APA
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Contreras–Briceño, F., Espinosa-Ramírez, M., Keim-Bagnara, V., Carreño-Román, M., Rodríguez-Villagra, R., Villegas-Belmar, F., … Hurtado, D. (2022). Determination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopy. Life.
Chicago/Turabian
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Contreras–Briceño, Felipe, Maximiliano Espinosa-Ramírez, Vicente Keim-Bagnara, Matías Carreño-Román, Rafael Rodríguez-Villagra, Fernanda Villegas-Belmar, Ginés Viscor, et al. “Determination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopy.” Life (2022).
MLA
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Contreras–Briceño, Felipe, et al. “Determination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopy.” Life, 2022.
BibTeX Click to copy
@article{felipe2022a,
title = {Determination of the Respiratory Compensation Point by Detecting Changes in Intercostal Muscles Oxygenation by Using Near-Infrared Spectroscopy},
year = {2022},
journal = {Life},
author = {Contreras–Briceño, Felipe and Espinosa-Ramírez, Maximiliano and Keim-Bagnara, Vicente and Carreño-Román, Matías and Rodríguez-Villagra, Rafael and Villegas-Belmar, Fernanda and Viscor, Ginés and Gabrielli, Luigi and Andía, M. and Araneda, O. and Hurtado, D.}
}
This 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; V˙O2-máx 58.4 ± 8.1 mL·kg−1·min−1) were evaluated in a cycle ergometer during the maximal oxygen-uptake test (V˙O2-máx), while lung ventilation (V˙E), power output (watts, W) and SmO2-m.intercostales were measured. RCP was determined by visual method (RCPvisual: changes at ventilatory equivalents (V˙E·V˙CO2−1, V˙E·V˙O2−1) 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 V˙E increased abruptly. A good agreement between methods used to determine RCP was found (visual vs NIRS) at %V˙O2-máx, V˙O2, V˙E, 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 < 0.001 in all variables, Pearson test), with no differences (p < 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.