ArticleFrontiers in sports and active living2026
Acute differences in field-based physical performance between Ramadan-type fasting and non-fasting conditions in 10-11-year-old youth soccer players.
Article in Frontiers in sports and active living, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Ramadan-type fasting involves prolonged abstinence from food and fluids and may influence physical performance, fatigue, hydration-related responses, and sleep. However, evidence regarding its acute effects on field-based performance in preadolescent soccer players remains limited. This study aimed to compare physical performance, physiological and perceptual responses, sleep duration, and body mass between fed and Ramadan-type fasted conditions in 10-11-year-old male youth soccer players. Methods: Fifteen male youth soccer players completed a within-subject repeated-measures design under two nutritional conditions: fed and Ramadan-type fasted. In the Ramadan-type fasted condition, participants abstained from food and fluid intake for approximately 14 h before testing, whereas in the fed condition testing was performed approximately 3.5-4 h after a standardized meal. Field-based performance was assessed using countermovement jump, 30-m sprint, Illinois agility test, and the Yo-Yo Intermittent Recovery Children's Test. Resting heart rate, pre-test subjective fatigue, post-Yo-Yo perceived exertion, sleep duration, and body mass were also recorded. Results: Countermovement jump height, 30-m sprint time, and Illinois agility test time did not differ significantly between conditions. In contrast, Yo-Yo Intermittent Recovery Children's Test distance was significantly lower under the fasted condition compared with the fed condition. Resting heart rate, pre-test subjective fatigue, and post-Yo-Yo perceived exertion were significantly higher in the fasted condition, while sleep duration and body mass were significantly lower. Discussion: These findings indicate that the Ramadan-type fasted condition was associated with lower intermittent endurance performance and greater perceptual strain, whereas no statistically significant differences were detected in isolated short-duration performance tasks in child soccer players. Coaches and practitioners should carefully monitor fatigue, perceived exertion, sleep, and recovery when planning intermittent endurance-oriented activities for children who voluntarily fast with parental approval.
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