Evidence map›Paper›PMID 40880737›Full record

ArticleFrontiers in nutrition2025

Effects of glycerol hyperhidration on the running economy of long-distance runners: a randomized crossover clinical trial.

Carlos Abraham Herrera-Amante, Gustavo García-Zepeda, Carlos Eduardo García-Zepeda, Rodrigo Yáñez-Sepúlveda, Vicente Javier Clemente-Suárez, José Francisco López-Gil, César Octavio Ramos-García

Registry-linked trialAbstract read
In one paragraph

Article in Frontiers in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06818253 (Effects of Glycerol Hyperhydration on Running Economy in Long-Distance Runners), which is not on this map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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.

NCT06818253 nacompletednot on this map

Effects of Glycerol Hyperhydration on Running Economy in Long-Distance Runners

TypeinterventionalSponsorIberoamerican Institute of Sports Science and Human MovementRan2022 to 2024Enrolled30ConditionsRunning, Physical Conditioning, HumanArmsThe Effect of Glycerol Supplements
3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. 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

7 authors.

Carlos Abraham Herrera-AmanteNutritional Assessment and Nutritional Care Laboratory (LECEN), Division of Health Sciences, Tonalá University Center, University of Guadalajara, Tonalá, Mexico.
Gustavo García-ZepedaIbero-American Network of Researchers in Applied Anthropometry (RIBA2), Almería, Spain.
Carlos Eduardo García-ZepedaIbero-American Network of Researchers in Applied Anthropometry (RIBA2), Almería, Spain.
Rodrigo Yáñez-SepúlvedaFaculty of Education and Social Sciences, Universidad Andres Bello (UNAB), Viña del Mar, Chile.
Vicente Javier Clemente-SuárezFaculty of Sports Sciences, Universidad Europea de Madrid (UE), Madrid, Spain.
José Francisco López-GilSchool of Medicine, Universidad Espíritu Santo, Samborondón, Ecuador.
César Octavio Ramos-GarcíaNutritional Assessment and Nutritional Care Laboratory (LECEN), Division of Health Sciences, Tonalá University Center, University of Guadalajara, Tonalá, Mexico.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Endurance athletes experience significant water loss during exercise, which can impair performance and increase the risk of dehydration. Glycerol hyperhydration has been explored as a strategy to enhance pre-exercise hydration, particularly when fluid intake opportunities are limited. This study aimed to evaluate the effects of glycerol hyperhydration on running economy (RE) in trained runners. Methods: A randomized crossover clinical trial was conducted with 30 trained runners (15 men, 15 women) across three sessions. In the first session, peak oxygen uptake (VO Results: Glycerol supplementation significantly improved running economy, reducing CCU ( Conclusion: These findings indicate that glycerol supplementation enhances key metabolic and physiological factors associated with running economy, including CCU, OCU, cardiovascular responses, and perceived exertion in trained runners. Clinical trial registration: https://clinicaltrials.gov, identifier: NCT06818253.

Indexed as

athletic performanceglycerolperformance-enhancing substancesrunningsports nutritional sciencesthermoregulation

Identifiers

PMID40880737
PMCPMC12380534

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.