A 20-min nap in athletes changes subsequent sleep architecture but does not alter physical performances after normal sleep or 5-h phase-advance conditions.
Eur J Appl Physiol
; 114(2): 305-15, 2014 Feb.
Article
en En
| MEDLINE
| ID: mdl-24276580
ABSTRACT
PURPOSE:
The aim of the study was to examine the effects of a post-prandial 20 min nap on a short-term physical exercise and subsequent sleep in athletes keeping their usual sleep schedules and in 5-h phase-advance condition.METHODS:
Sixteen healthy young male athletes (age 22.2 ± 1.7 years, non-habitual nappers) participated in the study. After a baseline 8-h time in bed in normal and 5-h advanced sleep schedules, a standardized morning and lunch in a laboratory environment, subjects underwent either a nap (20 min of sleep elapsed from 3 epochs of stage 1 or 1 epoch of stage 2), or a rest without sleep by lying in a bed, between 1300 and 1400 hours in non-shifted condition or 0800 and 0900 hours in shifted condition, after which anaerobic exercises were performed twice 2 h apart. Core body temperature was recorded throughout the study period.RESULTS:
The nap extended sleep onset latency from 6.72 ± 3.83 to 11.84 ± 13.44 min, after shifted condition but did not modify sleep architecture of the post-trial night among athletes, whether shifted or not. Moreover, napping did not improve physical performance but it delayed acrophase and batyphase of core body temperature rhythm parameters.CONCLUSION:
Napping showed no reliable benefit on short-term performances of athletes exercising at local time or after a simulated jet lag.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fases del Sueño
/
Ejercicio Físico
/
Rendimiento Atlético
Tipo de estudio:
Observational_studies
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Año:
2014
Tipo del documento:
Article