Why the study?
How do exercise load and breathing frequency affect heart rate and blood pressure variability in healthy subjects?
Population
9 healthy subjects
Comparison
Dynamic exercise at 3 loads with controlled… vs Resting state and varying exercise…
Design
Other
Authors
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Supports vagal withdrawal with exercise load; leaves open LF/HF ratio validity as autonomic marker during dynamic exercise.
How do exercise load and breathing frequency affect heart rate and blood pressure variability in healthy subjects?
Spectral analysis confirms vagal withdrawal during exercise and suggests the LF/HF ratio is not a reliable indicator of cardiovascular autonomic modulation during dynamic exercise.
Cottin et al. (1999) studied this question.
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