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Impaired choice stepping in response to a visual-spatial attention demanding task among older adults at high risk of
Kazuki Uemura1, Minoru Yamada, Koutatsu Nagai
1Department of Physical Therapy, Graduate School of Medicine, Nagoya University, Higashi-ku, Nagoya, Japan. kazuki.uemura@gmail.com
Background And Aims:
Impairment in visual-spatial attention can cause difficulties in planning and guiding movements, leading to falls in older adults .The purpose of this study was to investigate the relationship between visual-spatial attention during movement and the risk of falling in older adults.
Methods:
Thirty-six elderly volunteers (mean age, 73.2±6.8 years) performed a rapid choice stepping task in response to flanker task stimuli. Step errors in congruent or incongruent conditions were recorded as a measure of the accuracy of choice stepping. Four clinical measurements were also assessed: 10-min walking time, timed up and go test, functional reach test and 5- chair stand test.
Results:
High-risk (HR) participants showed a significantly higher rate of step errors in the incongruent condition than low-risk (LR) ones (HR: 55.5%, LR: 18.5%; p =0.032). Step error in the incongruent condition [odds ratio (OR)=5.5; p=0.041] was the only independent variable which remained significant in the final step of the logistic regression model.
Conclusion:
Impaired choice stepping in response to a visual-spatial attention-demanding task was associated with the risk of falling in older adults.
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