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Hydration and performance during Ramadan.

R J Maughan¹, S M Shirreffs

¹School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom. r.maughan@lboro.ac.uk

Journal of Sports Sciences

|May 19, 2012

Summary

This summary is machine-generated.

During Ramadan, daily fluid loss is typically 1% of body mass, unlikely to impact performance. However, significant dehydration from heat or exercise can impair physical and cognitive functions.

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Area of Science:

Sports Science
Human Physiology
Nutrition Science

Background:

Fasting during Ramadan involves abstaining from food and fluids during daylight hours.
This can lead to progressive daily body water deficits, though typically replenished overnight.
Significant dehydration can negatively impact physical and cognitive performance.

Purpose of the Study:

To examine the effects of fluid loss during Ramadan fasting on physical and cognitive performance.
To identify the threshold of body water deficit that impairs performance.
To discuss implications for athletes, particularly in weight-category sports.

Main Methods:

The study reviews existing literature on hydration, fluid balance, and performance during fasting.
It analyzes the typical daily water loss during Ramadan in temperate climates.
It considers factors exacerbating water loss, such as heat and exercise.

Main Results:

Daily water loss in temperate conditions is around 1% of body mass, generally not performance-limiting.
Larger deficits occur in hot weather or with exercise, potentially impairing performance in events over 1 hour.
Athletes in weight-category sports face challenges due to restricted rehydration opportunities.

Conclusions:

Mild dehydration during Ramadan fasting may not significantly affect performance for sedentary individuals.
Athletes engaging in strenuous activity or competing in hot environments require careful hydration strategies.
Impaired recovery is likely when multiple training sessions or competitions occur without adequate fluid intake.