Effects of Exercise Timing and Physical Activity Level on Sleep Quality and Body Temperature
Overview
- Phase
- Not Applicable
- Status
- Recruiting
- Enrollment
- 42
- Locations
- 1
- Primary Endpoint
- Duration of deep slow-wave sleep
Overview
Brief Summary
Modern lifestyles are marked by a prevalence of sedentary behaviors and physical inactivity, which have been linked to numerous adverse health effects. While regular physical exercise is a well-established countermeasure, exercising in the late afternoon may paradoxically disrupt deep sleep due to increased core body temperature. Inactive and sedentary individuals, who often have impaired autonomic function compared to endurance-trained athletes, may be particularly susceptible to these negative effects, potentially resulting in compromised thermoregulation and exacerbated disruptions to deep sleep, a critical stage of sleep essential for overall recovery. Therefore, this study aims to investigate the impact of aerobic exercise performed in the late afternoon versus morning on: 1) deep sleep and sleep onset latency; and 2) core body temperature and its autonomic regulatory mechanisms on endurance-trained and inactive-sedentary people.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Crossover
- Primary Purpose
- Basic Science
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to 30 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Group "Inactive" :No regular exercise practice (inactive people that don't follow the WHO recommendations) and have sedentary behaviors
- •Group "Active": Regular exercise (athletes that are specialized in aerobic exercise, with more than 300 minutes per-week over 6 months and practice at regional level).
Exclusion Criteria
- •Have sleep disorders medically diagnosed or detected by sleep forms cutoffs (clinical insomnia by ISI, severe risk of obstructive sleep apnea by Stop-Bang, bad sleep quality by PSQI.
- •Have a diagnosed mental health condition requiring treatment
- •Have renal, respiratory, cardiovascular or neuromuscular disease medically diagnosed.
- •Be pregnant or breastfeeding
Arms & Interventions
"Inactive-sedentary" group
inactive participants that realize 3 experimental conditions: evening exercise, morning exercise and control (no-exercise).
Intervention: Aerobic Exercise (Other)
"Active" group
endurance athletes that realize 3 experimental conditions: evening exercise, morning exercise and control (no-exercise).
Intervention: Aerobic Exercise (Other)
Outcomes
Primary Outcomes
Duration of deep slow-wave sleep
Time Frame: Once weekly for three weeks (day 1, day 7, day 14, day 21)
Evaluation of the duration of deep slow-wave sleep (N3 stage) quantified by the EEG signal from polysomnography (Nox A1, Resmed®, USA).
Secondary Outcomes
- Assessment of core temperature(Once weekly for three weeks (Day 1, Day 7, Day 14, Day 21))
- Evaluation of autonomic nervous system thermoregulation(Once weekly for three weeks (Day 1, Day 7, Day 14, Day 21))
- Complementary sleep evaluation(Once weekly for three weeks (Day 1, Day 7, Day 14, Day 21))