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집중방식이 이중과제 수행에 미치는 영향 KCI 등재

The Effect of Attentional Focus on the Performance of Dual Task

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  • URLhttps://db.koreascholar.com/Article/Detail/6061
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한국전문물리치료학회지 (Physical Therapy Korea)
한국전문물리치료학회 (Korean Research Society of Physical Therapy)
초록

Studies of attentional focus effects, have shown that the performer's attentional focus plays an important role in the performance and learning of motor tasks. We examined the influence of attentional focus on the performance of dual tasks (a postural task and a suprapostural task) and used electromyography (EMG) to examine whether the differences between external and internal focus were also manifest at the neuromuscular level. The subjects (n=40) stood on a balance board (postural task) and held a bar horizontally (suprapostural task). All of the subjects performed under different attentional focus conditions: external (balancer on balance board) or internal (feet) focus on the postural task, and external (balancer on bar) or internal (hand) focus on the suprapostural task. The mean displacement velocity of the bar and the percent reference voluntary contraction (%RVC) of the biceps brachii were reduced when the subjects adopted an external focus on the suprapostural task (p<.05). In addition, the mean displacement velocity of the balance board and %RVC of the tibialis anterior were reduced when the subjects adopted an external focus on the postural task (p<.05). When the subjects adopted an external focus on the suprapostural task, the mean displacement velocity of the balance board and %RVC of the tibialis anterior were also reduced (p<.05). When the subjects' attentional focus was on the postural task, there were no differences in the mean displacement and %RVC of the biceps brachii between attentional focuses. The performance of each task was enhanced when subjects focused on the respective task. The suprapostural task goals had a stronger influence on postural control than vice versa. These results reflect the propensity of the motor system to optimize control processes based on the environmental outcome, or movement effect, that the performer wants to achieve.

저자
  • 노정석(한서대학교 물리치료학과) | Jung-suk Roh 통신저자
  • 이충휘(연세대학교 보건과학대학 물리치료학과) | Chung-hwi Yi
  • 조상현(연세대학교 보건과학대학 물리치료학과) | Sang-hyun Cho
  • 전혜선(연세대학교 보건과학대학 물리치료학과) | Hye-seon Jeon
  • 권혁철(대구대학교 재활과학대학 재활공학과) | Hyuk-cheol Kwon
  • 김택훈(한서대학교 물리치료학과) | Tack-hoon Kim