Osmani, Florent and Lago-Fuentes, Carlos and Alemany Iturriaga, Josep and Barcala Furelos, Martín florent.osmani@uneatlantico.es, carlos.lago@uneatlantico.es, josep.alemany@uneatlantico.es, martin.barcala@uneatlantico.es (2023) The relationship of muscle oxygen saturation analyzer with other monitoring and quantification tools in a maximal incremental treadmill test. Frontiers in Physiology, 14. ISSN 1664-042X
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Abstract
Introduction: The study aims to explore whether NIRS derived data can be used to identify the second ventilatory threshold (VT2) during a maximal incremental treadmill test in non-professional runners and to determine if there is a correlation between SmO2 and other valid and reliable exercise performance assessment measures or parameters for maximal incremental test, such as lactate concentration (LT), RPE, HR, and running power (W). Methods: 24 participants were recruited for the study (5 women and 19 men). The devices used consisted of the following: i) a muscle oxygen saturation analyzer placed on the vastus lateralis of the right leg, ii) the Stryd power meter for running, iii) the Polar H7 heart rate band; and iv) the lactate analyzer. In addition, a subjective perceived exertion scale (RPE 1-10) was used. All of the previously mentioned devices were used in a maximal incremental treadmill test, which began at a speed of 8 km/h with a 1% slope and a speed increase of 1.2 km/h every 3 min. This was followed by a 30-s break to collect the lactate data between each 3-min stage. Spearman correlation was carried out and the level of significance was set at p < 0.05. Results: The VT2 was observed at 87,41 ± 6,47% of the maximal aerobic speed (MAS) of each participant. No relationship between lactate data and SmO2 values (p = 0.076; r = −0.156) at the VT2 were found. No significant correlations were found between the SmO2 variables and the other variables (p > 0.05), but a high level of significance and strong correlations were found between all the following variables: power data (W), heart rate (HR), lactate concentration (LT) and RPE (p < 0.05; r > 0.5). Discussion: SmO2 data alone were not enough to determine the VT2, and there were no significant correlations between SmO2 and the other studied variables during the maximal incremental treadmill test. Only 8 subjects had a breakpoint at the VT2 determined by lactate data. Conclusion: The NIRS tool, Humon Hex, does not seem to be useful in determining VT2 and it does not correlate with the other variables in a maximal incremental treadmill test.
| Item Type: | Article |
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| Uncontrolled Keywords: | heart rate, lactate, NIRS, power meter, RPE |
| Subjects: | Subjects > Physical Education and Sport |
| Divisions: | Europe University of Atlantic > Research > Scientific Production |
| Depositing User: | Sr Bibliotecario |
| Date Deposited: | 18 May 2023 07:29 |
| Last Modified: | 04 Jul 2023 09:43 |
| URI: | http://repositorio.funiber.org/id/eprint/7167 |
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