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Effect of caffeine ingestion on competitive rifle shooting performance.

ABSTRACT: PURPOSE:The purpose of the present study was to test if caffeine ingestion affects rifle shooting accuracy in trained shooters. METHODS:Twenty 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. RESULTS:Caffeine 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). CONCLUSIONS:We conclude that prior ingestion of 300 mg caffeine impairs rifle shooting accuracy in trained shooters when performed in standing but not in prone position.

SUBMITTER: Nygaard H

PROVIDER: S-EPMC6822722 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Effect of caffeine ingestion on competitive rifle shooting performance.

Nygaard Håvard H Riksaasen Steinar S Hjelmevoll Leif Malvin LM Wold Endre E

PloS one 20191031 10

<h4>Purpose</h4>The purpose of the present study was to test if caffeine ingestion affects rifle shooting accuracy in trained shooters.<h4>Methods</h4>Twenty 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, withou ...[more]

PMID: 31671137

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Project description:BackgroundAir-rifle and small-bore shooting are fascinating Olympic sports due to their unique performance requirements for accuracy and precision.ObjectiveThe purpose of our study was to systematically research the literature to determine and summarize performance determinants in both air-rifle and small-bore shooting. Since some athletes participate internationally in both disciplines in competition, the disciplines must have some similarity in the performance structure. Therefore, we further investigated whether performance in air-rifle and small-bore shooting can be explained by the same performance determinants.MethodsWe systematically searched in four databases using combined keywords relevant to performance in air-rifle and small-bore shooting. The articles included had undergone peer-review and had a) a direct relation to shooting performance, b) an indirect relation by comparing the performance of shooters of different skill levels, and c) a practical relevance (directly controllable through training). After the quality of each article was assessed, the key data were extracted and summarized.ResultsThe fourteen articles included achieved an average of 60 ± 14% (range 30-80%) in quality assessment. Altogether, articles covered 268 subjects (32% female), of which 19% were elite- and 28% were national-level athletes. Sixteen performance determinants were investigated, which were divided into anthropometric, technical-coordinative, physiological and psychological categories. Both in air-rifle and small-bore shooting, rifle stability and body sway were found to differ between elite- and national-level athletes. In both disciplines, body sway seemed to have no influence on shot score in elite- and national-level athletes. Similarly, heart rate did not correlate with shot score at nearly all performance levels in both disciplines. In national-level air-rifle athletes, horizontal rifle stability, aiming accuracy and aiming time were found to affect shot score.ConclusionsTo be competitive at a national-level in air-rifle shooting, a highly developed aiming process is needed to achieve a high shot score. Lack of data prevented us from drawing evidence-based conclusions in elite-level air-rifle athletes and in small-bore shooting. Future research should investigate possible performance determinants both in air-rifle and in small-bore shooting, especially with elite-level athletes, to confirm or disprove existing findings. Further research should use more complex analyses to investigate the multifaceted processes associated with different performance determinants.

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Effect of caffeine ingestion on competitive rifle shooting performance.

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Effect of caffeine ingestion on competitive rifle shooting performance.

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