Pulmonary O2 uptake on-kinetics in endurance- and sprint-trained master athletes

Hdl Handle:
http://hdl.handle.net/10149/96902
Title:
Pulmonary O2 uptake on-kinetics in endurance- and sprint-trained master athletes
Authors:
Berger, N. J. A. (Nicolas); Rittweger, J. (Jörn); Kwiet, A.; Michaelis, I. (Ingo); Williams, A. G.; Tolfrey, K. (Keith); Jones, A. M. (Andrew)
Affiliation:
Manchester Metropolitan University. Department of Exercise and Sport Science.
Citation:
Berger, N. J. A. et. al. (2006) 'Pulmonary O2 uptake on-kinetics in endurance- and sprint-trained master athletes', International Journal of Sports Medicine, 27 (12), pp.1005-1012.
Publisher:
Georg Thieme Verlag
Journal:
International Journal of Sports Medicine
Issue Date:
Dec-2006
URI:
http://hdl.handle.net/10149/96902
DOI:
10.1055/s-2006-923860
Abstract:
The purpose of this study was to characterise the V̇O2 kinetic response to moderate intensity cycle exercise in endurance-trained (END) and sprint or power-trained (SPR) track and field master athletes ranging in age from 45 to 85 years. We hypothesised that the time constant (τ) describing the Phase II V̇O2 on-response would be smaller in the END compared to the SPR athletes, and that the τ would become greater with increasing age in both groups. Eighty-four master athletes who were competing at either the British or European Veteran Athletics Championships acted as subjects, and were classified as either END (800 m - marathon; n = 41), or SPR (100-400 m and field events; n = 43) specialists. Subjects completed two 6 minute "step" transitions to a work rate of moderate intensity on a cycle ergometer and pulmonary gas exchange was measured breath-by-breath. Analysis of variance revealed that SPR athletes had slower V̇O2 on-kinetics (i.e., greater τ) compared to END athletes at each of the age groups studied: 46-55 yrs (END: 25 ± vs. SPR: 36 ± 9s; p < 0.10), 56-65 yrs (END: 25 ± 5 vs. SPR: 35 ± 10 s; p < 0.05), 66-75 yrs (END: 29 ± 10 vs. SPR: 40 ± 13s; p < 0.05), and 76-85 yrs (END: 31 ± 10 vs. SPR: 51 ± 18 s; p < 0.05). The V̇O2 on-kinetics became slower with advancing age in the SPR athletes (p < 0.05 between 56-65 and 76-85 yrs) but were not significantly changed in the END athletes. The slower V̇O2 on-kinetics in SPR compared to END master athletes is consistent both with differences in physiology (e.g., muscle fibre type, oxidative/glycolytic capacity) and training between these specialist athletes. Master END athletes have similar τ values to their younger counterparts (∼25 s) suggesting that participation in endurance exercise training limits the slowing of V̇O2 on-kinetics with age in this population.
Type:
Article
Language:
en
Keywords:
aerobic fitness; ageing; efficiency; O2 deficit
ISSN:
0172-4622; 1439-3964
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 20/04/2010]
Citation Count:
4 [Scopus, 20/04/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorBerger, N. J. A. (Nicolas)en
dc.contributor.authorRittweger, J. (Jörn)en
dc.contributor.authorKwiet, A.en
dc.contributor.authorMichaelis, I. (Ingo)en
dc.contributor.authorWilliams, A. G.en
dc.contributor.authorTolfrey, K. (Keith)en
dc.contributor.authorJones, A. M. (Andrew)en
dc.date.accessioned2010-04-20T12:08:30Z-
dc.date.available2010-04-20T12:08:30Z-
dc.date.issued2006-12-
dc.identifier.citationInternational Journal of Sports Medicine; 27 (12): 1005-1012en
dc.identifier.issn0172-4622-
dc.identifier.issn1439-3964-
dc.identifier.doi10.1055/s-2006-923860-
dc.identifier.urihttp://hdl.handle.net/10149/96902-
dc.description.abstractThe purpose of this study was to characterise the V̇O2 kinetic response to moderate intensity cycle exercise in endurance-trained (END) and sprint or power-trained (SPR) track and field master athletes ranging in age from 45 to 85 years. We hypothesised that the time constant (τ) describing the Phase II V̇O2 on-response would be smaller in the END compared to the SPR athletes, and that the τ would become greater with increasing age in both groups. Eighty-four master athletes who were competing at either the British or European Veteran Athletics Championships acted as subjects, and were classified as either END (800 m - marathon; n = 41), or SPR (100-400 m and field events; n = 43) specialists. Subjects completed two 6 minute "step" transitions to a work rate of moderate intensity on a cycle ergometer and pulmonary gas exchange was measured breath-by-breath. Analysis of variance revealed that SPR athletes had slower V̇O2 on-kinetics (i.e., greater τ) compared to END athletes at each of the age groups studied: 46-55 yrs (END: 25 ± vs. SPR: 36 ± 9s; p < 0.10), 56-65 yrs (END: 25 ± 5 vs. SPR: 35 ± 10 s; p < 0.05), 66-75 yrs (END: 29 ± 10 vs. SPR: 40 ± 13s; p < 0.05), and 76-85 yrs (END: 31 ± 10 vs. SPR: 51 ± 18 s; p < 0.05). The V̇O2 on-kinetics became slower with advancing age in the SPR athletes (p < 0.05 between 56-65 and 76-85 yrs) but were not significantly changed in the END athletes. The slower V̇O2 on-kinetics in SPR compared to END master athletes is consistent both with differences in physiology (e.g., muscle fibre type, oxidative/glycolytic capacity) and training between these specialist athletes. Master END athletes have similar τ values to their younger counterparts (∼25 s) suggesting that participation in endurance exercise training limits the slowing of V̇O2 on-kinetics with age in this population.en
dc.language.isoenen
dc.publisherGeorg Thieme Verlagen
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 20/04/2010]en
dc.subjectaerobic fitnessen
dc.subjectageingen
dc.subjectefficiencyen
dc.subjectO2 deficiten
dc.titlePulmonary O2 uptake on-kinetics in endurance- and sprint-trained master athletesen
dc.typeArticleen
dc.contributor.departmentManchester Metropolitan University. Department of Exercise and Sport Science.en
dc.identifier.journalInternational Journal of Sports Medicineen
ref.citationcount4 [Scopus, 20/04/2010]en
or.citation.harvardBerger, N. J. A. et. al. (2006) 'Pulmonary O2 uptake on-kinetics in endurance- and sprint-trained master athletes', International Journal of Sports Medicine, 27 (12), pp.1005-1012.-
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