The Restorative Role of Daytime Naps in Mentally Fatigued Endurance Athletes: a Randomized Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 11
- 试验地点
- 1
- 主要终点
- Perceived mental fatigue
研究概览
简要总结
This randomized, counterbalanced crossover study investigated whether a 30-minute daytime nap can mitigate the effects of experimentally induced mental fatigue in amateur master endurance athletes. Male athletes completed two home-based experimental sessions separated by one week: a mental fatigue condition, in which a 30-minute cognitively demanding task battery preceded the nap, and a control condition, in which participants took only the nap. Sleep parameters during the nap were monitored by wrist actigraphy, and perceived sleep quality was assessed after awakening. Subjective sleepiness, perceived mental fatigue, and cognitive performance were evaluated before the nap, immediately after the nap, and/or 30 minutes after the nap.
The study examined whether mental fatigue influenced nap characteristics and whether the nap improved recovery-related outcomes. The main outcomes included actigraphy-derived nap parameters, perceived sleep quality, sleepiness assessed with the Karolinska Sleepiness Scale, perceived mental fatigue assessed using a visual analogue scale, and cognitive performance assessed with a Flanker task.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
The researcher responsible for data processing and statistical analyses was blinded to condition allocation. Due to the nature of the intervention, participants and the researcher supervising the experimental sessions could not be blinded.
入排标准
- 年龄范围
- 28 Years 至 50 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- •Male amateur master endurance athletes
- •Age between 28 and 50 years
- •Peak oxygen uptake (VO₂peak) ≥55 mL·kg-¹·min-¹
- •Habitual nocturnal sleep duration of at least 7 hours
- •Able and willing to complete both experimental sessions and daytime nap procedures
排除标准
- •Diagnosed medical condition or injury
- •Diagnosed sleep disorder
- •Use of medications or supplements affecting sleep or cognition, including melatonin
- •Habitual sleep duration of less than 7 hours per night
- •Inability to nap during the experimental sessions
研究组 & 干预措施
Mental Fatigue + Daytime Nap
Participants completed a 30-minute mental fatigue induction protocol consisting of cognitively demanding tasks, followed by a 30-minute daytime nap performed at home between 14:00 and 15:00. Subjective sleepiness, perceived mental fatigue, nap characteristics, perceived sleep quality, and cognitive performance were assessed before and/or after the nap.
干预措施: Mental Fatigue Induction Protocol (Behavioral)
Mental Fatigue + Daytime Nap
Participants completed a 30-minute mental fatigue induction protocol consisting of cognitively demanding tasks, followed by a 30-minute daytime nap performed at home between 14:00 and 15:00. Subjective sleepiness, perceived mental fatigue, nap characteristics, perceived sleep quality, and cognitive performance were assessed before and/or after the nap.
干预措施: Daytime Nap (Behavioral)
Daytime Nap Control
Participants completed the control condition consisting of a 30-minute daytime nap performed at home between 14:00 and 15:00, without the preceding mental fatigue induction protocol. Subjective sleepiness, perceived mental fatigue, nap characteristics, perceived sleep quality, and cognitive performance were assessed before and/or after the nap.
干预措施: Daytime Nap (Behavioral)
结局指标
主要结局
Perceived mental fatigue
时间窗: Before the nap, immediately after the nap, and 30 minutes after the nap in each experimental condition.
Perceived mental fatigue was assessed using a 100-mm visual analogue scale for mental fatigue (VAS-MF), anchored from 0-mm "No mental fatigue" to 100-mm "Maximum mental fatigue." Participants marked the point that best represented their perceived level of mental fatigue.
次要结局
- Actigraphy-Derived nap time in bed(During the 30-minute daytime nap in each experimental condition.)
- Actigraphy-Derived nap total sleep time(During the 30-minute daytime nap in each experimental condition.)
- Actigraphy-Derived nap sleep onset latency(During the 30-minute daytime nap in each experimental condition.)
- Actigraphy-Derived nap sleep efficiency(During the 30-minute daytime nap in each experimental condition.)
- Actigraphy-Derived nap fragmentation index(During the 30-minute daytime nap in each experimental condition.)
- Subjective sleepiness(Before the nap, immediately after the nap, and 30 minutes after the nap)
- Flanker Task Reaction Time(30 minutes after the nap in each experimental condition.)
- Perceived Nap Sleep Quality(Immediately after the nap in each experimental condition.)
- Actigraphy-Derived nap start time(During the 30-minute daytime nap in each experimental condition.)
研究者
Jacopo Vitale
Associate Professor, Group Head
L.U.de.S. Sagl