Why the study?
Does the respiratory wave in heart rate variability accurately reflect direct vagal nerve activity in awake goats?
Population
6 healthy adult goats
Design
Preclinical
Authors
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May caution against equating respiratory HRV with parasympathetic tone; leaves open need for direct vagal validation in humans.
Does the respiratory wave in heart rate variability accurately reflect direct vagal nerve activity in awake goats?
Respiratory waves in heart rate variability may not always accurately reflect direct parasympathetic tone, indicating the need for additional parameters to evaluate autonomic function.
Yambe et al. (1999) studied this question.
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