Abstract ▼ AI-Helper

The purpose of this study was to investigate the effects of the upper limb muscle fatigue on the pistol shooting performance. Seventeen elite male players with members of the Korea national team were recruited for this study. Group A (23.0 ± 2.2 yrs, 68.4 ± 3.4 , 172.2 ± 1.4 cm) and Group B (27.1 ...

The purpose of this study was to investigate the effects of the upper limb muscle fatigue on the pistol shooting performance. Seventeen elite male players with members of the Korea national team were recruited for this study. Group A (23.0 ± 2.2 yrs, 68.4 ± 3.4 , 172.2 ± 1.4 cm) and Group B (27.1 ± 2.7 yrs, 77.0 ± 3.6 kg, 172.6 ± 2.0 cm) were randomly categorized. Both groups performed ten shots freely for 150 s toward the electronic target which was SCATT (SCATT Co., Russia). Group A took 1-set muscle fatigue exercise and group B did 3-set muscle fatigue exercises. After completed the 1-set or 3-set muscle fatigue isokinetic exercise on cybex (Humac Co., USA), all subjects immediately performed the shooting to electric target. In the group 4 the shooting time was significantly increased and the aiming period was inversely decreased (p<0.05), but the shooting score and aiming time was not affected from 1-set muscle fatigue exercise. However, in the group B, all variables (shooting time, aiming period, shooting score, and aiming time) were significantly decreased after 3-set muscle fatigue exercises (p<0.05). Maximum integrated EMG of deltoids and triceps were significantly increased at both groups A and group B after muscle fatigue exercise (p<0.05). Especially, in the group B, the triceps brachii was only significantly increased. Although the average integrated EMG was not significantly different in muscle fatigue exercise at the both groups, deltoids and triceps were relatively increased without the statistical significance. Therefore, the results of the current study suggest that the elite players elongate the aiming time to avoid the deteriorating shooting score in the weak level of muscle fatigue, but decrease both the aiming and the aiming time, and increase the aiming period with the deterioration of shooting score in the high level of muscle fatigue.

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