title: The final frontier: oxygen flux into muscle at exercise onset.
abstract: In humans at exercise onset, intramuscular phosphocreatine decreases immediately, whereas muscle oxygen (O2) uptake seems to rise after a delay of up to 15 s which is inconsistent with models of metabolic control. Novel microcirculatory investigations reveal that elevated capillary-to-myocyte O2 flux in rat muscle is, in fact, initiated simultaneously with contractions.
authors.affiliation: Department of Kinesiology, Kansas State University, Manhattan, KS 66506-5802, USA. poole@vet.ksu.edu
authors.forename: David C
authors.initials: DC
authors.lastname: Poole
authors.forename: Leonardo F
authors.initials: LF
authors.lastname: Ferreira
authors.forename: Brad J
authors.initials: BJ
authors.lastname: Behnke
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Barstow
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Jones
mesh_terms: D015444:Exercise / Q000502:physiology*; D006439:Hemodynamics; D006801:Humans; D007700:Kinetics; D008833:Microcirculation / Q000502:physiology; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption / Q000502:physiology; D010725:Phosphocreatine; D014481:United States
chemical_list: D010725:Phosphocreatine; D010100:Oxygen