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KMID : 0895820080180040147
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Journal of Oriental Rehabilitation Medicine
2008 Volume.18 No. 4 p.147 ~ p.159
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The Study on Relation of Obesity and Low Back Pain Based on Body Composition Using Segmental Bioelectrical Impedance Analysis and Isokinetic Trunk Muscle Strength
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Park Ji-Hyun
Heo Dong-Seok
Yoon Il-Ji
Hong Seo-Young
An Soon-Sun
Choi Yong-Hun
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Abstract
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Objectives :In order to investigate the relation of body composition analysis and isokinetic trunk muscle strength for the screening test of low back pain.
Methods :This study was carried out with the data from comprehensive medical testing. 75 subject aged 20-59 performed the segmental bioelectrical impedance analysis, isokinetic trunk muscle strength test and questionnaire. Then we analyzed the relationship of data.
Results :Low back pain(LBP) prevalence in high obesity index(Body mass index(BMI), Percentage of Body Fat(PBF), Waist Hip Ratio(WHR)) group was higher than LBP prevalence in normal obesity index group(p<0.001). In LBP group, Extension Peak Torque(Ext.PT), Extension Peak Torque per Body Weight(Ext.PT/BW) were significantly lower than Non-LBP group(p<0.001). And 90% of LBP group indicated abnormal Extension-Flexion Ratio(E/F ratio)(1.0 < Normal E/F ratio <1.6). When it comes to analyze relation between obesity index and muscle strength, Ext.PT/BW was significantly decreased accoring to PBF, WHR score. And correlation coefficient in Flex.PT, Flex.PT/BW, Ext.PT, Ext.PT/BW and PBF showed decresing function.
Conclusion :Results from this investigation showed positive correlation between obesity and LBP prevalence. Decreased muscle strength and inbalanced E/F ratio were shown in LBP. Trunk muscle strength was changed according to body mass composition parameters. This results are expected to contribute to prevent and diagnose LBP by application the clinical index of body composition analysis.
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KEYWORD
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Obesity, Body composition analysis, Low back pain, Isokinetic trunk muscle strength
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