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DOI: 10.1055/s-0030-1267192
© Georg Thieme Verlag KG Stuttgart · New York
Incidence of the Plateau at V˙O2max is Dependent on the Anaerobic Capacity
Publication History
accepted after revision August 31, 2010
Publication Date:
11 November 2010 (online)
Abstract
The purpose of this study was to address if there is an association between the plateau at V˙O2max and the anaerobic capacity. 9 well-trained cyclists (age 22.2±3.5 yr, height 182.5±5.0 cm, mass 75.7±8.7 kg, V˙O2max 59.3±4.8 ml.kg−1.min−1completed both an incremental step test of 20 W.min−1 starting at 120 W for determination of maximal oxygen uptake (MOU) and a maximally accumulated oxygen deficit (MAOD) trial at 125% MOU for estimation of anaerobic capacity. Throughout all trials expired air was recorded on a breath-by-breath basis. A significant inverse relationship was observed between the MAOD and the Δ V˙O2 during the final 60 s of the MOU test (r=−0.77, p=0.008). Of the 9 participants it was noted that only 4 exhibited a plateau at MOU. There were non-significant differences for V˙O2 and the associated secondary criteria for those exhibiting a plateau and the non-plateau responders, despite a significant difference for MAOD (p=0.041) between groups. These data suggest that incidence of the plateau at MOU is dependent on anaerobic substrate metabolism and that ranges of responses reported in the literature may be a consequence of variations in anaerobic capacity amongst participants.
Key words
maximal oxygen uptake - volitional exhaustion - test termination - criteria - plateau
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Correspondence
Dan GordonMSc
Anglia Ruskin University
Life Sciences
Unit for Sport and Exercise
Sciences
CB1 1PT Cambridge
United Kingdom
Phone: +44/0845/1962 774
Fax: +44/01223/417 712
Email: dan.gordon@anglia.ac.uk