title: Comparison of V'O2 kinetics in upright and supine position.
abstract: Oxygen uptake (V'O2)  kinetics during exercise depends in particular on muscular aerobic capacity and cardio-vascular parameters.  The objective of this study was to investigate the influence of body position on the V'O2 kinetics as determined by means of the PRBS technique.  9 healthy male volunteers performed bicycle ergometer exercise in both upright and supine position.  No significant changes were seen in normalized gains and phase shifts of the power-V'O2-relationship.  It is concluded that the differences in venous blood volume distribution and cardiac output associated with upright and supine position do not have major effects on power- V'O2-gains.
authors.affiliation: Physiologisches Institut der Deutschen Sporthochschule Koln, FRG.
authors.forename: U
authors.initials: U
authors.lastname: Hoffmann
authors.forename: D
authors.initials: D
authors.lastname: Essfeld
authors.forename: J
authors.initials: J
authors.lastname: Stegemann
authors.forename: H
authors.initials: H
authors.lastname: Schutze
mesh_terms: D002302:Cardiac Output / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D019344:Lactic Acid / Q000378:metabolism; D008297:Male; D013058:Mass Spectrometry; D010101:Oxygen Consumption / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D016683:Supine Position / Q000502:physiology*
chemical_list: D019344:Lactic Acid