Mobile Evaluation of Heart Rate Variability using the Diver's Reflex

Mobile Evaluation of HRV

  • Harrison Seltzer Western Michigan Homer Stryker M.D. School of Medicine
  • Melissa Pellman, M.S. Western Michigan Homer Stryker M.D. School of Medicine
  • Raechel Warchock, B.S. Western Michigan M.D. School of Medicine
  • Joseph Billian, M.S. Western Michigan Homer Stryker M.D. School of Medicine Department of Epidemiology and Biostatistics
  • Robert Baker, M.D. PhD Western Michigan Homer Stryker M.D. School of Medicine Department of Sports Medicine and Orthopedic Surgery
Keywords: HRV, RMSSD, LF/HF ratio, Elite HRV, Cor-Sense, Concussion

Abstract

Introduction

HRV is considered a marker of ANS function. It has become a marker of interest in evaluating nervous system function following traumatic brain injury. This study validates prior research using larger sample sizes proposes a model for establishing baseline HRV reactivity in healthy participants.

Methods

62 healthy college athletes were recruited for this study. Following an informed consent process they were evaluated supine using the Elite HRV Cor-sense monitor and platform to record LF/HF ratio and RMSSD over 5 minutes. A bag of ice was placed on their face, then RMSSD and LF/HF ratio were collected over 3 successive 1-minute intervals.

Results

RMSSD was elevated at 1 and 2 minutes (+47.4 ms, P <.0001; +16.5 ms P = .014) following face cooling and fell to baseline at 3 minutes (+4.6 ms, P = 0.52). LF/HF ratio decreased following face cooling at 2 and 3 minutes (change from rest %: 2 minutes: -33%, P=.007; 3 minutes -50%, P=<.0001).

Conclusion

The Elite HRV platform can detect an elevation in RMSSD in the first minute following face cooling with a successive return to baseline in the second and third minutes. It can also detect a consistent decrease in LF/HF following face cooling.

Author Biographies

Melissa Pellman, M.S., Western Michigan Homer Stryker M.D. School of Medicine

Medical Student

Raechel Warchock, B.S., Western Michigan M.D. School of Medicine

Medical Student

Joseph Billian, M.S., Western Michigan Homer Stryker M.D. School of Medicine Department of Epidemiology and Biostatistics

Biostatistician & Consultant

Robert Baker, M.D. PhD, Western Michigan Homer Stryker M.D. School of Medicine Department of Sports Medicine and Orthopedic Surgery

Fellowship Program Director, Sports Medicine Fellowship Program, Department of Family and Community Medicine

Professor, Department of Family and Community Medicine

Professor, Department of Orthopaedic Surgery

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Published
2021-06-30
Section
Research Papers