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KMID : 1155620120070020039
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Journal of Korea CHUNA Manual Medicine for Spine & Nerves
2012 Volume.7 No. 2 p.39 ~ p.52
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A Study on Correlation between Power of Trunk Flexors, Extensors and Lumbar Lordotic Angle in Normal Adults
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Choi Bo-Mi
Lee Jung-Min
Kim Hyun-Soo
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Abstract
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Objectives : The purpose of this study was to investigate the correlation between lumbar lordotic angle and the power of trunk flexors, extensors in normal adults
Methods : 34 normal participants participated in this study. Their lumbar lordotic angle(L1-S1 Cobb’s angle and L1-L5 cobb’s angle) was measured by x-ray taken on lateral direction, erect cross-arm position. And muscle power of trunk flexors and extensors of each participant measured using Cybex HUMAC NORM.
Results : 1. The average of L1-S1 Cobb's angle was 47.21±8.88°and the average of L1-L5 Cobb’s angle was 36.32±9.62°
(Table Ⅳ). 2. The average ratio of trunk flexors/extensors was 6.44±19.31%(Table Ⅴ). The average power of the trunk flexors was 165.18± 55.05 (Newton-Meter/kg), and the power of trunk extensors was 257.18±85.53 (Newton-Meter/kg)(Table Ⅵ). 3. Lumbar lordotic angle has no relation to the ratio of trunk flexors/extensors(Table Ⅶ, Fig. 4). 4. Lumbar lordotic angle has no relation to both the power of the trunk flexors and extensors(Table Ⅷ, Fig. 5, Fig. 6).
Conclusions : These results suggest that the lumbar lordotic angle measured by radiograph could not evaluate the power and ratio of trunk flexors, extensors.
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KEYWORD
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Lumbar lordotic angle, Trunk flexors, Trunk extensors
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