Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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The Effect of Age and Dual Task to Human Postural Control

연령와 이중과제 수행이 자세제어에 미치는 영향

  • Shin, Sunghoon (Department of Biomedical Engineering, College of Electronics and Information, Kyung Hee University) ;
  • Jang, Dae-Geun (Department of Electrical Engineering, KAIST) ;
  • Jang, Jae-Keun (Department of Biomedical Engineering, College of Electronics and Information, Kyung Hee University) ;
  • Park, Seung-Hun (Department of Biomedical Engineering, College of Electronics and Information, Kyung Hee University)
  • 신성훈 (경희대학교 전자정보대학 생체의공학과) ;
  • 장대근 (한국과학기술원 전기및전자공학과) ;
  • 장재근 (경희대학교 전자정보대학 생체의공학과) ;
  • 박승훈 (경희대학교 전자정보대학 생체의공학과)
  • Received : 2013.04.30
  • Accepted : 2013.06.20
  • Published : 2013.06.30
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Abstract

The purpose of this study is to investigate the effect of aging and dual tasking to the postural control during quiet standing. It was hypothesized that the center of pressure (COP) dynamics would be differently affected by aging and characteristics of the task. Total 60 adults (35 young adults and 25 older adults) participated in this study. They conducted two different standing tasks (dual vs. Nondual) twice in a random order. Variability, complexity, coupling and symmetric index from the left, right and overall COPs were measured by various parameters in nonlinear, linear and frequency analyses methods. Results demonstrated that older adults had worse performance in postural control with decreased complexity in overall sway movement, and increased coupling between left and right limb COP movement, even though there was no significant difference in symmetric index. These tendencies are generally clearer in nonlinear measures at the dual task condition. Results implied that older adults had compensatory strategy in dual tasking which results in simple and combined postural movement patterns.

Keywords

References

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