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.
Comparison of BRS estimates during mild dynamical exercise and recovery / F. Vallais, G. Baselli, D. Lucini, M. Pagani, A. Porta - In: Proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology SocietyPiscataway : IEEE, 2007. - ISBN 978-1-4244-0787-3. - pp. 291-294 (( Intervento presentato al 29. convegno Annual International Conference of the IEEE Engineering in Medicine and Biology Society tenutosi a Lyon nel 2007 [10.1109/IEMBS.2007.4352281].
Comparison of BRS estimates during mild dynamical exercise and recovery
D. Lucini;M. Pagani;A. Porta
2007
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.Pubblicazioni consigliate
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