Lolli Lorenzo, Gregson Warren, Pulford Adam, Kanope Tane, Lopez Emmanuel, Di Salvo Valter
Football Performance & Science Department, Aspire Academy, Doha, Qatar.
Department of Sport and Exercise Sciences, Institute of Sport, Manchester Metropolitan University, Manchester, UK.
Sci Med Footb. 2025 May;9(2):152-162. doi: 10.1080/24733938.2024.2340112. Epub 2024 May 16.
To examine the abrupt effects of Ramadan onset on actigraphy-based time asleep in male youth Muslim football players.
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: 12.6 to 16.2 years) participated in the study (464 individual observations). Segmented generalized mixed-effects modelling estimated the effects of Ramadan onset on time asleep during the first period of night sleep only.
Ramadan onset led to an immediate mean reduction of 89 min (95% confidence interval [CI], 54 to 123 min) in time asleep during the first period of night sleep compared to pre-Ramadan sleep patterns. Model-adjusted estimated marginal means for time asleep were ~ 5.7 h (95%CI, 5.1 to 6.2 h) before and ~ 4.2 h (95%CI, 3.6 to 4.7 h) after Ramadan onset. Night sleep interruptions resulting in two or more fragmented periods accounted for 8% (95%CI, 2 to 21%) to 19% (95%, 11 to 29%) of sleep observations before and after Ramadan onset, respectively.
The onset of Ramadan determined an abrupt reduction in time asleep of ~ 1 h 30 min in the first period of a night cycle and contributed to additional problems of heterogeneous sleep fragmentation that can impact optimal school learning and youth athlete performance development processes.
研究斋月开始对以活动记录仪记录的男性青年穆斯林足球运动员睡眠时间的突然影响。
我们采用了准实验性的中断时间序列研究设计，分别在斋月开始前两周和开始后立即连续至少12个晚上追踪客观睡眠时间。22名男性学院学生运动员（实际年龄范围：12.6至16.2岁）参与了该研究（464个个体观察值）。分段广义混合效应模型仅估计了斋月开始对夜间睡眠第一阶段睡眠时间的影响。
与斋月前的睡眠模式相比，斋月开始导致夜间睡眠第一阶段的平均睡眠时间立即减少89分钟（95%置信区间[CI]，54至123分钟）。模型调整后的睡眠时间估计边际均值在斋月开始前约为5.7小时（95%CI，5.1至6.2小时），在斋月开始后约为4.2小时（95%CI，3.6至4.7小时）。导致两个或更多片段化时段的夜间睡眠中断分别占斋月开始前后睡眠观察值的8%（95%CI，2至21%）和19%（95%，11至29%）。
斋月开始导致夜间睡眠周期第一阶段的睡眠时间突然减少约1小时30分钟，并导致了额外的异质性睡眠碎片化问题，这可能会影响最佳的学校学习和青年运动员的成绩发展过程。
