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- W1836304094 abstract "For assessing the cardiopulmonary integration during aerobic exercise, anaerobic threshold (AT) has been an important index of performance. Additionally, the respiratory compensation threshold (RCT) has been useful for determining performance of quasi-maximum intensities (Wasserman et al., 1983). The aim of this study to identify the anaerobic threshold (AT) obtained from the V-slope method, visual inspection of oxihemoglobin (O2Hb) and deoxihemoglobin (HHb) curves and compare findings with the heteroscedastic (HS) method applied to VCO2, heart rate (HR) and HHb data. Fourteen healthy-men were subjected to cardiopulmonary testing (CPX) on a cycle-ergometer until physical exhaustion. Biological signals collected during CPX included: ventilatory variables; spectroscopy by NIRS; and HR by a cardiofrequencymeter. We observed temporal equivalence and similar values of power, VO2 (mL/min), VO2 (mL kg-1 min-1) and HR at AT by the detection methods performed. In addition, by the Bland-Altman plot (Fig. 1), HR confirmed the good agreement between the methods with biases between -1.3 and 3.5 bpm.![Figure][1] In conclusion: (i) all detection methods were sensitive in identifying AT, including the HS applied to HR and (ii) the methods showed a good correlation in the identification of AT. Thus the results support the HR seems to be a valid parameter in determining the AT of the individuals in our study (Grants: FAPESP) [1]: pending:yes" @default.
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- W1836304094 date "2011-09-01" @default.
- W1836304094 modified "2023-10-17" @default.
- W1836304094 title "Late-breaking abstract: Determination of anaerobic threshold through different methodologies during ramp protocol in elderly healthy men" @default.
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