September 1, 1993Psychophysiology
Respiratory sinus arrhythmia, cardiac vagal tone, and respiration: Within‐ and between‐individual relations
Why the study?
Does respiratory sinus arrhythmia accurately predict individual differences in cardiac vagal tone in young adults?
Population
29 young adults
Comparison
Single and double autonomic blockade vs No medication (within-subject design)
Design
Other
Authors
Discussion
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Member takes
Implication
Resting RSA alone should not index cardiac vagal tone; leaves open whether combined RSA and heart period improves validity.
Structured PICO
Does respiratory sinus arrhythmia accurately predict individual differences in cardiac vagal tone in young adults?
P
Population
29 young adults
I
Intervention
Single and double autonomic blockade (intravenously administered propranolol and atropine)
C
Comparator
No medication (within-subject design)
O
Outcome
Between- and within-subject relations among respiratory sinus arrhythmia (RSA), cardiac vagal tone, and respiratory parameterssurrogate
Resting respiratory sinus arrhythmia alone is insufficient to predict individual differences in cardiac vagal tone, but its predictive value improves when combined with heart period.
Cite This Study
Grossman et al. (1993) studied this question.