High-frequency heart rate variability

1. Dietary restriction increases high-frequency heart rate variability in rats.

   “the high-frequency component of HRV spectra, a marker for parasympathetic activity, was increased.”

   Animalsat least 1 monthmales

   Caloric restriction and intermittent fasting alter spectral measures of heart rate and blood pressure variability in rats

   FASEB journal : official publication of the Federation of American Societies for Experimental Biology·1 Apr 2006

More on Dietary restriction

1. High-frequency heart rate variability is associated with cognitive flexibility in humans (β = 0.02, 95% CI = 0.00, 0.04, p = .03).

   “and the Dimensional Change Card Sort Test ( β = 0.02, 95% CI = 0.00, 0.04, p = .03), but was not associated with the other tests.”

   Humansheart failure and mild cognitive impairmentn = 54

   Vagal Control and Cognitive Function among Patients with Heart Failure and Mild Cognitive Impairment

   AHA Scientific Sessions 2025 abstract·3 Nov 2025

1. High-frequency heart rate variability is associated with episodic memory in humans (β = 0.02, 95% CI = 0.01, 0.03, p = .001).

   “higher scores on the Picture Sequence Memory Test ( β = 0.02, 95% CI = 0.01, 0.03, p = .001)”

   Humansheart failure and mild cognitive impairmentn = 54

   Vagal Control and Cognitive Function among Patients with Heart Failure and Mild Cognitive Impairment

   AHA Scientific Sessions 2025 abstract·3 Nov 2025

1. High-frequency heart rate variability is associated with fluid cognition in humans (β = 0.02, 95% CI = 0.01, 0.03, p = .01).

   “Higher HF-HRV was associated with higher Fluid Cognition Composite score ( β = 0.02, 95% CI = 0.01, 0.03, p = .01)”

   Humansheart failure and mild cognitive impairmentn = 54

   Vagal Control and Cognitive Function among Patients with Heart Failure and Mild Cognitive Impairment

   AHA Scientific Sessions 2025 abstract·3 Nov 2025