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Published on: December 14, 2011
Comparison of the Cervical Extension Angle and the Upper Trapezius Muscle Activity between Overhead Work and
1Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University and Elderly Life Redesign Institute, Republic of Korea.
Abstract:
[Purpose] The purpose of this study was to compare the cervical extension angle and the upper trapezius muscle activity between overhead work and below-knee work. [Subjects] Twelve males aged 20-30 years, were recruited. [Methods] We measured the cervical extension angle and upper trapezius muscle activity during overhead work and below-knee work. [Results] The results show that the cervical extension angle and upper trapezius muscle activity were significantly increased during below-knee work compared to overhead work. [Conclusion] Below-knee work is more likely to cause neck and shoulder pain than overhead work. Therefore, future studies should investigate below-knee work in detail.
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