Fig. 2From: Interobserver variability of ventilatory anaerobic threshold in asymptomatic volunteersBland-Altman plots of ventilatory anaerobic threshold (expressed as VO2@AT) determined by two physician readers in study phase 1, (a) before and (b) after consensus discussion (n = 522 data sets). Upper and lower plots show percentage difference and difference in mL/min, respectively. SD = standard deviation; VO2@AT = oxygen uptake at the anaerobic thresholdBack to article page