注意の焦点づけが熟練度の異なる肢を用いた遠投パフォーマンスに与える影響

抄録

The present study examined the influence of attentional focus on performance of long-distance throwing using dominant and non-dominant hands with different skill levels. Twenty eight participants (22 males and 6 females, mean age: 22. 4 ± 3. 1 years) who showed significant difference between the performance of dominant and non-dominant hand executed three maximum-effort throwing attempts with dominant and non-dominant hands under three different conditions of attentional focus: (1) internal focus on the wrist (wrist internal focus condition; W-INT) , (2) internal focus on separation between pelvis and upper torso orientations (torso internal focus condition; T-INT) , and (3) external focus on ball trajectory (external focus condition; EXT) . Skill level for each hand was defined as the throwing distance. The results related to throwing distance revealed, through a two-way ANOVA, a significant interaction between hand and attentional focus. With the dominant hand, throwing distance became longer in the T-INT (38. 72 ± 1. 85 m) and EXT (38. 63 ± 1. 9 m ) conditions than in the W-INT (36. 80 ± 1. 77 m ) condition. With the non-dominant hand, throwing distance was shorter in the W-INT (18. 33 ± 0. 80 m ) and T-INT (18. 49 ± 0 .86 m ) conditions than in the EXT (19. 93 ± 0. 93 m) condition. In addition, the results related to release angle also showed a significant interaction between hand and attentional focus. These results suggest that the influence of attentional focus on long-distance throwing differs depending on skill level, and that the variation of throwing distance are related to release angle.