Acute Fatigue Impairs Heart Rate Variability and Resting Muscle Oxygen Consumption Kinetics

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dc.contributor.authorVasquez-Bonilla, Aldo A.
dc.contributor.authorYáñez-Sepúlveda, Rodrigo
dc.contributor.authorTuesta, Marcelo
dc.contributor.authorMartin, Eduardo Báez-San
dc.contributor.authorMonsalves-Álvarez, Matías
dc.contributor.authorOlivares-Arancibia, Jorge
dc.contributor.authorDuclos-Bastías, Daniel
dc.contributor.authorRecabarren-Dueñas, Catalina
dc.contributor.authorAlacid, Fernando
dc.date.accessioned2024-11-11T13:35:29Z
dc.date.available2024-11-11T13:35:29Z
dc.date.issued2024-10
dc.descriptionIndexación: Scopus.
dc.description.abstractFeatured Application: Importantly, measurements obtained through VOT-NIRS can vary significantly post-exercise, which should be considered by researchers before application. This study evaluated the influence of acute fatigue on heart rate variability (HRV) and muscle oxygen saturation (SmO2) at rest, as well as the reliability of SmO2 data measured using near-infrared spectroscopy (NIRS) during a vascular occlusion test (VOT). Twelve physically active subjects participated. Measurements included perceived muscle soreness using the visual analog scale (VAS pain), HRV parameters, variables of resting SmO2 (desaturation and resaturation), and reoxygenation kinetics (mean response time, MRT) through a VOT-NIRS located in the vastus lateralis (VL). Measurements were taken at three points: 24 h before, before exhaustive exercise, and 30 min after exhaustive exercise. The results indicated that acute fatigue increased resting muscle oxygen consumption in desaturation (+22 SmO2) and resaturation (+18 SmO2), improved MRT (−15 s), and elevated sympathetic nervous system (SNS) activity, as observed in the R-R interval (−262 ms) and SNS index (+0.5). HRV significantly influenced desaturation (r2 = 0.69), resaturation (r2 = 0.60), and MRT (r2 = 0.54). Reliability was established with an ICC of 0.49 and 0.63 for desaturation and resaturation, respectively. Real changes in desaturation and resaturation should be considered ≥ 7% SmO2 at rest and ≥ 11% SmO2 to avoid daily fatigue interference. In conclusion, acute fatigue increases resting SmO2 consumption and is associated with higher SNS activity and increased VAS pain.
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85207495662&origin=resultslist&sort=plf-f&src=s&sid=f06abd21ed9fd72fccf5b29afb02c858&sot=aff&sdt=cl&cluster=scosubjabbr%2C%22PHYS%22%2Ct%2C%22EART%22%2Ct%2C%22CHEM%22%2Ct%2C%22ENGI%22%2Ct%2C%22MATE%22%2Ct%2Bscolang%2C%22English%22%2Ct%2Bscofreetoread%2C%22all%22%2Ct&s=AF-ID%2860002636%29+AND+SUBJAREA%28PHYS%29&sl=34&sessionSearchId=f06abd21ed9fd72fccf5b29afb02c858&relpos=8
dc.identifier.citationApplied Sciences (Switzerland )Open Access Volume 14, Issue 20 October 2024 Article number 9166
dc.identifier.doi10.3390/app14209166
dc.identifier.issn2076-3417
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/61847
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectMuscle fatigue
dc.subjectMuscle oxygenation
dc.subjectNear-infrared spectroscopy
dc.subjectSympathetic nervous system
dc.subjectVascular occlusion
dc.titleAcute Fatigue Impairs Heart Rate Variability and Resting Muscle Oxygen Consumption Kinetics
dc.typeArtículo
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