Arquivos brasileiros de cardiologia
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Arq. Bras. Cardiol. · Jun 2010
[Reproducibility of the determination of anaerobic threshold in patients with heart failure].
The anaerobic threshold (AT) provides information on functional capacity in heart failure (HF). However, the visual determination of the AT by ventilatory methods is subjective, being susceptible to differences between examiners. ⋯ AT determination by visual-graphic and V-slope methods showed high and moderate inter- and intra-examiner reproducibility, respectively. Moreover, both methods showed good agreement when compared with each other. These results suggest that both methods can be used in a reproducible way in AT assessment of patients with mild to moderate HF.