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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Effect of time of day and partial sleep deprivation on short-term, high-power output
Chronobiology International, Volume 25, No. 6, Year 2008
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Description
The purpose of this study was to determine whether delaying bedtime or advancing rising time by 4 h affects anaerobic performance of individuals the following day in the morning and afternoon. Eleven subjects participated in the study, during which we measured the maximal, peak, and mean powers (i.e., Pmax [force-velocity test], Ppeak, and Pmean [Wingate test], respectively). Measurements were performed twice daily, at 07:00 and 18:00 h, following a reference normal sleep night (RN), a partial sleep deprivation timed at the beginning of the night (SDB), and a partial sleep deprivation timed at the end of the night (SDE), and oral temperature was measured every 4 h. Each of the three experimental conditions was separated by a one-week period. Our results showed a circadian rhythm in oral temperature, and analysis of variance revealed a significant sleepxtest-time effect on peak power (Ppeak), mean power (Pmean), and maximal power (Pmax). These variables improved significantly from the morning to the afternoon for all three experimental conditions. Whereas the morning-afternoon improvement in the measures was similar after the RN and SDB conditions, it was smaller following the SDE condition. There was no significant difference in the effect of the two sleep-deprivation conditions on anaerobic performances at 07:00 and at 18:00 h under the SDB condition in comparison with the post-reference night. However, the performance variables were significantly lower at 18:00 h after the SDE condition. In conclusion, a 4 h partial sleep deprivation at the end of the night appears to be more disturbing than partial sleep deprivation at the beginning of the night. Copyright © Informa Healthcare.
Authors & Co-Authors
Souissi, Nizar
Tunisia
Centre National de Médecine et Science en Sport
Tunisia, Sfax
Institut Supérieur du Sport et de L'education Physique de Sfax
Souissi, Mohamed Abdelkader
Tunisia
Faculté de Médecine « Ibn al Jazzar » Sousse
Souissi, Hichem
Tunisia
Faculté de Médecine « Ibn al Jazzar » Sousse
Chamari, K.
Tunisia
Centre National de Médecine et Science en Sport
Tabka, Zouhaïr
Tunisia
Faculté de Médecine « Ibn al Jazzar » Sousse
Dogui, Mohamed H.
Tunisia, Monastir
Faculté de Médecine de Monastir
Davenne, Damien
France, Caen
Université de Caen Normandie
Statistics
Citations: 132
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1080/07420520802551568
ISSN:
07420528
e-ISSN:
15256073
Research Areas
Health System And Policy