Annals of Occupational and Environmental Medicine

Original Article

Analysis of Shoulder Range of Motion in Shoulder Myofascial Pain Syndrome: Jeong Soo Kim, In Ah Kim, Soo Jin Lee, Yong Kyu Kim, Si Bog Park, Jae Woo Koh, Jaechul Song; Korean Journal of Occupational and Environmental Medicine 2005;17(4):333-342. Published online December 31, 2005; DOI: https://doi.org/10.35371/kjoem.2005.17.4.333

Abstract PDF: OBJECTIVE: This study was carried out to investigate if the measurement of range of motion(ROM) could be applied in the diagnosis of Myofascial Pain Syndrome(MPS) and to determine the severity by analyzing ROM in MPS patients.
METHODS
The study subjects were 476 female telephone number information service workers. Southampton Protocol and Pittsburgh Protocol were used to diagnose MPS and to measure ROM. ROMs were measured by 2 inclinometers exercising each shoulder passively and actively in 5 directions ; abduction, forward flexion, extension, external rotation, and internal rotation.
RESULTS
Compared to the normal group (n=147), the mean of right side ROM in the subjects (n=270) with same side MPS was 2.1 degrees(SD=11.5) lesser in active extension and 1.7 degrees(SD=10.4) lesser in passive extension. Compared to the mild group (n=210), the mean of right side ROM in the patients with same side severe MPS (n=58) was lesser in all directions. Especially in active forward flexion, passive forward flexion, active extension, passive extension and active external rotation, ROM in the subjects with severe MPS was lesser by 6.5 degrees(SD=13.1), 5.1 degrees(SD=12.8), 5.9 degrees(SD=11.8), 5.0 degrees(SD=10.6) and 3.9 degrees(SD=9.8), respectively, than those of the subjects with mild MPS. Compared to the subjects with left side mild MPS(n=172), ROM in the subjects with left side severe MPS (n=59) was 5.3 degrees(SD=13.3) lesser in active forward flexion.
CONCLUSIONS
In this study, ROMs in the subjects with severe MPS tended to be lesser than those in mild patients. This tendency was more prominent in the right side than the left, active range of motion than passive and forward flexion and extension than others. The results of this study are expected to help diagnose shoulder MPS and determine severity.

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Original Article

Effects of Back-belt on Electromyographic Activities and Angle of Lower Back and Extremity during Lifting: Min Hee Kim, Jung Ah Lee, Do Young Jung, Min Ye Jung; Korean Journal of Occupational and Environmental Medicine 2005;17(4):259-266. Published online December 31, 2005; DOI: https://doi.org/10.35371/kjoem.2005.17.4.259

OBJECTIVES
The purpose of this study was to examine the electromyographic activities of the erector spinae muscle of the back and the rectus femoris muscle of the thigh, and to measure the angles of the spinal and knee flexions in order to determine the effect of wearing a back belt.
METHODS
Fifteen healthy males participated in the study. Surface electromyography was used to measure the level of muscle activities at the two muscle groups. The Simi system, utilizing two-dimensional analysis of movement, was used to examine the range of motion of the back and low extremity.
RESULTS
Firstly, the angle of the spinal flexion was significantly less in the back-belt-wearing group than in the control, and that of the knee flexion was significantly increased in the back-belt-wearing group. Secondly, there was no significant change in the electromyographic signals of the erector spinae muscle of the back and the rectus femoris muscle of the thigh.
CONCLUSIONS
The use of back belts helps workers to correct their posture when lifting boxes. It can therefore protect workers from acute back injuries.

Citations

Citations to this article as recorded by

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Effects of low-frequency electrical stimulation on cumulative fatigue and muscle tone of the erector spinae
Da-Haeng Kang, Jae-Keun Jeon, Joon-Hee Lee
Journal of Physical Therapy Science.2015; 27(1): 105. CrossRef
Effect of Pelvic Tilting and the Back-belt on Electromyographic Activity of Erector Spinae During Lifting
Hyung-Ki Park, Tack-Hoon Kim
The Journal of the Korea Contents Association.2009; 9(3): 296. CrossRef

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