Figure 1. Mean ± SD changes in plasma leptin concentrations during the two cycling protocols (SP and PP) in untrained (UTR) and trained (TR) subjects. SP (45 min): 3 min at 25% of PAP - 21 min at 70% of PAP - 40 min rest - 21 min at 85% of PAP; PP (85 min): 3 min at 25% of PAP - 21 min at 70% - 40 min at 30% of PAP - 21 min at 85% of PAP; CV: Control Value; PAP: Peak Aerobic Power; S: Sample. * P < 0.05 TR vs UTR during the respective protocol.