title: Baroreflex sensitivity: reliability of baroreflex components of the Valsalva maneuver.
abstract: The reliability of the baroreflex sensitivity measurement has not yet been established. Thus, the objective of this study was to define intra-rater reliability of baroreflex sensitivity (BRS) measurements of the Valsalva maneuver (VM) in healthy individuals. Twenty-two healthy volunteers underwent VM testing at two time points. Intra-rater reliability was determined by the intra-class correlation coefficient (ICC), standard error of measurement and minimal detectable difference. Vagal BRS showed good reliability (ICC=0.84), while alternative adrenergic BRS was moderately reproducible (ICC=0.61). Vagal and alternative adrenergic components of BRS in VM are reliable measurements.
authors.affiliation: Department of Clinical Neurological Sciences, University Hospital, London Health Sciences Centre, London, Ontario, Canada; Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada.
authors.forename: Iryna
authors.initials: I
authors.lastname: Palamarchuk
authors.affiliation: Department of Clinical Neurological Sciences, University Hospital, London Health Sciences Centre, London, Ontario, Canada.
authors.forename: Colleen T
authors.initials: CT
authors.lastname: Ives
authors.affiliation: Department of Clinical Neurological Sciences, University Hospital, London Health Sciences Centre, London, Ontario, Canada; Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Hachinski
authors.affiliation: Department of Clinical Neurological Sciences, University Hospital, London Health Sciences Centre, London, Ontario, Canada; Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada. Electronic address: kkimpin@uwo.ca.
authors.forename: Kurt
authors.initials: K
authors.lastname: Kimpinski
mesh_terms: D000328:Adult; D017704:Baroreflex / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D014636:Valsalva Maneuver; D055815:Young Adult
keywords: Autonomic nervous system; Baroreflex; Valsalva maneuver