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Aerobic and anaerobic contributions to exhaustive high-intensity exercise after sleep deprivation



Aerobic and anaerobic contributions to exhaustive high-intensity exercise after sleep deprivation



Journal of Sports Sciences 12(5): 455-461



The purpose of this study was to determine the effect of one night's sleep loss on the performance of high-intensity exercise and on the contribution of anaerobic and aerobic energy systems to the exercise. Seven males and seven females performed an all-out cycling exercise test during baseline testing and then on three consecutive days after a sleepless night. The work rates were 5.0 W kg-1 for the females and 6.0 W kg-1 for the males. The aerobic contribution was determined based on measured ovrhdot VO-2 and the anaerobic contribution was determined by subtraction of the aerobic contribution from the total amount of work performed. The results of baseline tests and of tests performed following sleep loss were compared for evidence of an effect of sleep deprivation. The 25-30 h of sleep deprivation did not affect total work, the anaerobic contribution or the aerobic contribution (all P gt 0.1), although there was a tendency (P = 0.13) for mean ovrhdot VO-2 to decrease after the sleepless night. There were no interaction effects involving sex on total work, the anaerobic contribution or the aerobic contribution (all P gt 0.1). The mean (+- S.E.M.) Values for total work (kJ) performed were: baseline, 21.9 +- 2.7; after sleep loss, 21.1 +- 2.5 (day 1), 21.7 +- 2.5 (day 2), and 21.9 +- 2.7 (day 3). It is concluded that, in both males and females, there are no changes in the contributions of the aerobic and anaerobic energy systems to high-intensity exercise performed following the loss of one night's sleep.

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Accession: 008116544

Download citation: RISBibTeXText

PMID: 7799474

DOI: 10.1080/02640419408732195



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