Increasing work rate amplitudes from a common metabolic baseline slowed VO2p kinetics, sped muscle deoxygenation kinetics, and produced no change in blood flow kinetics.
Does increasing work rate amplitudes from a common metabolic baseline alter the kinetic response of V̇o2p, blood flow, and muscle deoxygenation?
Higher work rate amplitudes slow pulmonary oxygen uptake kinetics and speed muscle deoxygenation without altering blood flow kinetics, suggesting a mismatch between oxygen delivery and utilization at higher intensities.
A step increase in work rate produces a monoexponential increase in V̇o 2p and blood flow to a new steady-state. We found that step transitions from a common metabolic baseline to increasing work rate amplitudes produced a slowing of V̇o 2p kinetics, no change in blood flow kinetics, and a speeding of muscle deoxygenation kinetics. As work rate amplitude increased, the ratio of blood flow to V̇o 2p became smaller, while the amplitude of muscle deoxygenation became greater. The gain in vascular conductance became smaller, while kinetics tended to become slower at higher work rate amplitudes.
Love et al. (Thu,) reported a other. Increasing work rate amplitudes vs. Lower work rate amplitudes was evaluated on Kinetic response of VO2p, blood flow, and muscle deoxygenation. Increasing work rate amplitudes from a common metabolic baseline slowed VO2p kinetics, sped muscle deoxygenation kinetics, and produced no change in blood flow kinetics.