Evaluation of true maximal oxygen uptake based on a novel set of standardized criteria

Midgley, Adrian W.; Carroll, Sean; Marchant, David; McNaughton, Lars R.; Siegler, Jason

doi:10.1139/h08-146

Cited by 112 publications

(157 citation statements)

References 27 publications

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“…The utilisation of a supra-maximal or submaximal test after a GXT was fi rst reported by Niemala et al [ 23 ] and the evolution of the verifi cation protocol has been well documented by Midgley and Carroll [ 20 ] . The 'verifi cation trial' has typically taken the form of a 'square wave' bout of exercise [ 20 ] , although some recent research has focussed on graded verifi cation protocols [ 21 ] . Development of verifi cation protocols is still in its infancy and is by no means common [ 20 ] ,…”

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confidence: 99%

Comparison of Intensities and Rest Periods for VO2max Verification Testing Procedures

2014

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We sought to determine the incidence of 'true' VO2max confirmation with the verification procedure across different protocols. 12 active participants (men n=6, women n=6) performed in random order 4 different maximal graded exercises tests (GXT) and verification bout protocols on 4 separate days. Conditions for the rest period and verification bout intensity were: A - 105% intensity, 20 min rest; B - 105% intensity, 60 min rest; C - 115% intensity, 20 min rest; D - 115% intensity, 60 min rest. VO2max confirmation (difference between peak VO2 GXT and verification trial<±3%) using the verification trial was 12/12 (100%), 12/12 (100%), 8/12 (66.70%), and 7/12 (58.33%) for protocols A, B, C, and D. There was a significant (p<0.05) effect of verification intensity on VO2max confirmation across all exercise test conditions (intensity effect within recovery 20 min (χ(2) (1)=4.800, p<0.05), intensity effect within recovery 60 min (χ(2) (1)=6.316, p<0.05)). No significant effect was found for incidence of VO2max confirmation with different rest periods. We recommend the use of 105% of the maximal GXT workload and 20 min rest periods when using verification trials to confirm VO2max in normally active populations.

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confidence: 99%

Comparison of Intensities and Rest Periods for VO2max Verification Testing Procedures

2014

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“…These criteria include reaching values for respiratory exchange ratio (RER ≥ . However, because of the broad ranges of these variables at maximal exercise between, and sometimes even within, individuals including children (3,11,39,44,45) their scientific veracity for discriminating VO 2 max in adults has been challenged (32) and there is emerging support for a two-test procedure that has the potential to yield a VO 2 -WR plateau (or leveling off) in all subjects (6,14,26,32).…”

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Maximal Oxygen Uptake Validation in Children With Expiratory Flow Limitation

Robben

Poole²,

Harms³

2013

Pediatric Exercise Science

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A two-test protocol (incremental/ramp (IWT) + supramaximal constant-load (CWR)) to affirm max and obviate reliance on secondary criteria has only been validated in highly fit children. In girls (n = 15) and boys (n = 12) with a wide range of VO 2 max (17-47 ml/kg/min), we hypothesized that this procedure would evince a VO 2 -WR plateau and unambiguous VO 2 max even in the presence of expiratory flow limitation (EFL). A plateau in the VO 2 -work rate relationship occurred in 75% of subjects irrespective of EFL There was a range in RER at max exercise for girls (0.97-1.14; mean 1.06 ± 0.04) and boys (0.98-1.09; mean 1.03 ± 0.03) such that 3/15 girls and 2/12 boys did not achieve the criterion RER. Moreover, in girls with RER > 1.0 it would have been possible to achieve this criterion at 78% VO 2 max. Boys achieved 92% VO 2 max at RER = 1.0. This was true also for HRmax where 8/15 girls' and 6/12 boys' VO 2 max would have been rejected based on HRmax being < 90% of age-predicted HRmax. In those who achieved the HRmax criterion, it represented a VO 2 of 86% (girls) and 87% (boys) VO 2 max. We conclude that this two-test protocol confirms VO 2 max in children across a threefold range of VO 2 max irrespective of EFL and circumvents reliance on secondary criteria.El protocolo que comprende dos test (incremental en rampa (TTI) + carga constante supramaximal) (CCS) aplicado para confirmar el consumo máximo de oxigeno y obviar la dependencia de los criterios secundarios ha sido solamente validado en niñas (n=15) y niños (n=12) bien entrenados, que poseían amplios rangos de VO 2 max (17-47 ml/kg/min). Nosotros hipnotizamos que este procedimiento podría evidenciar una meseta en la relación VO 2 -tasa de trabajo y por lo tanto indicar valores ambiguos de VO 2 max incluso en niños que presentan limitaciones del flujo espiratorio (LFE). La meseta en la relación entre el VO 2 -tasa de trabajo ocurre en el 75% de los sujetos, independientemente de que presenten LFE. El rango de valores en la relación de intercambio respiratorio (RER) se extendió entre 0.97 a 1.14 en niñas (M=1.06±0.04) y entre 0.98 a 1.09 en niños (M=1.03±0.03). De esta forma, 3/15 niñas y 2/12 niños no alcanzaron el criterio de RER para estimar el VO 2 max. Por otra parte, en las niñas que mostraron un RER>1.0 hubiera sido posible alcanzar este criterio con un valor del 78% VO 2 max. Los niños alcanzaron el 92% del VO 2 max con un RER=1.0. Esta respuesta, fue observada también

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“…Ak hovoríme o RQ ≥ 1,15 na konci testu a SF na konci testu ≥ 90% maximálnej predikovanej srdcovej frekvencie (220-vek) v odborných prácach zaznamenávame odlišné výsledky dosiahnutia spomenutých hodnôt (Adrian W. Poole, Wilkerson, & Jones, 2008). V tomto uvažovaní nachádzame zaujímavú štúdiu, ktorá porovnáva hodnoty RQ a SF max na konci testu (Adrian W. Midgley, Carroll, Marchant, McNaughton, & Siegler, 2009). V práci autori porovnávali hodnoty sekundárnych kritérií u 20 bežcov a cyklistov (37,6 ± 5,8 rokov; telesná výška 1,75 ± 0,07 m; telesná hmotnosť 71,6 ± 8,4 kg).…”

Section: Kritéria Validity Dosiahnutia Maximaunclassified

Laboratory determination of maximum oxygen consumption. Do we actually test the maximum values?

Struhár¹

2018

StS

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Evaluation of true maximal oxygen uptake based on a novel set of standardized criteria

Abstract: Background. Criteria are used to identify whether a subject has elicited a

Cited by 112 publications

References 27 publications

Comparison of Intensities and Rest Periods for VO2max Verification Testing Procedures

Comparison of Intensities and Rest Periods for VO2max Verification Testing Procedures

Maximal Oxygen Uptake Validation in Children With Expiratory Flow Limitation

Laboratory determination of maximum oxygen consumption. Do we actually test the maximum values?

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