Abstract
PurposeThe purpose of the present study was to test if caffeine ingestion affects rifle shooting accuracy in trained shooters.MethodsTwenty trained shooters performed 4 shooting tests in a randomized, double-blinded, placebo controlled crossover design; 2 identical tests after placebo ingestion and 2 after ingestion of 300 mg caffeine. The tests consisted of 30 shots in prone position and 30 in standing position on a 10 ring electronic target, on a distance of 50 metres, without any time limit, at rest.ResultsCaffeine supplementation entailed a mean decrease in shooting performance by 11.8 points (95% CI: 6.7 to 17.0, effect size: 0.9). This was primarily a result of an 11.3 (95% CI: 7.2 to 15.4, effect size: 0.9) point decrease during shooting in standing position and not in prone position (0.6 point decrease, 95% CI: -2.1 to 3.2, effect size: 0.1).ConclusionsWe conclude that prior ingestion of 300 mg caffeine impairs rifle shooting accuracy in trained shooters when performed in standing but not in prone position.
Highlights
Caffeine is the most used psychoactive stimulant in the world, occurring naturally in coffee, tea and cacao and as an additive in beverages, such as soda and energy drinks [1]
Caffeine supplementation entailed a mean decrease in shooting performance by 11.8 points
This was primarily a result of an 11.3 point decrease during shooting in standing position and not in prone position (0.6 point decrease, 95% CI: -2.1 to 3.2, effect size: 0.1)
Summary
Caffeine is the most used psychoactive stimulant in the world, occurring naturally in coffee, tea and cacao and as an additive in beverages, such as soda and energy drinks [1]. It is widely used by athletes, probably due to its well-known positive effects on physical performance [2]. The effects of caffeine on rifle shooting accuracy in a noncombat setting seem to be sparsely studied. Our purpose was to test the hypothesis that caffeine ingestion affects rifle shooting accuracy in trained shooters
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