Figure S1. Absolute static lung volumes in the surgery and lifestyle group at baseline and 1 year after treatment. DLCO, diffusing capacity for carbon monoxide; DLCO/VA, DLCO/alveolar volume; ERV, expiratory reserve volume; FEV1, forced expiratory volume in 1 s; FRC, functional residual capacity; FVC, forced vital capacity; IC, inspiratory capacity; RV, residual volume; TLC, total lung capacity; VC, vital capacity.

Figure S2. Correlations between changes in arterial pO2, static and dynamic lung volumes and changes in body mass index, waist circumference and waist-to-hip ratio. r = Pearson's correlation coefficient. *P < 0.05, **P < 0.01. Abbreviations, see Supporting Information Fig. S1.

Table S1. Measures of central adiposity and inflammatory markers at baseline and 1 year after gastric bypass surgery and lifestyle intervention.

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