Assessment of hydration Status and sleep in athletes during Ramadan month

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Published Jul 1, 2025
https://doi.org/10.62438/tunismed.v103i7.5828
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Vol. 103 No. 7 (2025): Tunis Med Jul 2025

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Khaled Trabelsi
Research laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia. Department of Movement Sciences and Sports Training, School of Sport Science, The University of Jordan, Amman, Jordan
Mohamed Romdhani
Physical Activity, Sport and Health, UR18JS01, National Sports Observatory, Tunis, Tunisia.Interdisciplinary Laboratory in Neuroscience, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, University of Paris Nanterre, Nanterre, France
Juan-Jose Morillas Pedreno
Paris Saint-Germain Football Club
Capucine Bertrand
Paris Saint-Germain Football Club
Haitham Jahrami
Government Hospitals, Manama. Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
Karim Chamari
Naufar, Wellness and Recovery Center, Doha, Qatar

Abstract

Introduction: Ramadan fasting (RF) can induce hypohydration in athletes due to the abstention from water during daylight hours, as well as sleep disturbances related to modified training schedules and increased nighttime social activities. These changes may negatively affect athletic performance, making regular assessment of hydration and sleep essential.


Methods: This review is based on data from systematic reviews, meta-analyses, umbrella reviews, narrative reviews, and expert consensus to provide practical recommendations tailored to the context of Ramadan.


Results: Body mass alone is not a reliable indicator for daily monitoring of hydration status due to changes in body composition during RF. Monitoring the specific gravity and color of the first morning urine sample is a simple, quick, and effective method. Pre- and post-exercise body mass measurement remains the most accurate approach for estimating acute fluid loss. For sleep monitoring, smartwatches and actigraphy are recommended. In the absence of these tools, sleep diaries may be used with caution. Standardized sleep questionnaires are not well-suited to the specific characteristics of Ramadan and should be avoided. Moreover, a state of hyperhydration may disrupt nighttime sleep by increasing nocturnal urination, highlighting the importance of simultaneously monitoring hydration status and sleep.


Conclusion: Hydration status and sleep must be rigorously monitored throughout Ramadan to preserve overall health, reduce physiological strain, and optimize athletic performance.

Keywords:

Intermittent fasting, Sleep duration, Sleep quality, Sport, Water, Water-electrolyte balance

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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