Why the study?
Does exercise training improve heart rate variability (RR interval and HF power)?
Population
Populations undergoing exercise training (specific details not provided in abstract)
Design
Meta-analysis
Authors
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Supports exercise to boost autonomic markers; confirms RR/HF gains while implicating non-vagal mechanisms in training bradycardia.
Does exercise training improve heart rate variability (RR interval and HF power)?
Exercise training increases RR interval and HF power, but the mechanisms of training bradycardia likely involve factors beyond just increased vagal modulation.
Sandercock et al. (2005) studied this question.
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