The restorative qualities of sleep are fundamentally the basis of the individual athlete’s ability to recover and perform, and to optimally be able to challenge and control the effects of exercise regimes in high performance sport. Research consistently shows that a large percentage of the population fails to obtain the recommended 7–9 hours of sleep per night [17]. Moreover, recent years’ research has found that athletes have a high prevalence of poor sleep quality [6]. Given its implications on the recovery process, sleep affects the quality of the athlete’s training and outcome of competitions.
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The intermittent fasting of Ramadan could affect various aspects of body physiology and biochemistry important to athletic success. Sleep time may be shortened. Disturbance of psychomotor performance, impaired vigilance and slower reactions can be observed particularly during afternoon. Food intake is limited to night-time meals. Well disciplined athletes usually maintain energy balance unless daily energy expenditures are very high. Daytime fluid depletion is inevitable if athletes exercise in the heat.
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