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KMID : 0357220140260020097
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Journal of Korean Society Physical Therapy
2014 Volume.26 No. 2 p.97 ~ p.103
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Gender Difference in Trunk Stability and Standing Balance during Unexpected Support Surface Translation in Healthy Adults
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Kim Min-Hee
Kim Yu-Shin
Yoon Bum-Chul
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Abstract
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Purpose: The aim of this study was to clarify the gender difference during standing balance in accordance with recruitment of abdominal muscles against sudden support surface translation.
Methods: Twenty healthy males (n = 10, 26.50 ± 3.54 years, 170.60 ± 6.30 cm, 72.80 ± 5.69 kg) and females (n = 10, 24.40 ± 2.63 years, 163.00 ± 4.97 cm, 52.10 ± 4.41 kg) participated in the study. Each subject performed standing balance task on a platform, which moved in the anterior and posterior direction, with a total of 18 trials in three abdominal conditions (resting, hollowing, and bracing). We analyzed angular displacement of thoracic and lumbar spine and linear displacement of center of mass for evaluatione of spinal stability and standing balance, respectively.
Results: Angular displacement of thoracic and lumbar spine and linear displacement of center of mass did not differ significantly between female and male in all conditions.
Conclusion: Our results indicate that the ability to maintain spinal stability and standing balance were similar between male and female regardless of the abdominal contractile conditions and the direction of support surface translation.
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KEYWORD
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Sex, Spine, Abdominal Muscles, Postural Balance
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