Evidence map›Paper›PMID 17887814›Full record

ReviewSports medicine (Auckland, N.Z.)2007

Hydration and muscular performance: does fluid balance affect strength, power and high-intensity endurance?

Daniel A Judelson, Carl M Maresh, Jeffrey M Anderson, Lawrence E Armstrong, Douglas J Casa, William J Kraemer, Jeff S Volek

Registry-linked trialAbstract readReview
PubMed Publisher
In one paragraph

Review in Sports medicine (Auckland, N.Z.), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05380089 (Effects of Hydration Changes on Neuromuscular Function of Athletes With Low Water Intake), which is not on this map. Cited by 78 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing 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.

NCT05380089 naunknown statusnot on this mapstarted 2021, after this paper: background citation

Effects of Hydration Changes on Neuromuscular Function of Athletes With Low Water Intake

TypeinterventionalSponsorFaculdade de Motricidade HumanaRan2021 to 2024Enrolled50ConditionsDehydration, HyperhydrationArmsIncreasing water intake
3 · Its place in the literature

Who cites it

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

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  8. Fluid type influences acute hydration and muscle performance recovery in human subjects.Journal of the International Society of Sports Nutrition · 2019
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18 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

7 authors.

Daniel A JudelsonHuman Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, Connecticut, USA. djudelson@fullerton.edu
Carl M Maresh
Jeffrey M Anderson
Lawrence E Armstrong
Douglas J Casa
William J Kraemer
Jeff S Volek

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Significant scientific evidence documents the deleterious effects of hypohydration (reduced total body water) on endurance exercise performance; however, the influence of hypohydration on muscular strength, power and high-intensity endurance (maximal activities lasting >30 seconds but <2 minutes) is poorly understood due to the inconsistent results produced by previous investigations. Several subtle methodological choices that exacerbate or attenuate the apparent effects of hypohydration explain much of this variability. After accounting for these factors, hypohydration appears to consistently attenuate strength (by approximately 2%), power (by approximately 3%) and high-intensity endurance (by approximately 10%), suggesting alterations in total body water affect some aspect of force generation. Unfortunately, the relationships between performance decrement and crucial variables such as mode, degree and rate of water loss remain unclear due to a lack of suitably uninfluenced data. The physiological demands of strength, power and high-intensity endurance couple with a lack of scientific support to argue against previous hypotheses that suggest alterations in cardiovascular, metabolic and/or buffering function represent the performance-reducing mechanism of hypohydration. On the other hand, hypohydration might directly affect some component of the neuromuscular system, but this possibility awaits thorough evaluation. A critical review of the available literature suggests hypohydration limits strength, power and high-intensity endurance and, therefore, is an important factor to consider when attempting to maximise muscular performance in athletic, military and industrial settings.

Indexed as

Water-Electrolyte BalanceBody WaterDehydrationExerciseHumansMuscle StrengthPhysical Endurance

Identifiers

PMID17887814

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.