Determination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopy

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dc.coverageDOI: 10.3390/life12030444
dc.creatorContreras-Briceño, Felipe
dc.creatorEspinosa-Ramirez, Maximiliano
dc.creatorKeim-Bagnara, Vicente
dc.creatorCarreño-Román, Matías
dc.creatorRodríguez-Villagra, Rafael
dc.creatorVillegas-Belmar, Fernanda
dc.creatorViscor, Ginés
dc.creatorGabrielli, Luigi
dc.creatorAndía, Marcelo E.
dc.creatorAraneda, Oscar F.
dc.creatorHurtado, Daniel E.
dc.date2022
dc.date.accessioned2025-11-18T19:41:53Z
dc.date.available2025-11-18T19:41:53Z
dc.description<p>This study aimed to evaluate if the changes in oxygen saturation levels at intercostal muscles (SmO<sub>2</sub>-m.intercostales) assessed by near-infrared spectroscopy (NIRS) using a wearable device could determine the respiratory compensation point (RCP) during exercise. Fifteen healthy competitive. triathletes (eight males; 29 ± 6 years; height 167.6 ± 25.6 cm; weight 69.2 ± 9.4 kg; VO<sub>2</sub>-máx 58.4 ± 8.1 mL·kg<sup>−1·min−1</sup>) were evaluated in a cycle ergometer during the maximal oxygen-uptake test (VO<sup>.</sup><sub>2</sub>-máx), while lung ventilation (VE),<sup>.</sup> power output (watts, W) and SmO<sub>2</sub>-m.intercostales were measured. RCP was determined by visual method (RCP<sub>visual</sub>: changes at ventilatory equivalents (VE·<sup>.</sup> VCO<sup>.−1</sup>. 2, VE·VO<sup>.−1</sup><sub>2</sub>) and end-tidal respiratory pressure (PetO<sub>2</sub>, PetCO<sub>2</sub>) and NIRS method (RCP<sub>NIRS</sub>: breakpoint of fall in SmO<sub>2</sub>-m.intercostales). During exercise, SmO<sub>2</sub>-m.intercostales decreased continuously showing a higher decrease when VE<sup>.</sup> increased abruptly. A good agreement between methods used to determine RCP was found (visual vs NIRS) at %VO<sup>.</sup>.. 2-máx, VO<sub>2</sub>, VE, and W (Bland-Altman test). Correlations were found to each parameters analyzed (r = 0.854; r = 0.865; r = 0.981; and r = 0,968; respectively. p &lt; 0.001 in all variables, Pearson test), with no differences (p &lt; 0.001 in all variables, Student’s t-test) between methods used (RCP<sub>visual</sub> and RCP<sub>NIRS</sub>). We concluded that changes at SmO<sub>2</sub>-m.intercostales measured by NIRS could adequately determine RCP in triathletes.</p>eng
dc.descriptionThis study aimed to evaluate if the changes in oxygen saturation levels at intercostal muscles (SmO2-m.intercostales) assessed by near-infrared spectroscopy (NIRS) using a wearable device could determine the respiratory compensation point (RCP) during exercise. Fifteen healthy competitive. triathletes (eight males; 29 ± 6 years; height 167.6 ± 25.6 cm; weight 69.2 ± 9.4 kg; VO2-máx 58.4 ± 8.1 mL·kg−1·min−1) were evaluated in a cycle ergometer during the maximal oxygen-uptake test (VO.2-máx), while lung ventilation (VE),. power output (watts, W) and SmO2-m.intercostales were measured. RCP was determined by visual method (RCPvisual: changes at ventilatory equivalents (VE·. VCO.−1. 2, VE·VO.−12) and end-tidal respiratory pressure (PetO2, PetCO2) and NIRS method (RCPNIRS: breakpoint of fall in SmO2-m.intercostales). During exercise, SmO2-m.intercostales decreased continuously showing a higher decrease when VE. increased abruptly. A good agreement between methods used to determine RCP was found (visual vs NIRS) at %VO... 2-máx, VO2, VE, and W (Bland-Altman test). Correlations were found to each parameters analyzed (r = 0.854; r = 0.865; r = 0.981; and r = 0,968; respectively. p &lt; 0.001 in all variables, Pearson test), with no differences (p &lt; 0.001 in all variables, Student’s t-test) between methods used (RCPvisual and RCPNIRS). We concluded that changes at SmO2-m.intercostales measured by NIRS could adequately determine RCP in triathletes.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/d1717503-4bb2-47c6-b6d3-bd2c9b7cde39
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/52047
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.12 (2022) nr.3 p.444
dc.subjectexercise
dc.subjectnear-infrared spectroscopy
dc.subjectoxygen uptake
dc.subjectrespiratory compensation point
dc.subjectrespiratory muscles
dc.subjectExercise; near-infrared
dc.subjectSpectroscopy
dc.subjectOxygen uptake
dc.subjectRespiratory compensation point
dc.subjectRespiratory muscles
dc.titleDetermination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopyeng
dc.typeArticleeng
dc.typeArtículospa
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