Immediate effects of Ramadan on objective time asleep in male youth football players from the Middle East: an interrupted time-series study.

Objective: To examine the abrupt effects of Ramadan onset on actigraphy-based time asleep in male youth Muslim football players.

Methods: We adopted a quasi-experimental, interrupted time-series research design and tracked objective time asleep over a minimum of 12 consecutive nights in the two weeks prior to and immediately after Ramadan onset, respectively. Twenty-two, male academy student-athletes (chronological age range: 12.