Comparison of the Maximal Muscular Activities of the Deltoid During Shoulder Abductions in Patients with Adhesive Capsulitis (유착성 관절낭염 환자의 어깨벌림 각도에 따른 중간어깨세모근의 최대근활성도 비교)

송일규; Lee, Han-Suk (이한숙); Park Sun Wook (박선욱)

Comparison of the Maximal Muscular Activities of the Deltoid During Shoulder Abductions in Patients with Adhesive Capsulitis

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2016, 11(4), pp.65-70
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy

송일규 ¹, Lee, Han-Suk ², Park Sun Wook ³

¹을지대학교 물리치료학과 보건과학대학원
²을지대학교
³삼성서울병원

Accredited

ABSTRACT

PURPOSE: This study aimed to compare the electromyography (EMG) activity for the middle deltoid (MD) and upper trapezius (UT) muscles in various shoulder abduction angles in patients with adhesive capsulitis (AC). METHODS: A total of 15 subjects participated in the study: 6 without AC (control group) and 9 with AC (AC group). The muscle activities of the UT and MD were measured using EMG during maximal static shoulder abductions in both groups. Each subject performed three repetitions of horizontal abduction at 0°, 30°, 60°, and 90° of the shoulder abduction angle in a sitting position. The measurement data from the middle 3-seconds of the 5-second periods were used. The mean value of three separate sets of measurements was used in the data analysis. For each muscle, independent t-tests were performed to determine group differences. A measured repeated-measures ANOVA was performed using Bonferroni’s post-hoc test. RESULTS: The muscle activity of the UT was significantly greater in the AC group; than in the control group (p<.05). The muscle activity of the MD was significantly lower in the AC group; than in the control group (p<.05). The greatest level of muscle activity for both the MD and UT was demonstrated at the 0-60° and 0-90° of shoulder abduction angles in the AC group. CONCLUSION: These findings showed that low muscle activation of the MD may contribute to hyperactivity of the UT during shoulder abduction in AC patients.

KEYWORDS

Electromyography, Middle deltoid, Upper trapezius, Adhesive capsulitis

Citation status

* References for papers published after 2023 are currently being built.

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