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Nutrients
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Effects of the Hydration Status on Exercise Performance
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Effects of the Hydration Status on Exercise Performance

A special issue of Nutrients (ISSN 2072-6643). This special issue belongs to the section "Sports Nutrition".

Deadline for manuscript submissions: closed (25 March 2025) | Viewed by 5590

Special Issue Editor

Dr. Yasuki Sekiguchi

E-Mail Website
Guest Editor
Sports Performance Lab, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX 79409, USA
Interests: heat acclimation and heat acclimatization; optimizing hydration strategy; fluid and electrolyte balance monitoring; optimizing cooling strategy; training load and recovery status monitoring; sleep monitoring; validation of wearable technology

Special Issue Information

Hydration is a major concern influencing exercise performance and overall health. Despite widespread awareness of its importance, dehydration remains prevalent across various settings, including sports, military, occupational, and tactical environments. The detrimental effects of dehydration are further exacerbated during physical exertion in hot climates, posing substantial risks to performance and health. Maintaining adequate hydration has become increasingly important as global warming intensifies environmental stressors. This Special Issue seeks high-impact manuscripts that explore the complex interplay between hydration and exercise performance, addressing this pressing global challenge. We welcome studies investigating the physiological, environmental, and behavioral factors influencing exercise performance due to changes in hydration status.

Dr. Yasuki Sekiguchi
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nutrients is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydration
  • dehydration
  • fluid balance
  • fluid intake
  • heat stress
  • exercise performance
  • recovery
  • injury prevention
  • sports science

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Published Papers (3 papers)

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Research

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13 pages, 613 KiB  
Article
The Effect of Acute Dehydration upon Muscle Strength Indices at Elite Karate Athletes: A Randomized Crossover Study
by Giannis Arnaoutis and Petros Neophytou
Nutrients 2025, 17(9), 1452; https://doi.org/10.3390/nu17091452 - 25 Apr 2025
Viewed by 983
Abstract
Background/Objectives: Acute dehydration, commonly induced through fluid restriction and/or excessive sweating, is a common weight-cutting strategy among combat sport athletes. However, its impact on muscle strength and power remains a concern. The aim of the study was to evaluate the impact of [...] Read more.
Background/Objectives: Acute dehydration, commonly induced through fluid restriction and/or excessive sweating, is a common weight-cutting strategy among combat sport athletes. However, its impact on muscle strength and power remains a concern. The aim of the study was to evaluate the impact of 2% body mass reduction via dehydration on lower-limb strength and power in elite karate athletes. Methods: Fourteen male elite karate athletes completed two conditions: euhydrated (EUH) and dehydrated (DEH) (−2% body mass via 24-h fluid restriction). Performance was assessed using squat jump (SJ) and countermovement jump (CMJ) tests, along with isokinetic knee flexion and extension at 60, 180, and 300°/s. Results: Dehydration significantly reduced squat jump height (37.19 ± 3.69 vs. 39.34 ± 5.08 cm (EUH), p = 0.04), power output (2188.2 ± 307.2 vs. 2351.1 ± 347.2 W (EUH), p = 0.001), and knee extension and flexion strength at 60°/s (p = 0.018). CMJ height and higher-velocity knee flexion/extension were unaffected (p > 0.05). Conclusions: Acute dehydration impairs lower-body maximal force production at low velocities but has no significant effect on high velocity movements. Athletes and coaches should carefully manage hydration strategies when “cutting weight” to avoid any negative performance effects. Full article
(This article belongs to the Special Issue Effects of the Hydration Status on Exercise Performance)
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12 pages, 1136 KiB  
Article
The Effect of Fluid Restriction and Intake Conditions on the Shooting Performance of Competitive Adolescent Handball Players
by Erdem Uylas, Egemen Mancı, Nidia Rodriguez-Sanchez, Cem Şeref Bediz and Erkan Günay
Nutrients 2024, 16(23), 4246; https://doi.org/10.3390/nu16234246 - 9 Dec 2024
Viewed by 1500
Abstract
(1) Background: This study aimed to investigate the effects of fluid restriction and intake (water vs. sports drink) on shooting accuracy and speed in adolescent handball players, a population with high sensitivity to hydration levels yet understudied in this context. (2) Methods: A [...] Read more.
(1) Background: This study aimed to investigate the effects of fluid restriction and intake (water vs. sports drink) on shooting accuracy and speed in adolescent handball players, a population with high sensitivity to hydration levels yet understudied in this context. (2) Methods: A total of 47 adolescent competitive handball players (15.04 ± 1.5 years) were included in this study, and the participants were divided into low, average, and high performance according to their shooting performance in the familiarization session. All participants were exposed to fluid restriction and intake conditions during handball training on different days. Before and after the training sessions, changes in shooting accuracy and speed were evaluated. (3) Results: The training protocol resulted in body mass loss in the Average Performer group (p = 0.001). Compared to fluid restriction, fluid intake (water intake and sports drink intake) post-training had a positive main effect on shooting accuracy, F(2, 88) = 34.32, p < 0.001, ηp2 = 0.44, and shooting speed, F(1, 61) = 4.05, p = 0.35, ηp2 = 0.84. (4) Conclusions: Hydration level plays an important role in shooting accuracy and speed performance in adolescent handball players. Therefore, fluid intake integrated into training or match sessions may contribute to the maintenance and improvement of shooting performance. Full article
(This article belongs to the Special Issue Effects of the Hydration Status on Exercise Performance)
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Review

