HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free All Versions of this Article: 101/5/1320    most recent 00475.2006v1 Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Burnley, M. Articles by Jones, A. M. Search for Related Content PubMed PubMed Citation Articles by Burnley, M. Articles by Jones, A. M.

Time required for the restoration of normal heavy exercise O₂ kinetics following prior heavy exercise

¹Department of Sport and Exercise Science, University of Wales, Aberystwyth, Ceredigion; ²Chelsea School Research Centre, University of Brighton, Eastbourne, East Sussex; and ³School of Sport and Health Sciences, University of Exeter, Devon, United Kingdom

Submitted 26 April 2006 ; accepted in final form 7 July 2006

Prior heavy exercise markedly alters the O₂ uptake (O₂) response to subsequent heavy exercise. However, the time required for O₂ to return to its normal profile following prior heavy exercise is not known. Therefore, we examined the O₂ responses to repeated bouts of heavy exercise separated by five different recovery durations. On separate occasions, nine male subjects completed two 6-min bouts of heavy cycle exercise separated by 10, 20, 30, 45, or 60 min of passive recovery. The second-by-second O₂ responses were modeled using nonlinear regression. Prior heavy exercise had no effect on the primary O₂ time constant (from 25.9 ± 4.7 s to 23.9 ± 8.8 s after 10 min of recovery; P = 0.338), but it increased the primary O₂ amplitude (from 2.42 ± 0.39 to 2.53 ± 0.41 l/min after 10 min of recovery; P = 0.001) and reduced the O₂ slow component (from 0.44 ± 0.13 to 0.21 ± 0.12 l/min after 10 min of recovery; P < 0.001). The increased primary amplitude was also evident after 20–45 min, but not after 60 min, of recovery. The increase in the primary O₂ amplitude was accompanied by an increased baseline blood lactate concentration (to 5.1 ± 1.0 mM after 10 min of recovery; P < 0.001). Baseline blood lactate concentration was still elevated after 20–60 min of recovery. The priming effect of prior heavy exercise on the O₂ response persists for at least 45 min, although the mechanism underpinning the effect remains obscure.

priming exercise; lactate; oxygen uptake slow component

This article has been cited by other articles:

				H. J. Green, M. E. Burnett, I. C. Smith, S. M. Tupling, and D. A. Ranney Failure of hypoxia to exaggerate the metabolic stress in working muscle following short-term training Am J Physiol Regulatory Integrative Comp Physiol, September 1, 2009; 297(3): R593 - R604. [Abstract] [Full Text] [PDF]

				T. Saitoh, L. F. Ferreira, T. J. Barstow, D. C. Poole, A. Ooue, N. Kondo, and S. Koga Effects of prior heavy exercise on heterogeneity of muscle deoxygenation kinetics during subsequent heavy exercise Am J Physiol Regulatory Integrative Comp Physiol, September 1, 2009; 297(3): R615 - R621. [Abstract] [Full Text] [PDF]

				M. Buchheit, P. B. Laursen, and S. Ahmaidi Effect of prior exercise on pulmonary O2 uptake and estimated muscle capillary blood flow kinetics during moderate-intensity field running in men J Appl Physiol, August 1, 2009; 107(2): 460 - 470. [Abstract] [Full Text] [PDF]

				P. Krustrup, A. M. Jones, D. P. Wilkerson, J. A. L. Calbet, and J. Bangsbo Muscular and pulmonary O2 uptake kinetics during moderate- and high-intensity sub-maximal knee-extensor exercise in humans J. Physiol., April 15, 2009; 587(8): 1843 - 1856. [Abstract] [Full Text] [PDF]

				F. J. DiMenna, D. P. Wilkerson, M. Burnley, S. J. Bailey, and A. M. Jones Influence of priming exercise on pulmonary O2 uptake kinetics during transitions to high-intensity exercise at extreme pedal rates J Appl Physiol, February 1, 2009; 106(2): 432 - 442. [Abstract] [Full Text] [PDF]

				A. Vanhatalo and A. M. Jones Influence of prior sprint exercise on the parameters of the \#8216;all-out critical power test' in men Exp Physiol, February 1, 2009; 94(2): 255 - 263. [Abstract] [Full Text] [PDF]

				F. J. DiMenna, D. P. Wilkerson, M. Burnley, and A. M. Jones Influence of priming exercise on pulmonary O2 uptake kinetics during transitions to high-intensity exercise from an elevated baseline J Appl Physiol, August 1, 2008; 105(2): 538 - 546. [Abstract] [Full Text] [PDF]