Figure 3. Integrated EMG (iEMG) in vastus lateralis and vastus medialis at the 17th, 25th and 40th min of exercise with 2 and 1 leg at similar oxygen uptake per leg (n = 12). § and §§ denote differences between conditions; p < 0.05 and p< 0.01, respectively. * denotes differences from the 17th min, p < 0.05.