Evidence map›Paper›PMID 31671137›Full record

ArticlePloS one2019

Effect of caffeine ingestion on competitive rifle shooting performance.

Håvard Nygaard, Steinar Riksaasen, Leif Malvin Hjelmevoll, Endre Wold

Abstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Håvard NygaardDepartment of health and exercise physiology, Inland Norway University of Applied Sciences, Lillehammer, Norway.ORCID 0000-0002-7401-5323
Steinar RiksaasenDepartment of health and exercise physiology, Inland Norway University of Applied Sciences, Lillehammer, Norway.
Leif Malvin HjelmevollDepartment of health and exercise physiology, Inland Norway University of Applied Sciences, Lillehammer, Norway.
Endre WoldDepartment of health and exercise physiology, Inland Norway University of Applied Sciences, Lillehammer, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

AthletesCaffeineDouble-Blind MethodFemaleFirearmsHumansMaleNorwayPsychomotor PerformanceRandom AllocationYoung AdultCaffeine

Identifiers

PMID31671137
PMCPMC6822722

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.