Key result
Acute ethanol intake dose-dependently increased heart rate and the LF/HF ratio while decreasing HRV spectral power during sleep, indicating an inhibition of parasympathetic nerve activity.
Why the study?
Does acute ethanol intake affect heart rate variability and parasympathetic nerve activity during sleep in healthy male university students?
Does acute ethanol intake affect heart rate variability and parasympathetic nerve activity during sleep in healthy male university students?
Acute ethanol intake dose-dependently inhibits parasympathetic nerve activity and increases sympathetic predominance during sleep.
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Acute alcohol may disrupt nocturnal autonomic balance; leaves open arrhythmia risk in drinkers.
Sagawa et al. (2011) studied Healthy (n=10). Ethanol vs. 0 g/kg (control) was evaluated on Heart rate variability (HRV) during sleep (LF, HF, and LF/HF ratio). Acute ethanol intake dose-dependently increased heart rate and the LF/HF ratio while decreasing HRV spectral power during sleep, indicating an inhibition of parasympathetic nerve activity.
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