<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "The relationship of muscle oxygen saturation analyzer with other monitoring and quantification tools in a maximal incremental treadmill test"^^ . "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).\n\nMethods: 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.\n\nResults: 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).\n\nDiscussion: 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.\n\nConclusion: 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."^^ . "2023-05" . . "14" . . "Frontiers in Physiology"^^ . . . "1664042X" . . . . . . . . . . . . . . . . "Josep"^^ . "Alemany Iturriaga"^^ . "Josep Alemany Iturriaga"^^ . . "Martín"^^ . "Barcala Furelos"^^ . "Martín Barcala Furelos"^^ . . "Florent"^^ . "Osmani"^^ . "Florent Osmani"^^ . . "Carlos"^^ . "Lago-Fuentes"^^ . "Carlos Lago-Fuentes"^^ . . . . . "HTML Summary of #7167 \n\nThe relationship of muscle oxygen saturation analyzer with other monitoring and quantification tools in a maximal incremental treadmill test\n\n" . "text/html" . . . "Physical Education and Sport"@en . "Educación física y el deporte"@es . .