Association between $$\dot{\text{V}}$$O2 kinetics and $$\dot{\text{V}}$$O2max in groups differing in fitness status

Inglis, Erin Calaine; Iannetta, Danilo; Murias, Juan M.

doi:10.1007/s00421-021-04623-6

Cited by 14 publications

(3 citation statements)

References 49 publications

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“… of 36 s for O 2max of 64–65 mL.kg −1 .min −1 , c.f. [ 113 ]), suggest that inclusion of a slow component in the modelled fits may have influenced this finding. Hence, whilst it is clear that in the majority of studies the performance of prior exercise enhances O 2 delivery, and there is one instance in the literature where removal of the increased O 2 delivery engendered by priming abolished the priming effect [ 65 ], the weight of evidence indicates that improvements in O 2 delivery are coincident with, but not necessarily responsible for, changes in subsequent to priming.…”

Section: Mechanisms Underpinning the Priming Effectmentioning

confidence: 98%

“…However, people with larger initial values for are more likely to reduce following priming [ 7 , 60 , 64 ], which will increase critical power [ 2 , 3 , 93 , 175 , 176 ]. is hyperbolically related to O 2 max [ 113 , 158 , 177 ], and hence it is likely that untrained individuals with a low O 2 max would experience a reduction in following priming. Hence, for untrained or recreationally active individuals, we anticipate that priming enhances performance during events of > 30 min in duration owing to an increase in critical power [ 2 , 3 , 93 , 175 , 176 ], where critical power sets the upper limit for sustainable exercise performance [ 172 , 178 ].…”

Section: Impact Of Priming On Endurance Performancementioning

confidence: 99%

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How Priming Exercise Affects Oxygen Uptake Kinetics: From Underpinning Mechanisms to Endurance Performance

Goulding

Wüst

2023

Sports Med

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The observation that prior heavy or severe-intensity exercise speeds overall oxygen uptake ($$\dot{V}$$ V ˙ O2) kinetics, termed the “priming effect”, has garnered significant research attention and its underpinning mechanisms have been hotly debated. In the first part of this review, the evidence for and against (1) lactic acidosis, (2) increased muscle temperature, (3) O2 delivery, (4) altered motor unit recruitment patterns and (5) enhanced intracellular O2 utilisation in underpinning the priming effect is discussed. Lactic acidosis and increased muscle temperature are most likely not key determinants of the priming effect. Whilst priming increases muscle O2 delivery, many studies have demonstrated that an increased muscle O2 delivery is not a prerequisite for the priming effect. Motor unit recruitment patterns are altered by prior exercise, and these alterations are consistent with some of the observed changes in $$\dot{V}$$ V ˙ O2 kinetics in humans. Enhancements in intracellular O2 utilisation likely play a central role in mediating the priming effect, probably related to elevated mitochondrial calcium levels and parallel activation of mitochondrial enzymes at the onset of the second bout. In the latter portion of the review, the implications of priming on the parameters of the power–duration relationship are discussed. The effect of priming on subsequent endurance performance depends critically upon which phases of the $$\dot{V}$$ V ˙ O2 response are altered. A reduced $$\dot{V}$$ V ˙ O2 slow component or increased fundamental phase amplitude tend to increase the work performable above critical power (i.e. W´), whereas a reduction in the fundamental phase time constant following priming results in an increased critical power.

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Section: Mechanisms Underpinning the Priming Effectmentioning

confidence: 98%

Section: Impact Of Priming On Endurance Performancementioning

confidence: 99%

How Priming Exercise Affects Oxygen Uptake Kinetics: From Underpinning Mechanisms to Endurance Performance

Goulding

Wüst

2023

Sports Med

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“…In terms of control technology, the CRP responses to exercise can be described as a single-input/single-output system (i. e. WR-CRP). The description of these systems allows to identify the influence of factors such as type of exercise (Koschate et al 2019a, b), ambient conditions (Drescher et al 2018) and individual characteristics, e. g. age (Koschate et al 2016a, b;Ebine et al 2018;Patti et al 2021) or fitness (Beltrame et al 2020;Inglis et al 2021), on the regulation of the cardiorespiratory system.…”

Section: Introductionmentioning

confidence: 99%

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

et al. 2021

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Purpose Kinetics of cardiorespiratory parameters (CRP) in response to work rate (WR) changes are evaluated by pseudo-random binary sequences (PRBS testing). In this study, two algorithms were applied to convert responses from PRBS testing into appropriate impulse responses to predict steady states values and responses to incremental increases in exercise intensity. Methods 13 individuals (age: 41 ± 9 years, BMI: 23.8 ± 3.7 kg m−2), completing an exercise test protocol, comprising a section of randomized changes of 30 W and 80 W (PRBS), two phases of constant WR at 30 W and 80 W and incremental WR until subjective fatigue, were included in the analysis. Ventilation ($$\dot{V}_{{\text{E}}}$$ V ˙ E ), O2 uptake ($$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 ), CO2 output ($$\dot{V}{\text{CO}}_{2}$$ V ˙ CO 2 ) and heart rate (HR) were monitored. Impulse responses were calculated in the time domain and in the frequency domain from the cross-correlations of WR and the respective CRP. Results The algorithm in the time domain allows better prediction for $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and $$\dot{V}{\text{CO}}_{2}$$ V ˙ CO 2 , whereas for $$\dot{V}_{{\text{E}}}$$ V ˙ E and HR the results were similar for both algorithms. Best predictions were found for $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and HR with higher (3–4%) 30 W steady states and lower (1–4%) values for 80 W. Tendencies were found in the residuals between predicted and measured data. Conclusion The CRP kinetics, resulting from PRBS testing, are qualified to assess steady states within the applied WR range. Below the ventilatory threshold, $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and HR responses to incrementally increasing exercise intensities can be sufficiently predicted.

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The relationship between the time constant of $${\dot{\text{V}}\text{O}}$$2 kinetics and $${\dot{\text{V}}\text{O}}$$2max is hyperbolic

Moore

Rossiter

2021

Eur J Appl Physiol

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Association between $$\dot{\text{V}}$$O2 kinetics and $$\dot{\text{V}}$$O2max in groups differing in fitness status

Cited by 14 publications

References 49 publications

How Priming Exercise Affects Oxygen Uptake Kinetics: From Underpinning Mechanisms to Endurance Performance

How Priming Exercise Affects Oxygen Uptake Kinetics: From Underpinning Mechanisms to Endurance Performance

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

The relationship between the time constant of $${\dot{\text{V}}\text{O}}$$2 kinetics and $${\dot{\text{V}}\text{O}}$$2max is hyperbolic

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