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Daily Heart Rate Variability before and after Concussion in an American College Football Player

This case report demonstrates the effects of sport-related concussion (SRC) on heart rate variability (HRV) in an American college football player. Daily measures of resting, ultra-short natural logarithm of the root mean square of successive differences (LnRMSSD), subjective wellbeing, and Player L...

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Autores principales: Flatt, Andrew A., Wilkerson, Gary B., Allen, Jeff R., Keith, Clay M., Esco, Michael R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572754/
https://www.ncbi.nlm.nih.gov/pubmed/31035597
http://dx.doi.org/10.3390/sports7050097
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author Flatt, Andrew A.
Wilkerson, Gary B.
Allen, Jeff R.
Keith, Clay M.
Esco, Michael R.
author_facet Flatt, Andrew A.
Wilkerson, Gary B.
Allen, Jeff R.
Keith, Clay M.
Esco, Michael R.
author_sort Flatt, Andrew A.
collection PubMed
description This case report demonstrates the effects of sport-related concussion (SRC) on heart rate variability (HRV) in an American college football player. Daily measures of resting, ultra-short natural logarithm of the root mean square of successive differences (LnRMSSD), subjective wellbeing, and Player Load were obtained each training day throughout a 4-week spring camp and 4 weeks of preseason training. SRC occurred within the first 2 weeks of the preseason. During spring camp and preseason pre-SRC, the athlete demonstrated minimal day-to-day fluctuations in LnRMSSD, which increased post-SRC (LnRMSSD coefficient of variation pre-SRC ≤ 3.1%, post-SRC = 5.8%). Moderate decrements in daily-averaged LnRMSSD were observed post-SRC relative to pre-SRC (Effect Size ± 90% Confidence Interval = −1.12 ± 0.80), and the 7-day rolling average fell below the smallest worthwhile change for the remainder of the preseason. LnRMSSD responses to SRC appeared similar to trends associated with stress and training fatigue. Therefore, performance and sports medicine staff should maintain regular communication regarding player injury and fatigue status so that HRV can be interpreted in the appropriate context. Detection and monitoring of autonomic dysregulation post-SRC may require near-daily assessment, as LnRMSSD showed greater daily fluctuations rather than chronic suppression following the head injury.
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spelling pubmed-65727542019-06-18 Daily Heart Rate Variability before and after Concussion in an American College Football Player Flatt, Andrew A. Wilkerson, Gary B. Allen, Jeff R. Keith, Clay M. Esco, Michael R. Sports (Basel) Case Report This case report demonstrates the effects of sport-related concussion (SRC) on heart rate variability (HRV) in an American college football player. Daily measures of resting, ultra-short natural logarithm of the root mean square of successive differences (LnRMSSD), subjective wellbeing, and Player Load were obtained each training day throughout a 4-week spring camp and 4 weeks of preseason training. SRC occurred within the first 2 weeks of the preseason. During spring camp and preseason pre-SRC, the athlete demonstrated minimal day-to-day fluctuations in LnRMSSD, which increased post-SRC (LnRMSSD coefficient of variation pre-SRC ≤ 3.1%, post-SRC = 5.8%). Moderate decrements in daily-averaged LnRMSSD were observed post-SRC relative to pre-SRC (Effect Size ± 90% Confidence Interval = −1.12 ± 0.80), and the 7-day rolling average fell below the smallest worthwhile change for the remainder of the preseason. LnRMSSD responses to SRC appeared similar to trends associated with stress and training fatigue. Therefore, performance and sports medicine staff should maintain regular communication regarding player injury and fatigue status so that HRV can be interpreted in the appropriate context. Detection and monitoring of autonomic dysregulation post-SRC may require near-daily assessment, as LnRMSSD showed greater daily fluctuations rather than chronic suppression following the head injury. MDPI 2019-04-27 /pmc/articles/PMC6572754/ /pubmed/31035597 http://dx.doi.org/10.3390/sports7050097 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Case Report
Flatt, Andrew A.
Wilkerson, Gary B.
Allen, Jeff R.
Keith, Clay M.
Esco, Michael R.
Daily Heart Rate Variability before and after Concussion in an American College Football Player
title Daily Heart Rate Variability before and after Concussion in an American College Football Player
title_full Daily Heart Rate Variability before and after Concussion in an American College Football Player
title_fullStr Daily Heart Rate Variability before and after Concussion in an American College Football Player
title_full_unstemmed Daily Heart Rate Variability before and after Concussion in an American College Football Player
title_short Daily Heart Rate Variability before and after Concussion in an American College Football Player
title_sort daily heart rate variability before and after concussion in an american college football player
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572754/
https://www.ncbi.nlm.nih.gov/pubmed/31035597
http://dx.doi.org/10.3390/sports7050097
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