The Influence of Pressure on a Ball-Bouncing Task

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  • プレッシャーがボールバウンド課題に及ぼす影響
  • プレッシャー ガ ボールバウンド カダイ ニ オヨボス エイキョウ

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The objective of this study was to investigate changes in kinematics, kinetics, attention, and performance when a continuous motor skill is performed under pressure. Fifteen right-handed university students performed a ball-bouncing task with a table-tennis racket for 5 pre-test trials, 60 acquisition trials, 5 post-test trials, and 1 pressure-test trial. In the pressure-test trial, they were told that they would receive a reward or a punishment contingent on their performance. The result showed that the average increment of heart rate under pressure was about 8 bpm (p<.001). Although the accuracy of the ball-bounce and the gripping force did not change under pressure, three-dimensional analysis of kinematics showed that the variability of cycle (p<.05) and horizontal displacement (p<.05) of the paddle head decreased. Attention to distracters also increased (p<.001), while attention toward the ball-bouncing movement did not. The modest level pressure used in this study produced changes in kinematics toward a strategy with more consistent timing and less displacement of the paddle head.

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