The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Changes of Postural Sway and Muscle Activation While Standing Upright and Performing a Dual Task

선 자세에서 이중과제 수행에 따른 자세 동요와 근활성도 변화

  • Choi, Jin-Ho (Department of Physical Therapy, College of Health & Therapy, Daegu Haany University) ;
  • Lee, Han-Suk (Department of Physical Therapy, College of Health Science, Eulji University) ;
  • Chang, Jong-Sung (Department of Physical Therapy, College of Health & Therapy, Daegu Haany University)
  • 최진호 (대구한의대학교 보건치료대학 물리치료학과) ;
  • 이한숙 (을지대학교 보건과학대학 물리치료학과) ;
  • 장종성 (대구한의대학교 보건치료대학 물리치료학과)
  • Received : 2011.06.29
  • Accepted : 2011.09.06
  • Published : 2011.10.25
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Abstract

Purpose: This study was designed to investigate the changes of postural sway and muscle activation while standing upright and performing a dual task. Methods: Nine healthy adults were recruited and provided their written informed consent. They performed a balance task with and without a cognitive task on a force flatform (Good balance, Metitur Ltd., Filand). Postural sway was measured as medio-lateral and anterior-posterior distance and the velocity of the center of pressure and muscle activations of the ankle dorsi- and plantar-muscle was measured. The recruits completed three trials and the data was analyzed by a paired t-test. Results: There were significant differences in the medio-lateral and anterior-posterior distance and the velocity of the center of pressure, and significant increases in the muscle activities of the tibialis anterior. Conclusion: These findings revealed that performing a dual task increases postural sway and muscle activation of the ankle when simultaneously maintaining balance and performing another cognitive task. Future studies should focus on balance training with a dual task for patients.

Keywords

References

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