Figure 1. Physical exercise results in splanchnic hypoperfusion and intestinal cell damage.

A) Gastric tonometry shows decreased splanchnic perfusion during cycling and post cycling (n = 9). B) Plasma I-FABP levels reflect the development of intestinal epithelial cell damage during cycling and post cycling in healthy volunteers (n = 20). C) Normalized plasma I-FABP levels measured during exercise tonometry correlate significantly with the normalized values of splanchnic hypoperfusion (gap_g-a pCO₂ t-20 min) in healthy men (samples from 9 men). Data are mean ± SEM. Different from baseline (t = 0) (* p<0.01, ** p<0.001, *** p<0.0001).