The importance of the verification phase following an incremental exercise to ensure maximum oxygen consumption

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dc.contributor.authorColakoglu, Muzaffer
dc.contributor.authorOzkaya, Ozgur
dc.contributor.authorBalci, Gorkem A.
dc.date.accessioned2021-05-03T20:37:01Z
dc.date.available2021-05-03T20:37:01Z
dc.date.issued2020
dc.departmentEge Üniversitesien_US
dc.description.abstractBACKGROUND: The purpose of this study was to analyze cardiac output (Qc), stroke volume (SV), heart rate (HR), and arterio-venous O-2 difference (a-vO(2diff)) responses throughout a graded exercise test (GXT) and verification phase (VP) to examine whether SV decrement during the GXT is a main factor for underestimation of the maximal O-2 uptake ((V) over dot(2max)), or not. METHODS: Seven well-trained male cyclists volunteered for this study ((V) over dot(2max): 61.7 +/- 6.13 mL.min(-1).kg(-1)). Following submaximal tests, participants were asked to perform GXT until exhaustion. Then, multise.s.sion verifications were performed on different days using +/- 3% constant work rates. The highest 30-second mean of ((V) over dot(2max)) was considered as the ((V) over dot(2max)) and corresponding external power as peak power output (PPO). The Qc, SV, HR, and a-vO(2diff) responses were evaluated at both GXT and VPby nitrous-oxide rebreathing method. After repeated-measures analyses, possible significant differences were investigated by LSD/Wilcoxon. RESULTS: It was shown that the HR and a-vO(2diff) reached their potentially highest values at the end of the both GXT and VP (192.9 +/- 8.8 vs. 190.7 +/- 7.9 bpm; 17.1 +/- 1.6 vs. 16.9 +/- 1.1%, respectively; P>0.05); however, SV (128.8 +/- 11.2 vs. 137.3 +/- 11.2 mL; P4.029) and Qc (24.8 +/- 2.02 vs. 26.2 +/- 2.71 L.min(-1); P-0.046) were lower at GXT when compared to the VP. VO2 means were, therefore. higher in VP when compared to the GXT (61.7 +/- 6.13 vs. 59.1 +/- 6.2 mL.min(-1).kg(-1); P=0.041). CONCLUSIONS: The GXT provided only a peak ((V) over dot(2) but not the ((V) over dot(2max)). Consequently, the real ((V) over dot(2max)) and PPO could be provided by only VP administrations. This is likely to result from the lower Qc and SV responses observed from a prolonged incremental test protocol when compared to short bouts of constant work rate trials.en_US
dc.description.sponsorshipEge University Scientific Research Projects FundsEge University [EGE BAP-16]en_US
dc.description.sponsorshipPresent study was financially supported by Ege University Scientific Research Projects Funds (EGE BAP-16.BESYO.001).en_US
dc.identifier.doi10.23736/S0022-4707.20.10945-9en_US
dc.identifier.endpage1348en_US
dc.identifier.issn0022-4707
dc.identifier.issn1827-1928
dc.identifier.issue10en_US
dc.identifier.pmid32639117en_US
dc.identifier.scopus2-s2.0-85096981811en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1342en_US
dc.identifier.urihttps://doi.org/10.23736/S0022-4707.20.10945-9
dc.identifier.urihttps://hdl.handle.net/11454/70315
dc.identifier.volume60en_US
dc.identifier.wosWOS:000589417700006en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherEdizioni Minerva Medicaen_US
dc.relation.ispartofJournal of Sports Medicine and Physical Fitnessen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectExerciseen_US
dc.subjectCardiac outputen_US
dc.subjectStroke volumeen_US
dc.titleThe importance of the verification phase following an incremental exercise to ensure maximum oxygen consumptionen_US
dc.typeArticleen_US

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