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KMID : 1036120100020010023
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Korean Society of Medicine & Therapy Science
2010 Volume.2 No. 1 p.23 ~ p.32
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The influence of school backpacks on the muscle activity of trunk muscle of youth
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Kong Yong-Soo
Ko Tae-Sung
Woo Ji-Hea
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Abstract
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Objective: This research aims to explore the influence of backpacks on the muscle activity of trunk muscle of youth and to put forward a desirable method of wearing backpacks.
Method: To compare trunk muscle before and after, a paired t-test was used. To compare the differences between groups, one-way ANOVA was used. LSD was used for final analysis.
Results: Muscle activity of treadmill walking showed a significant difference(p<.05) in cervical erector spinae, upper trapezious for the no belt group. LSD showed that muscle activity decreased significantly(p<.05) in cervical erector spinae and upper trapezious when lumbar belt and lumbar-chest belt was worn. In the case of ascent stair walking, cervical erector spinae and upper trapezious showed a significant difference(p<.05) in all groups. In the case of descent stair walking, muscle activity showed a significant difference(p<.05) in cervical erector spinae, upper trapezious, and rectus abdominis for all groups. L SD showed that muscle activity in trunk muscle decreased significantly(p<.05) when the lumbar-chest belt was worn.
Conclusion: It can be concluded that when a belt is worn, the muscle activity of trunk muscle decreases.
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KEYWORD
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Muscle activity, School backpack, Electromyography, Trapezious
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