Effect of caffeine ingestion on competitive rifle shooting performance

Autoři: Håvard Nygaard aff001;  Steinar Riksaasen aff001;  Leif Malvin Hjelmevoll aff001;  Endre Wold aff001
Působiště autorů: Department of health and exercise physiology, Inland Norway University of Applied Sciences, Lillehammer, Norway aff001
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pone.0224596



The purpose of the present study was to test if caffeine ingestion affects rifle shooting accuracy in trained shooters.


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.


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).


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.

Klíčová slova:

Beverages – Body weight – Caffeine – Cardiac muscles – Cognitive impairment – Heart rate – Ingestion – Sports


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2019 Číslo 10
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