title: Acute effects of caffeine on heart rate variability.
authors.affiliation: University of Leiden, Leiden, The Netherlands.
authors.forename: Hugo P
authors.initials: HP
authors.lastname: Sondermeijer
authors.forename: Alexander G J
authors.initials: AG
authors.lastname: van Marle
authors.forename: Peter
authors.initials: P
authors.lastname: Kamen
authors.forename: Henry
authors.initials: H
authors.lastname: Krum
mesh_terms: D000284:Administration, Oral; D000328:Adult; D001143:Arousal / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects; D002110:Caffeine / Q000494:pharmacology*; D018592:Cross-Over Studies; D004305:Dose-Response Relationship, Drug; D004562:Electrocardiography / Q000187:drug effects*; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008297:Male; D010275:Parasympathetic Nervous System / Q000187:drug effects; D016037:Single-Blind Method; D013564:Sympathetic Nervous System / Q000187:drug effects
chemical_list: D002110:Caffeine