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The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task
The very low-frequency (VLF) band of heart rate variability (HRV) has different characteristics compared with other HRV components. Here we investigated differences in HRV changes after a mental stress task. After the task, the high-frequency (HF) band and ratio of high- to low-frequency bands (LF/H...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5555691/ https://www.ncbi.nlm.nih.gov/pubmed/28806776 http://dx.doi.org/10.1371/journal.pone.0182611 |
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author | Usui, Harunobu Nishida, Yusuke |
author_facet | Usui, Harunobu Nishida, Yusuke |
author_sort | Usui, Harunobu |
collection | PubMed |
description | The very low-frequency (VLF) band of heart rate variability (HRV) has different characteristics compared with other HRV components. Here we investigated differences in HRV changes after a mental stress task. After the task, the high-frequency (HF) band and ratio of high- to low-frequency bands (LF/HF) immediately returned to baseline. We evaluated the characteristics of VLF band changes after a mental stress task. We hypothesized that the VLF band decreases during the Stroop color word task and there would be a delayed recovery for 2 h after the task (i.e., the VLF change would exhibit a “slow recovery”). Nineteen healthy, young subjects were instructed to rest for 10 min, followed by a Stroop color word task for 20 min. After the task, the subjects were instructed to rest for 120 min. For all subjects, R-R interval data were collected; analysis was performed for VLF, HF, and LF/HF ratio. HRV during the rest time and each 15-min interval of the recovery time were compared. An analysis of the covariance was performed to adjust for the HF band and LF/HF ratio as confounding variables of the VLF component. HF and VLF bands significantly decreased and the LF/HF ratio significantly increased during the task compared with those during rest time. During recovery, the VLF band was significantly decreased compared with the rest time. After the task, the HF band and LF/HF ratio immediately returned to baseline and were not significantly different from the resting values. After adjusting for HF and LF/HF ratio, the VLF band had significantly decreased compared with that during rest. The VLF band is the “slow recovery” component and the HF band and LF/HF ratio are the “quick recovery” components of HRV. This VLF characteristic may clarify the unexplained association of the VLF band in cardiovascular disease prevention. |
format | Online Article Text |
id | pubmed-5555691 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-55556912017-08-28 The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task Usui, Harunobu Nishida, Yusuke PLoS One Research Article The very low-frequency (VLF) band of heart rate variability (HRV) has different characteristics compared with other HRV components. Here we investigated differences in HRV changes after a mental stress task. After the task, the high-frequency (HF) band and ratio of high- to low-frequency bands (LF/HF) immediately returned to baseline. We evaluated the characteristics of VLF band changes after a mental stress task. We hypothesized that the VLF band decreases during the Stroop color word task and there would be a delayed recovery for 2 h after the task (i.e., the VLF change would exhibit a “slow recovery”). Nineteen healthy, young subjects were instructed to rest for 10 min, followed by a Stroop color word task for 20 min. After the task, the subjects were instructed to rest for 120 min. For all subjects, R-R interval data were collected; analysis was performed for VLF, HF, and LF/HF ratio. HRV during the rest time and each 15-min interval of the recovery time were compared. An analysis of the covariance was performed to adjust for the HF band and LF/HF ratio as confounding variables of the VLF component. HF and VLF bands significantly decreased and the LF/HF ratio significantly increased during the task compared with those during rest time. During recovery, the VLF band was significantly decreased compared with the rest time. After the task, the HF band and LF/HF ratio immediately returned to baseline and were not significantly different from the resting values. After adjusting for HF and LF/HF ratio, the VLF band had significantly decreased compared with that during rest. The VLF band is the “slow recovery” component and the HF band and LF/HF ratio are the “quick recovery” components of HRV. This VLF characteristic may clarify the unexplained association of the VLF band in cardiovascular disease prevention. Public Library of Science 2017-08-14 /pmc/articles/PMC5555691/ /pubmed/28806776 http://dx.doi.org/10.1371/journal.pone.0182611 Text en © 2017 Usui, Nishida http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Usui, Harunobu Nishida, Yusuke The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title | The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title_full | The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title_fullStr | The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title_full_unstemmed | The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title_short | The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
title_sort | very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5555691/ https://www.ncbi.nlm.nih.gov/pubmed/28806776 http://dx.doi.org/10.1371/journal.pone.0182611 |
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