Effects of Different Transfer Direction of Manual Material Handling on Trunk and Lower Extremity Muscles

作者：Yoo In gyu^*; Yoo Won gyu

来源：Journal of Physical Therapy Science, 2012, 24(12): 1281-1282.

DOI：10.1589/jpts.24.1281

• Electromyography
• Low back pain
• Manual material handling

[Purpose] The purpose of this study was to show the effects of different transfer directions of manual material handling on strain in trunk and lower extremity muscles. [Subjects] Fourteen workers were recruited. [Methods] The EMG activities of the L4 erector spinae, gluteus maximus, and biceps femoris muscles were measured under three manual material handling conditions: conditions 1, 2, and 3. [Results] The EMG activities of the left erector spinee and left biceps femoris muscles significantly increased in the order of conditions 2%26lt;3%26lt;1. The EMG activities of the right erector spinae and right biceps femoris muscles significantly increased in the order of conditions 2%26lt;3%26lt;1. [Conclusion] We suggest that industrial workers can more effectively transfer to the non dominant direction during manual material handling as a way to prevent the occurrence of low back pain.

• 出版日期2012-12