Evidence map›Paper›PMID 29946473›Full record

ArticleBMC sports science, medicine & rehabilitation2018

Effects of heat stress and dehydration on cognitive function in elite female field hockey players.

Hannah MacLeod, Simon Cooper, Stephan Bandelow, Rachel Malcolm, Caroline Sunderland

Abstract read
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

5 authors.

Hannah MacLeod1Sport, Health and Performance Enhancement (SHAPE) Research Centre, Department of Sports Science, School of Science and Technology, Nottingham Trent University, Nottingham, England NG11 8NS UK.
Simon Cooper1Sport, Health and Performance Enhancement (SHAPE) Research Centre, Department of Sports Science, School of Science and Technology, Nottingham Trent University, Nottingham, England NG11 8NS UK.
Stephan Bandelow2School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, England UK.
Rachel Malcolm1Sport, Health and Performance Enhancement (SHAPE) Research Centre, Department of Sports Science, School of Science and Technology, Nottingham Trent University, Nottingham, England NG11 8NS UK.
Caroline Sunderland1Sport, Health and Performance Enhancement (SHAPE) Research Centre, Department of Sports Science, School of Science and Technology, Nottingham Trent University, Nottingham, England NG11 8NS UK.ORCID 0000-0001-7484-1345

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt has previously been suggested that heat exposure and hypohydration have negative effects on cognitive performance, which may impact upon sporting performance. The aim of the present study was to examine the independent effects of heat stress and hypohydration on cognitive performance in elite female field hockey players.

methodsEight unacclimatised elite field hockey players (age: 22 ± 3 y; height: 1.68 ± 0.05 m; body mass: 63.1 ± 6.0 kg) completed a cognitive test battery before and after 50 min of field hockey specific exercise on a treadmill in four experimental trials; two in hot conditions (33.3 ± 0.1 °C), and two in moderate (16.0 ± 3.0 °C), both with and without ad libitum water intake.

resultsOn the visual search test, participants were faster overall in the heat (1941 vs. 2104 ms,

conclusionsOverall, the findings suggest that in elite field hockey players exposure to heat enhances response times and/or accuracy on a battery of cognitive function tests. However, hypohydration does not appear to affect cognitive performance in elite field hockey players.

Indexed as

Cognitive performanceDecision-makingHypohydrationIntermittent exerciseSkillTeam sports

Identifiers

PMID29946473
PMCPMC6007074

What OpenQuestion holds

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Registered trials

None linked

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.