注意焦点对乒乓球接发球技能绩效及其运动学特征的影响

n external focus of attention has been found to result in enhancing motor performance compared to an internal focus of attention, and the effect of irrelative focus of attention is not confirmed. This study determined whether differences among the three types of attention and used motion capture system to manifest at the kinematic level. Less-skilled and highly skilled table tennis players participated in three dual-task conditions: the major task is hit back the ball to target, and the minor task concentrate to the auditor tones(irrelative foci) or the movement body itself（internal foci） or the target( external foci). The outcome findings are in line with the constrained action hypothesis. The kinematic results showed why internal focus of attention would damage the motor performance: when performers adopted internal focus of attention, their hitting speed will increase, the period of extending elbow will shorten and the coefficient of internal foci adopted by less-skilled performers and the coefficient of external foci adopted by highly-skilled performers is better than others.