Evidence map›Paper›PMID 25690408›Full record

ArticleBritish journal of sports medicine2015

The association of environmental heat stress with performance: analysis of the 2014 FIFA World Cup Brazil.

George P Nassis, Joao Brito, Jiri Dvorak, Hakim Chalabi, Sebastien Racinais

Registry-linked trialAbstract read
In one paragraph

Article in British journal of sports medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07482046 (Effectiveness of Topical Menthol as A Cooling Method During Exercise in A Recreational Runner Population), which is not on this map. Cited by 66 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 4 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.

NCT07482046 phase2 / phase3completednot on this mapstarted 2023, after this paper: background citation

Effectiveness of Topical Menthol as A Cooling Method During Exercise in A Recreational Runner Population

TypeinterventionalSponsorTaisho Pharmaceutical IndonesiaRan2023 to 2023Enrolled37ConditionsHeat Stress, Athletic PerformanceArmsLight blue gel with the trademark Counterpain COOL® (License Number: POM QD. 111 709 501) containing the active substance Menthol 4%., Placebo
3 · Its place in the literature

Who cites it

66 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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6 more citing papers are in PubMed but not listed here.

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.

George P NassisNational Sports Medicine Programme-Excellence in Football Project, Aspetar-Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece.
Joao BritoNational Sports Medicine Programme-Excellence in Football Project, Aspetar-Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Jiri DvorakF-MARC (FIFA Medical Assessment Research Centre), Zurich, Switzerland.
Hakim ChalabiAspetar-Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Sebastien RacinaisAthlete Health and Performance Research Centre, Aspetar-Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe 2014 FIFA World Cup Brazil included 64 matches in temperate to tropical environmental conditions. We analysed performance data in relation to the environmental conditions to identify potential association.

methodsWet-bulb globe temperature (WBGT) parameters were obtained at the centre of the field 1 h before the start of play. Environmental stress was estimated (low, moderate and high) for each match using WBGT and relative humidity. Various physical and technical performance indices were recorded during each match (average of both teams).

resultsOver the 64 matches, 28 were played under low, 20 under moderate and 16 under high environmental stress. There was no difference in actual playing time (p=0.517), total distance covered (p=0.491), number of goals scored (p=0.485) and number of cards (p=0.618) between the matches played under different environmental stress categories. The number of sprints was lower in high than in moderate or low environmental stress (-10%, p<0.05) but peak speed was unaffected. The distance covered at high intensity was also lower under high (24.8±2.8 m/min/player) than low environmental stress (26.9±2.3 m/min/player, p=0.02). Number of passes was not different but the rate of successful passes was higher under high (76.8±4.4%) than low (73.6±10.8%) environmental stress (p=0.031).

conclusionsTop-level players seem to modulate their activity pattern during matches in a hot and humid environment (ie, less high-intensity but more low-intensity running and successful passes) to preserve the global match characteristics (ie, similar actual playing time, total distance covered, peak running speed and goals scored).

Indexed as

Analysis of VarianceAthletic PerformanceBrazilEnvironmentExerciseHeat Stress DisordersHot TemperatureHumansRisk AssessmentRunningSoccerEnvironmentHeatPerformanceSoccer

Identifiers

PMID25690408
PMCPMC4413686

What OpenQuestion holds

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Registered trials

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.