Boukhris Omar, Hill David W, Ammar Achraf, Trabelsi Khaled, Hsouna Hsen, Abdessalem Raouf, Mezghanni Nourhen, Souissi Nizar, Bragazzi Nicola Luigi, Chamari Karim, Chtourou Hamdi
Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia.
Institut Supérieur du Sport et de l'Éducation Physique de Sfax, Université de Sfax, Sfax, Tunisia.
Front Physiol. 2022 Feb 9;13:811435. doi: 10.3389/fphys.2022.811435. eCollection 2022.
It is well-documented that changes in the rhythm of life during Ramadan affect sleep schedules (i.e., interruption of night sleep patterns) and are likely to have negative effects on physical and cognitive performances. The aim of the present study was to examine the effect of different naps opportunities' durations during Ramadan on performance of short-duration repetitive maximal exercise and perception of effort. Fifteen physically active men (age: 21 ± 3 years, height: 177 ± 6 cm, body-mass: 73 ± 10 kg) performed a 6 × 30-s shuttle run test after a 25-min nap (N25), a 45-min nap (N45), and in a no-nap condition (NN) during three experimental periods: ∼2 weeks before Ramadan (BR), the last ten days of Ramadan (ER), and ∼3 weeks after Ramadan (AR). During the shuttle run test performed in the late afternoon, the greatest distance (GD), the total distance (TD) and a fatigue index (FI) were assessed. Rating of perceived exertion (RPE) was determined after each 30-s effort. Dietary intake and sleep quality were assessed in each of the three periods. Compared to BR, GD and TD were lower in the ER testing period ( = 0.005; = 0.54) but returned to BR levels in the AR period. During ER, carbohydrate intake was lower ( = 0.04; = 0.2), and sleep duration and sleep quality were reduced ( = 0.27 and 0.54, respectively), although other aspects of dietary intake and sleep pattern were not affected. Compared to NN, GD and TD were higher after N25 ( = 0.57 and 0.34, respectively) and N45 ( = 0.93 and 0.88 respectively). RPE was lower in N45 ( = 0.035, = 0.84). N45 resulted in higher TD ( = 0.021, = 0.13) and lower RPE ( = 0.004; = 0.57) compared to N25 during ER. Taking a daytime nap benefits subsequent performance in a shuttle run test, whether sleep the previous night was normal (as in BR) or compromised (as in ER). The benefits of napping were greater after a 45-min nap opportunity than after a 25-min nap opportunity.
有充分文献记载，斋月期间生活节奏的变化会影响睡眠时间表（即夜间睡眠模式被打断），并可能对身体和认知表现产生负面影响。本研究的目的是检验斋月期间不同午睡时长对短时间重复最大运动表现和用力感知的影响。15名身体活跃的男性（年龄：21±3岁，身高：177±6厘米，体重：73±10千克）在三个实验阶段进行了6×30秒往返跑测试：斋月前约2周（BR）、斋月最后十天（ER）、斋月后约3周（AR），分别在25分钟午睡（N25）、45分钟午睡（N45）和无午睡条件（NN）下进行。在下午晚些时候进行的往返跑测试中，评估了最大距离（GD）、总距离（TD）和疲劳指数（FI）。每次30秒用力后测定自觉用力程度（RPE）。在三个阶段分别评估饮食摄入和睡眠质量。与BR相比，ER测试阶段的GD和TD较低（分别为 = 0.005； = 0.54），但在AR阶段恢复到BR水平。在ER期间，碳水化合物摄入量较低（ = 0.04； = 0.2），睡眠时间和睡眠质量降低（分别为 = 0.27和0.54），尽管饮食摄入和睡眠模式的其他方面未受影响。与NN相比，N25（分别为 = 0.57和0.34）和N45（分别为 = 0.93和0.88）后的GD和TD较高。N45时的RPE较低（ = 0.035， = 0.84）。与ER期间的N25相比，N45导致更高的TD（ = 0.021， = 0.13）和更低的RPE（ = 0.004； = 0.57）。白天午睡对随后的往返跑测试表现有益，无论前一晚睡眠正常（如BR）还是受到影响（如ER）。45分钟午睡机会后的午睡益处大于25分钟午睡机会后的益处。
