Figure 6a-h Graphs of mean forces, determined by force plates (dotted line) and pressure insoles (solid line), and mean absolute differences between the force plate and the pressure insole (thicker line) for expert level (n=10) and intermediate level (n=10); High and Low dynamic skiing modes; pitch of 15° (Flat) and 23° (Steep). Each skiing mode includes 20 double turns × n=10 subjects. A) Expert-High-Flat, B) Expert-High-Steep, C) Expert-Low-Flat, D) Expert-Low-Steep, E) Intermediate-High-Flat, F) Intermediate-High-Steep, G) Intermediate-Low-Flat, H) Intermediate-Low-Steep skiing mode. Negative (minus) absolute differences indicate that the forces determined by the FP are greater than the PI and positive (plus) absolute differences indicate that the forces determined by the FP are smaller than the PI.