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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/24257

Title: Interval and Continuous Exercise Elicit Equivalent Post- exercise Hypotension Despite Differences in Baroreflex Sensitivity and Heart Rate Variability
Authors: Lacombe, Shawn
Advisor: Thomas, Scott
Department: Exercise Sciences
Keywords: Exercise
Blood Pressure
Heart Rate Variability
Post Exericse Hypotension
Hypotension
Interval
Intermittent
Baroreflex
Area Under Curve
Pre-Hypertension
Hypertension
Issue Date: 6-Apr-2010
Abstract: Equi-caloric bouts of interval (INT: 5x 2:2 min at 85 and 40% VO2max) and continuous (21 minutes at 60% VO2max) exercise were performed by 13 older prehypertensive males on separate days, at equivalent times of day, to assess the influence of exercise mode on post-exercise hypotension (PEH). Cardiovascular measures were collected for 30 min pre and 60 min post-exercise. PEH as measured by mean post-exercise systolic blood pressure (SBP) decrease, area under the SBP curve, and minimum SBP achieved, was equivalent after both conditions. SV was significantly reduced and HR was significantly elevated post-exercise after both conditions. No significant reductions in CO or TPR were observed. INT exercise provided a larger perturbation to the autonomic nervous system as measured by Baroreflex sensitivity and Heart Rate Variability. The responses elicited by acute INT exercise, with repeated exposure, may lead to greater improvements in blood pressure regulation than those associated with continuous aerobic training.
URI: http://hdl.handle.net/1807/24257
Appears in Collections:Master
Graduate Department of Exercise Sciences - Master theses

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