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Scientific article
English

Testing the vagal withdrawal hypothesis during light exercise under autonomic blockade: a heart rate variability study

Published inJournal of Applied Physiology, vol. 125, no. 6, p. 1804-1811
Publication date2018
Abstract

We performed the first analysis of heart rate variability (HRV) at rest and exercise under full autonomic blockade on the same subjects, to test the conjecture that vagal tone withdrawal occurs at exercise onset. We hypothesized that, between rest and exercise: i) no differences in total power (PTOT) under parasympathetic blockade; ii) a PTOT fall under β1-sympathetic blockade; iii) no differences in Ptot under blockade of both ANS branches.

Keywords
  • Arterial blood pressure
  • Atropine
  • Baroreflexes
  • Cardiovascular regulation
  • Metoprolol
Citation (ISO format)
FONTOLLIET, Timothée Matthieu et al. Testing the vagal withdrawal hypothesis during light exercise under autonomic blockade: a heart rate variability study. In: Journal of Applied Physiology, 2018, vol. 125, n° 6, p. 1804–1811. doi: 10.1152/japplphysiol.00619.2018
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Identifiers
ISSN of the journal8750-7587
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Creation11/19/2019 4:59:00 PM
First validation11/19/2019 4:59:00 PM
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