title: [The cause of slow increase of heart rate during muscular exercise in man].
abstract: The slow increase in heart rate which is observed in normal man submitted to heavy muscular exercise is due for a part to an activation of orthosympathetic cardiac activity which is blocked by beta antagonists. It is also explained by direct action of hyperthermia on the heart.
mesh_terms: D000328:Adult; D001831:Body Temperature; D005260:Female; D005334:Fever / Q000503:physiopathology; D006321:Heart / Q000502:physiology; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D005082:Physical Exertion; D010869:Pindolol; D010919:Placebos; D013997:Time Factors
chemical_list: D010919:Placebos; D010869:Pindolol
vernacular_title: Déterminisme de la dérive lente de la fréquence cardiaque pendant l'exercise musculaire.