The effects of caffeine on the kinetics of O2 uptake, CO2 production and expiratory ventilation in humans during the on-transient of moderate and heavy intensity exercise

• Published in: Experimental physiology Vol. 84; no. 4; pp. 761 - 774
• Main Authors: Bell, C, Kowalchuk, J M, Paterson, D H, Scheuermann, B W, Cunningham, D A
• Format: Journal Article
• Language: English
• Published: England The Physiological Society 01.07.1999
• Subjects: Adult; Caffeine - pharmacology; Carbon Dioxide - metabolism; Central Nervous System Stimulants - pharmacology; Exercise - physiology; Exercise Test; Glucose - pharmacology; Humans; Male; Models, Biological; Oxygen - metabolism; Oxygen Consumption - drug effects; Oxygen Consumption - physiology; Pulmonary Gas Exchange - drug effects; Pulmonary Gas Exchange - physiology; Pulmonary Ventilation - drug effects; Respiratory Physiological Phenomena; Space life sciences

In order to test the hypothesis that glycogen sparing observed early during exercise following caffeine ingestion was a consequence of tighter metabolic control reflected in faster VO2 kinetics, we examined the effect of caffeine ingestion on oxygen uptake (VO2), carbon dioxide production (VCO2) and...