Figure 3. Relationship between the evoked twitch force (%MVC: y-axis) to voluntary force (%MVC: x-axis). This relationship fitted a cubic equation for the electrical stimulation (Fitting Model: y=a+ax+ax+ax, a=12.57, a=-0.089, a=-0.0021, a=0.00002, R=0.99) and a quadratic equation for the magnetic stimulation (Fitting Model: y= a+ ax+ ax, a=10.67, a=-0.19, a=0.0009, R=0.99). Data are presented as mean±SEM from 8 participants.