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Effect of time of day and partial sleep deprivation on short-term, high-power output.
Chronobiol Int 2008; 25(6):1062-76CI

Abstract

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., P(max) [force-velocity test], P(peak), and P(mean) [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 sleep x test-time effect on peak power (P(peak)), mean power (P(mean)), and maximal power (P(max)). 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.

Authors+Show Affiliations

Unité de Recherche Evaluation, Sport, Santé, Centre National de Médecine et Science en Sport, Tunisie. n_souissi@yahoo.frNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19005905

Citation

Souissi, Nizar, et al. "Effect of Time of Day and Partial Sleep Deprivation On Short-term, High-power Output." Chronobiology International, vol. 25, no. 6, 2008, pp. 1062-76.
Souissi N, Souissi M, Souissi H, et al. Effect of time of day and partial sleep deprivation on short-term, high-power output. Chronobiol Int. 2008;25(6):1062-76.
Souissi, N., Souissi, M., Souissi, H., Chamari, K., Tabka, Z., Dogui, M., & Davenne, D. (2008). Effect of time of day and partial sleep deprivation on short-term, high-power output. Chronobiology International, 25(6), pp. 1062-76. doi:10.1080/07420520802551568.
Souissi N, et al. Effect of Time of Day and Partial Sleep Deprivation On Short-term, High-power Output. Chronobiol Int. 2008;25(6):1062-76. PubMed PMID: 19005905.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of time of day and partial sleep deprivation on short-term, high-power output. AU - Souissi,Nizar, AU - Souissi,Mohamed, AU - Souissi,Hichem, AU - Chamari,Karim, AU - Tabka,Zouhair, AU - Dogui,Mohamed, AU - Davenne,Damien, PY - 2008/11/14/pubmed PY - 2009/3/27/medline PY - 2008/11/14/entrez SP - 1062 EP - 76 JF - Chronobiology international JO - Chronobiol. Int. VL - 25 IS - 6 N2 - 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., P(max) [force-velocity test], P(peak), and P(mean) [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 sleep x test-time effect on peak power (P(peak)), mean power (P(mean)), and maximal power (P(max)). 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. SN - 1525-6073 UR - https://www.unboundmedicine.com/medline/citation/19005905/Effect_of_time_of_day_and_partial_sleep_deprivation_on_short_term_high_power_output_ L2 - http://www.tandfonline.com/doi/full/10.1080/07420520802551568 DB - PRIME DP - Unbound Medicine ER -