Berntson, G.G., Thomas Bigger Jr., J., Eckberg, D.L., Grossman, P., Kaufmann, P.G., Malik, M., Nagaraja, H.N., Porges, S.W., Saul, J.P., Stone, P.H. and Van der Molen, M.W. (1997) Heart Rate Variability: Origins, Methods, and Interpretive Caveats. Psychophysiology, 34, 623-648.
https://doi.org/10.1111/j.1469-8986.1997.tb02140.x

has been cited by the following article:

• TITLE: Autonomic Function in Individuals with Slow Heart Rate Response following an Exercise Stress Test

  AUTHORS: Itai Goldfarb, Kobi Serr, Shlomo Segev, Joseph Shemesh, Ilan Goldenberg, Mickey Scheinowitz

  KEYWORDS: Heart Rate, Heart Rate Recovery, Heart Rate Variability, Exercise Stress Test

  JOURNAL NAME: World Journal of Cardiovascular Diseases, Vol.12 No.6, June 14, 2022

  ABSTRACT: Objective: To examine the autonomic function using HRV measures in apparently healthy individuals undergoing exercise stress test (EST) and demonstrating slow HRR response. Methods: HRV was measured with 12 lead ECGs during graded EST and analyzed via a post-processing method. Autonomic function was determined by Power Spectral Analysis of the very low frequency (VLF), low frequency (LF), high frequency (HF), and the ratio of LF/HF. We correlated HRV indices with resting, exercise, and recovery data. Results: No differences were found in anthropometric measurements, peak EST HR, and METS between individuals with slow HRR (below 18 b/min) compared with controls (HRR > 18 b/min). Only the VLF component of the HRV indices was statistically different (p = 0.03) at one-minute post-exercise compared with controls. Additionally, a significant correlation between HRR and resting LF and HF indices was found in the individuals with slow HRR but not in the controls. Conclusion: In apparently healthy individuals with slow HRR post-EST, autonomic function did not demonstrate any differences at any phase of the EST, including at one minute of recovery. However, a significant correlation was found between resting LF and HF powers and HRR in individuals with slow vagal reactivation post-exercise. The clinical and prognostic implications of such observation deserve further investigation.