Fig. 1From: Exercise induced hemoconcentration following spleen contraction in subjects with COPDMean SpO2 and spleen volume (IQR) before and after the 6 min walking test (6MWT) in 24 subjects with COPD. P < 0.001 is indicated with * for SpO2 and P < 0.01 with + for spleen volume compared with pre-walking baseline valuesBack to article page