into FHRSP (21 persons) and non-FHRSP (19 persons) groups to measure muscle activity and onset time of muscle contraction. Wireless surface electromyography was used to assess the muscle activity and onset time of the right and left sternocleidomastoid (SCM), splenius capitis, anterior deltoid, middle deltoid, serratus anterior, upper trapezius, pectoralis major, and infraspinatus during an arm elevation task. After the pre-measurement, the participants performed the postural correction exercises, and then the post- measurement was conducted.
RESULTS: After the posture correction exercises, there were significant differences in the muscle activity and onset time of all muscles in the FHRSP group. The results of the comparison of the muscle onset time during an arm elevation task demonstrated that after the postural correction exercises, the muscle onset time was significantly reduced in the right and left SCM and left splenius capitis, but there were no significant changes in the onset time of other muscles.
CONCLUSION: The results of this study help us understand the change in muscle activities and muscle contraction onset time in a person with FHRSP when lifting the arm and suggest the relevant basis to apply the posture correction exercise in clinical settings.
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