Why the study?
Does steady state exercise alter the power spectrum of heart rate variability in healthy subjects?
Population
19 healthy subjects
Comparison
10 min of steady state exercise at 50% of… vs 15 min of rest in the supine state (baseline)
Design
Other
Follow-up
50 minutes total
Authors
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Hypothesis-generating for humoral versus neural HR control; prospective studies needed before clinical HRV interpretation.
Does steady state exercise alter the power spectrum of heart rate variability in healthy subjects?
Steady state exercise suppresses both low and high frequency components of heart rate variability, suggesting humoral factors primarily maintain heart rate during exercise, while neuroregulatory control dominates during orthostatic stress and recovery.
Kamath et al. (1991) studied this question.
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