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The Effect of Stroop Task on Stride Interval of Gait in Elderly People
( Hitoshi Makabe ),( Takuhiro Ikeda ),( Kenichi Kaneko ) 한국감성과학회 2019 한국감성과학회 국제학술대회(ICES) Vol.2019 No.-
Aims: The aim of this study was to examine the effects of Stroop task on stride interval of gait while walking in young and elderly people. Methods: Subjects were 20 healthy young adult men and 20 healthy elderly men. The subjects walked around a 20-m path shaped like a figure 8, at a comfortable walking speed for 12 minutes with Stroop task and without Stroop task. Stride intervals were recorded by tri-axial accelerometer attached to the heel. Scaling exponent (SE) and approximate entropy (ApEn) were calculated from the time series of stride interval. Results: In walking without Stroop task, the elderly showed significantly lower SE than younger, and ApEn showed no significant difference. In walking with Stroop task, the elderly showed significantly lower SE than younger, and the elderly showed significantly larger than younger. Discussion: The SE indicates the long-term correlation of the stride interval, and the ApEn indicates the regularity of the variation of the stride interval. The results revealed that long-term correlation decreased with age. And by giving the Stroop task, the regularity of the stride interval decreased. These results were caused by the decline of brain-motor network function with age.