title: Test-retest reliability of inotropic and chronotropic measures of cardiac reactivity.
abstract: This study evaluated the retest reliability of a number of inotropic and chronotropic indexes of cardiovascular reactivity to mental arithmetic stress over a 1-week interval. Differential habituation effects of the dependent measures were also assessed. 15 male and 15 female undergraduate Ss were administered a mental arithmetic task (serial subtractions by 13 from a 4-digit number) for 1-min on two successive weeks while their electrocardiogram and impedance cardiogram were recorded. Dependent measures included HR, PEP, HI, SV and CO. Results indicate that all dependent measures were reliable.
authors.affiliation: Department of Psychology, State University of New York, Stony Brook 11794-2500.
authors.forename: J W
authors.initials: JW
authors.lastname: Burns
authors.forename: M L
authors.initials: ML
authors.lastname: Ferguson
authors.forename: S K
authors.initials: SK
authors.lastname: Fernquist
authors.forename: E S
authors.initials: ES
authors.lastname: Katkin
mesh_terms: D000293:Adolescent; D000328:Adult; D002307:Cardiography, Impedance / Q000592:standards; D004562:Electrocardiography / Q000592:standards*; D005260:Female; D006321:Heart / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology*; D013315:Stress, Psychological / Q000503:physiopathology