[Purpose] The purpose of this study was to investigate the influence of a dual-task on movements of stepping over an obstacle by elderly people who had a fall experience in the past year. [Subjects] Subjects were 7 people who had a history of falls and 22 people who had no history of falls in the past year. [Methods] Subjects were divided into fallers group while subjects performed and non-fallers group by based on interview results. We measured toe clearance the single and dual tasks. The single task was a solitary motor task. The dual task consisted of a motor task and a concurrent cognitive task. The motor task was stepping over an obstacle during comfortable gait, and the cognitive task was the serial subtraction of seven from 100. [Results] Two-way ANOVA showed that toe-obstacle distance had a significant interaction effect. [Conclusion] These results suggest that fallers and non-fallers may have different strategies for stepping over an obstacle.
（過去1年間に転倒を経験した高齢者と非転倒経験者を対象として、障害物の跨ぎ動作時の障害物と足尖との距離について比較検討した。その結果、歩行速度、歩幅、歩行率については両群ともにシングルタスクとダブルタスクの条件下で有意差がみられた。群間比較では、歩行率と障害物と足尖との距離が転倒経験者で有意に低かった。）
pp.369-372
MASAYUKI SOMA, HIDEYUKI NAKAE, TEPPEI ABIKO, RYOUTA SHIMAMURA, et.al