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25 pages, 631 KiB  
Review
The Efficacy of Nutritional Strategies and Ergogenic Aids on Acute Responses and Chronic Adaptations to Exertional-Heat Exposure: A Narrative Review
by Ryan A. Dunn, Grant M. Tinsley, Ty B. Palmer, Courteney L. Benjamin and Yasuki Sekiguchi
Nutrients 2024, 16(22), 3792; https://doi.org/10.3390/nu16223792 - 5 Nov 2024
Viewed by 2636
Abstract
Global warming is attributed to an increased frequency of high ambient temperatures and humidity, elevating the prevalence of high-temperature-related illness and death. Evidence over recent decades highlights that tailored nutritional strategies are essential to improve performance and optimise health during acute and chronic [...] Read more.
Global warming is attributed to an increased frequency of high ambient temperatures and humidity, elevating the prevalence of high-temperature-related illness and death. Evidence over recent decades highlights that tailored nutritional strategies are essential to improve performance and optimise health during acute and chronic exertional-heat exposure. Therefore, the purpose of this review is to discuss the efficacy of various nutritional strategies and ergogenic aids on responses during and following acute and chronic exertional-heat exposure. An outline is provided surrounding the application of various nutritional practices (e.g., carbohydrate loading, fluid replacement strategies) and ergogenic aids (e.g., caffeine, creatine, nitrate, tyrosine) to improve physiological, cognitive, and recovery responses to acute exertional-heat exposure. Additionally, this review will evaluate if the magnitude and time course of chronic heat adaptations can be modified with tailored supplementation practices. This review highlights that there is robust evidence for the use of certain ergogenic aids and nutritional strategies to improve performance and health outcomes during exertional-heat exposure. However, equivocal findings across studies appear dependent on factors such as exercise testing modality, duration, and intensity; outcome measures in relation to the ergogenic aid’s proposed mechanism of action; and sex-specific responses. Collectively, this review provides evidence-based recommendations and highlights areas for future research that have the potential to assist with prescribing specific nutritional strategies and ergogenic aids in populations frequently exercising in the heat. Future research is required to establish dose-, sex-, and exercise-modality-specific responses to various nutritional practices and ergogenic aid use for acute and chronic exertional-heat exposure. Full article
(This article belongs to the Special Issue Effects of the Hydration Status on Exercise Performance)
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