Influence of blood donation on O2 uptake on‐kinetics, peak O2 uptake and time to exhaustion during severe‐intensity cycle exercise in humans

M Burnley, CL Roberts, R Thatcher… - Experimental …, 2006 - Wiley Online Library
We hypothesized that the reduction of O2‐carrying capacity caused by the withdrawal of∼
450 ml blood would result in slower phase II O2 uptake kinetics, a lower and a reduced time …

Clarifying the equation for modeling of V̇o2 kinetics above the lactate threshold

S Ma, HB Rossiter, TJ Barstow… - Journal of Applied …, 2010 - journals.physiology.org
](2) where A0, A1, and A2 represent amplitudes of the first, second, and third phases of
response; 0, 1, and 2 represent time constants; and TD1 and TD2 represent time delays …

Prior heavy exercise elevates pyruvate dehydrogenase activity and muscle oxygenation and speeds O2 uptake kinetics during moderate exercise in older adults

BJ Gurd, SJ Peters… - American Journal …, 2009 - journals.physiology.org
The adaptation of pulmonary oxygen uptake (V̇o2p) kinetics during the transition to
moderate-intensity exercise is slowed in older compared with younger adults; however, this …

In vivo evidence of an age-related increase in ATP cost of contraction in the plantar flexor muscles

G Layec, JD Trinity, CR Hart, SE Kim, HJ Groot… - Clinical …, 2014 - portlandpress.com
Impaired skeletal muscle efficiency potentially contributes to the age-related decline in
exercise capacity and may explain the altered haemodynamic response to exercise in the …

Influence of prior exercise on muscle [phosphorylcreatine] and deoxygenation kinetics during high‐intensity exercise in men

AM Jones, J Fulford, DP Wilkerson - Experimental physiology, 2008 - Wiley Online Library
31Phosphate‐magnetic resonance spectroscopy and near infrared spectroscopy (NIRS)
were used for the simultaneous assessment of changes in quadriceps muscle metabolism …

“Work‐to‐Work” exercise slows pulmonary oxygen uptake kinetics, decreases critical power, and increases W'during supine cycling

RP Goulding, DM Roche, S Marwood - Physiological Reports, 2018 - Wiley Online Library
We have previously demonstrated that the phase II time constant of pulmonary oxygen
uptake kinetics () is an independent determinant of critical power (CP) when O2 availability …

[HTML][HTML] Exercise tolerance can be enhanced through a change in work rate within the severe intensity domain: work above critical power is not constant

J Dekerle, KM de Souza, RD de Lucas… - PLoS …, 2015 - journals.plos.org
Introduction The characterization of the hyperbolic power-time (Pt lim) relationship using a
two-parameter model implies that exercise tolerance above the asymptote (Critical Power; …

A raised metabolic rate slows pulmonary O2 uptake kinetics on transition to moderate‐intensity exercise in humans independently of work rate

TS Bowen, SR Murgatroyd, DT Cannon… - Experimental …, 2011 - Wiley Online Library
During exercise below the lactate threshold (LT), the rate of adjustment (τ) of pulmonary O2
uptake () is slowed when initiated from a raised work rate. Whether this is consequent to the …

Elevated baseline work rate slows pulmonary oxygen uptake kinetics and decreases critical power during upright cycle exercise

RP Goulding, DM Roche, S Marwood - Physiological Reports, 2018 - Wiley Online Library
Critical power is a fundamental parameter defining high‐intensity exercise tolerance, and is
related to the phase II time constant of pulmonary oxygen uptake kinetics (). Whether this …

Muscle [phosphocreatine] dynamics following the onset of exercise in humans: the influence of baseline work‐rate

AM Jones, DP Wilkerson, J Fulford - The Journal of physiology, 2008 - Wiley Online Library
The kinetics of pulmonary O2 uptake is known to be substantially slower when exercise is
initiated from a baseline of lower‐intensity exercise rather than from rest. However, it is not …