title: Investigations of exercise adaptation of the cardiovascular system in pilots breathing an oxygen-poor gas mixture. Part II. Analysis of polycardiographic parameters.
abstract: The author carried out investigations of the adaptation to exercise of the cardiovascular system in pilots breathing an oxygen-poor gas mixture analysing the polycardiographic parameters at rest and during postexercise restitution. It was found that hypoxia increased the degree of the adaptation response of the cardiovascular system to exercise. Polycardiographic investigations demonstrated differences in the pattern of post-exercise restitution depending on the level of fitness. Subjects with high fitness had a more pronounced hyperdynamic response, immediately after exercise, while in subjects with low fitness a hypodynamic response developed in a later period of restitution.
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D000337:Aerospace Medicine; D002302:Cardiac Output; D006321:Heart / Q000503:physiopathology*; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D009200:Myocardial Contraction; D009584:Nitrogen / Q000008:administration & dosage; D010100:Oxygen / Q000008:administration & dosage*; D005082:Physical Exertion; D012146:Rest
chemical_list: D009584:Nitrogen; D010100:Oxygen