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Changes in heart rate variability with respect to exercise intensity and time during treadmill running

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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid52b8d35e-faf4-4de5-88f6-9658f5f1c0f3
dc.contributor.authorHunt, Kenneth J.
dc.contributor.authorSaengsuwan, Jittima
dc.date.accessioned2024-10-08T15:12:27Z
dc.date.available2024-10-08T15:12:27Z
dc.date.issued2018-09-24
dc.description.abstractBACKGROUND: Heart rate variability (HRV) arises from the complex interplay of sympathetic and parasympathetic autonomic regulation of heart rate. Ultra-low frequency (ULF) and very-low frequency (VLF) components of HRV play a crucial role in automatic HR controllers, but these frequency bands have hitherto largely been neglected in HRV studies. The aim of this work was to investigate changes in ULF and VLF heart rate variability with respect to exercise intensity and time during treadmill running. METHODS: RR intervals were determined by ECG in 21 healthy male participants at rest, and during moderate and vigorous-intensity treadmill running; each of these three tests had a duration of 45 min. Time dependence of HRV was investigated for moderate and vigorous running intensities by dividing the constant-speed stages into three consecutive windows of equal duration ([Formula: see text] 14 min), denoted [Formula: see text], [Formula: see text] and [Formula: see text]. ULF and VLF power were computed using Lomb-Scargle power spectral density estimates. RESULTS: For both the ULF and VLF frequency bands, mean power was significantly different between the resting, moderate and vigorous intensity levels (overall [Formula: see text]): mean power was lower for moderate vs. rest ([Formula: see text]), for vigorous vs. rest ([Formula: see text]), and for vigorous vs. moderate ([Formula: see text]). For both ULF and VLF and moderate intensity, mean power was significantly different between the three time windows (overall [Formula: see text] for ULF, overall [Formula: see text] for VLF): for ULF, mean power was lower for [Formula: see text] vs. [Formula: see text] ([Formula: see text]) and for [Formula: see text] vs. [Formula: see text] ([Formula: see text]); for VLF, mean power was lower for [Formula: see text] vs. [Formula: see text] ([Formula: see text]). For ULF and vigorous intensity, there was no significant difference in mean power between the three time windows (overall [Formula: see text]). For VLF and vigorous intensity, mean power was significantly different between [Formula: see text], [Formula: see text] and [Formula: see text] (overall [Formula: see text]): mean power was lower for [Formula: see text] vs. [Formula: see text] ([Formula: see text]) and for [Formula: see text] vs. [Formula: see text] ([Formula: see text]). CONCLUSIONS: The degree of HRV in terms of ULF and VLF power was found to decrease with increasing intensity of exercise. HRV was also observed to decrease over time, but it remains to clarify whether these changes are due to time itself or to increases in HR related to cardiovascular drift. For feedback control applications, attention should be focused on meeting performance targets at low intensity and during the early stages of exercise.
dc.description.numberOfPages12
dc.description.sponsorshipARTORG Center - Gerontechnology and Rehabilitation
dc.identifier.doi10.7892/boris.125378
dc.identifier.pmid30249267
dc.identifier.publisherDOI10.1186/s12938-018-0561-x
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/63417
dc.language.isoen
dc.publisherBioMed Central
dc.relation.ispartofBiomedical engineering online
dc.relation.issn1475-925X
dc.relation.organizationDCD5A442C49BE17DE0405C82790C4DE2
dc.subject.ddc600 - Technology::610 - Medicine & health
dc.subject.ddc600 - Technology::620 - Engineering
dc.titleChanges in heart rate variability with respect to exercise intensity and time during treadmill running
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.issue1
oaire.citation.startPage128
oaire.citation.volume17
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliationARTORG Center - Gerontechnology and Rehabilitation
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation2#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation3#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation4#PLACEHOLDER_PARENT_METADATA_VALUE#
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.date.licenseChanged2019-10-23 14:21:56
unibe.description.ispublishedpub
unibe.eprints.legacyId125378
unibe.journal.abbrevTitleBIOMED ENG ONLINE
unibe.refereedTRUE
unibe.subtype.articlejournal

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