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Journal of the Korean Academy of Rehabilitation Medicine 2010;34(1):20-26.
The Correlation between Postural Control and Attention during Performance of Dual Task in Stroke Patients.
Lee, Sook Joung , Chun, Min Ho , Han, Eun Young , Lee, Jin Ah
1Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Korea. mhchun@amc.seoul.kr
2Department of Rehabilitation Medicine, Jeju National University Hospital, Korea.
3Department of Rehabilitation Medicine, Huwell Hospital, Korea.
뇌졸중 환자에서 이중과제 수행 시 자세의 안정성과 집중력간의 상호관계
이숙정, 전민호, 한은영1, 이진아2
울산대학교 의과대학 서울아산병원 재활의학교실, 1제주국립대학교병원 재활의학과, 2휴웰병원 재활의학과
To compare differences in postural changes during dual-task performance (DTP) between stroke patients and healthy controls, and to investigate the relationship between postural control and attention during DTP in stroke patients.
Twenty-nine subacute stroke patients who were able to stand independently and ten age-matched, healthy controls were enrolled in the study. The postural control of subjects was evaluated in all of the following four conditions using posturography: a simple standing state with eyes open (EO), a DTP with EO, a simple standing state with eyes closed (EC) and a DTP with EC. The dual-task was performed by standing while inversely repeating a given four-digit number. The parameters were stability index (SI) and weight distribution index (WDI) in posturography. Both visual and auditory inattention of the stroke patients were measured using the computer neuropsychologic test.
In stroke patients, SI and WDI increased significantly during DTP (p<0.05) both their EO and EC status. The change of SI during DTP was positively correlated with the visual and auditory inattention in stroke patients (p<0.01) with their EO status. No significant correlations were noticed in WDI.
Postural changes during DTP increased more in stroke patients than in healthy controls. Postural control showed a significant correlation with visual and auditory attention during the DTP in stroke patients. We therefore expect that dual-task training using postural control and attention will be an attractive treatment method for increasing postural stability in stroke patients. (J Korean Acad Rehab Med 2010; 34: 20-26)
Key Words: Dual task, Postural control, Attention, Stroke


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