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Regulation of Oxygen Consumption at Exercise Onset: Is It Really Controversial?

2001; Lippincott Williams & Wilkins; Volume: 29; Issue: 3 Linguagem: Inglês

10.1097/00003677-200107000-00009

1538-3008

Bruno Grassi,

Heart Rate Variability and Autonomic Control

GRASSI, B. Regulation of oxygen consumption at exercise onset: is it really controversial? Exerc. Sport Sci. Rev., Vol. 29, No. 3, pp 134–138, 2001. The conflicting hypotheses on the limiting factors for skeletal muscle V̇o2 on-kinetics might be reconciled in a unifying scenario. Under "normal" conditions, during transitions to moderate-intensity exercise, the limiting factor appears to be an inertia of oxidative metabolism. During transitions to exercise of higher metabolic intensity, O2 delivery could play a relatively minor but significant role as a limiting factor.