Key result
During incremental cycling exercise, the Heart rate/LF ratio was positively correlated with noradrenaline (ρ=0.788, p<0.05), blood lactate (ρ=0.802), and carbon dioxide production (ρ=0.903).
Why the study?
The LF/HF ratio in heart rate variability may not accurately reflect sympathetic nervous activity during exercise, creating a need for a valid HRV-based index.
Does the heart rate to LF ratio reflect sympathetic nervous activity during incremental cycling exercise in healthy adults?
Population
15 healthy adults
Authors
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HR/LF ratio may index sympathetic activity during exercise in healthy adults; leaves open validation in patients and prospective studies.
Cross-Sectional (n=15)
Does the heart rate to LF ratio reflect sympathetic nervous activity during incremental cycling exercise in healthy adults?
Effect estimate: ρ = 0.788
p-value: p=<0.05
The heart rate to LF ratio is a valid heart rate variability-based index that reflects sympathetic nervous activity and metabolic responses during incremental exercise.
Tanoue et al. (2021) conducted a cross-sectional in Healthy adults (n=15). Incremental cycling exercise vs. Rest was evaluated on Correlation of Heart rate/LF with noradrenaline levels (ρ = 0.788, p=<0.05). During incremental cycling exercise, the Heart rate/LF ratio was positively correlated with noradrenaline (ρ=0.788, p<0.05), blood lactate (ρ=0.802), and carbon dioxide production (ρ=0.903).
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