Back to Search
Start Over
Evidence that heat acclimation training may alter sleep and incidental activity.
- Source :
- European Journal of Sport Science; Aug2023, Vol. 23 Issue 8, p1731-1740, 10p, 1 Chart, 3 Graphs
- Publication Year :
- 2023
-
Abstract
- This randomized cross-over study tested the hypothesis that heat acclimation training would detrimentally affect sleep variables and alter incidental physical activity compared to a thermoneutral training control condition. Eight recreationally trained males (V̇O<subscript>2peak</subscript> 49±4.9 mL<superscript>.</superscript>kg<superscript>-1.</superscript>min<superscript>-1</superscript>) completed two separate interventions separated by at least 31 days: 5 consecutive day training blocks of moderate-intensity cycling (60 min·day<superscript>-1</superscript> at 50% peak power output) in a hot (34.9±0.7 °C and 53±4 % relative humidity) and a temperate (22.2±2.6 °C; 65±8 % relative humidity) environment. Wrist-mounted accelerometers were worn continuously for the length of the training blocks and recorded physical activity, sleep quality and quantity. Data were analysed in a Bayesian framework, with the results presented as the posterior probability that a coefficient was greater or less than zero. Compared to the temperate training environment, heat acclimation impaired sleep efficiency (Pr β<0 =.979) and wake on sleep onset (Pr β>0 =.917). Daily sedentary time was, on average, 35 min longer (Pr β>0 =.973) and light physical activity time 18 min shorter (Pr β>0 =.960) during the heat acclimation period. No differences were observed between conditions in sleep duration, subjective sleep quality, or moderate or vigorous physical activity. These findings may suggest that athletes and coaches need to be cognisant that heat acclimation training may alter sleep quality and increase sedentary behaviour. Highlights Five consecutive days of heat training negatively affected some objective measures of sleep quality and incidental physical activity in recreationally trained athletes. Athletes and coaches need to be aware of the potential unintended consequences of using heat acclimation on sleep behaviours. [ABSTRACT FROM AUTHOR]
- Subjects :
- HEAT
SLEEP quality
EXTREME weather
SEDENTARY lifestyles
HUMIDITY
PHYSICAL training & conditioning
ACTIGRAPHY
WEARABLE technology
ACCELEROMETERS
PHYSICAL activity
SLEEP duration
SLEEP
RANDOMIZED controlled trials
CONCEPTUAL structures
ACCELEROMETRY
RESEARCH funding
DESCRIPTIVE statistics
CROSSOVER trials
STATISTICAL models
DATA analysis software
ACCLIMATIZATION
PSYCHOLOGICAL stress
Subjects
Details
- Language :
- English
- ISSN :
- 17461391
- Volume :
- 23
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- European Journal of Sport Science
- Publication Type :
- Academic Journal
- Accession number :
- 169807758
- Full Text :
- https://doi.org/10.1080/17461391.2022.2124386