PMID: 15235317Jul 6, 2004Paper

Effects of a single bout of exercise on resting heart rate variability

Medicine and Science in Sports and Exercise
David M PoberPatty S Freedson

Abstract

Chronic exercise training has been shown to have a positive influence on cardiac autonomic function as assessed by measures of heart rate variability (HRV). Recent evidence indicates that several benefits associated with exercise training (e.g., improved insulin action, reduced blood pressure, improved blood lipid profile) may be realized transiently after a single bout of exercise. As many of these effects of recent exercise are linked to cardiovascular control systems, the purpose of this investigation was to test the hypothesis that a single bout of exercise would result in favorable changes in cardiac autonomic function as assessed by frequency-domain measures of HRV. Subjects were 11 healthy male volunteers ages 18-35 yr. Resting HRV measures were obtained during 5 min of paced breathing before and 1, 3, 6, and 22 h after a 60-min bout of cycling exercise at approximately 65% of peak oxygen uptake. Identical measures were obtained in a nonexercise condition based on a randomized crossover design. Exercise resulted in increased high-frequency HRV, decreased low-frequency HRV, and consequently a decrease in the ratio of low-frequency to high-frequency HRV compared with the nonexercise condition. Additionally, a time-domain m...Continue Reading

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Citations

Oct 1, 2013·Journal of Strength and Conditioning Research·Nilo M OkunoFábio Y Nakamura
Nov 28, 2007·Cardiovascular Ultrasound·Jaume PadillaJanet P Wallace
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