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Effects of stance angle on postural stability and performance with national-standard air pistol competitors

The effects of stance angle on postural stability and shooting processes were studied using eight national-standard male air-pistol shooters. Each shooter performed 60 shots each in four stance angles (0°, 15°, 30° and 45° from the line of fire). Postural stability was determined by measuring change in centre of pressure with a dual-force platform system assessing centre-of-pressure (COP) excursion (average difference of the centre of pressure from the mean) and COP speed (total COP path divided by time). Shooting process measures were determined by using a NOPTEL ST-2000 optoelectronic system. Score was assessed with a Sius Ascor S10 electronic scoring system. The results revealed no significant difference among the various stance angles; COP excursion or COP speed, p>0.05. Results indicated a significant stance angle effect with the shooting process measure, hit fine (percentage of hold within an area the size of the 10-ring when centred over the actual shot; p = 0.025) and the shooting performance measure adjusted score (raw score adjusted for true zero; p=0.008). Moreover, best overall performance was with a stance angle of 15°. These findings suggest that stance angle may affect pistol stability and performance in air-pistol athletes.
© Copyright 2013 European Journal of Sport Science. Taylor & Francis. All rights reserved.

Subjects: shooting pistol shooting posture balance stability angel body performance elite sport
Notations: technical sports
DOI: 10.1080/17461391.2012.755569
Published in: European Journal of Sport Science
Published: 2013
Volume: 13
Issue: 5
Pages: 483-489
Document types: article
Language: English
Level: advanced