Hill, Borden, Darnaby and Hendricks (1994) Aerobic and anaerobic contributions to exhaustive high-intensity exercise after sleep deprivation

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

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CONTRIBUTORS:

	Author:	Hill, D. W.
	Author:	Borden, D. O.
	Author:	Darnaby, K. M.
	Author:	Hendricks, D. N.

JOURNAL:

Journal of Sports Sciences (JSS), 12(5), ?? - ??.

YEAR:

1994

PUB TYPE:

Journal Article

SUBJECT(S):

SLEEP-DEPRIVATION; MAN; WOMAN; EXERCISE; AEROBIC-CAPACITY; ANAEROBIC-CAPACITY

DISCIPLINE:

No discipline assigned

HTTP:

LANGUAGE:

English

PUB ID:

103-366-428 (Last edited on 2002/02/27 18:45:01 US/Mountain)

SPONSOR(S):

ABSTRACT:
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 50 W kg-1 for the females and 6.0 W kg-1 for the males. The aerobic contribution was determined based on measured VO2 and the anaerobic contribution was determined by subtraction of the aerobic contribution from the total amount of work performed. The results of baseline test 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 greater than 0.1), although there was a tendency (P=0.13) for mean VO2 to decrease after the sleeplesss night. There were no interaction effects involving sex on total work, the anaerobic contribution or the aerobic contribution (all P greater than 0.1). The mean (plus/minus S.E.M.) values for total work (kJ) performed were: baseline,21.9 plus/minus 2.7; after sleep loss, 21.1 plus/minus 2.5 (day 1), 21.7 plus/minus 2.5 (day 2), and 21.9 plus/minus 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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