title: Comparison of BRS estimates during mild dynamical exercise and recovery.
abstract: Ten estimates of baroreflex sensitivity (BRS) were compared during progressive graded exercise: they were computed from sequence method, spectral and cross-spectral analysis methods, and parametric model-based methods. Results showed baroreflex control of heart rate (HR) changes as a function of the intensity of exercise, as well as the resetting phenomenon. Sequence, spectral and cross-spectral methods generally provided higher estimates than parametric model-based ones. This bias was particularly evident during exercise, and in the high frequency (HF) respiratory band. Results may suggest that the interaction of respiration and baroreflex function play an important in the cardiovascular adaptation from rest to exercise and from exercise to the recovery period.
authors.affiliation: Dipartimento di Bioingegenria, Politecnico di Milano, Piazza Leonardo da Vinci, 20133 Milan, Italy. frederic.vallais@polimi.it
authors.forename: Frédéric
authors.initials: F
authors.lastname: Vallais
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Baselli
authors.forename: Daniela
authors.initials: D
authors.lastname: Lucini
authors.forename: Massimo
authors.initials: M
authors.lastname: Pagani
authors.forename: Alberto
authors.initials: A
authors.lastname: Porta
mesh_terms: D000328:Adult; D017704:Baroreflex / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008955:Models, Cardiovascular