What are those metrics?
Impact force and loading rate
Your gait is divided in different phases:
- When your foot is on the ground: absorption and propulsion phases
- When your foot is in the air: swing phase
Impact force if the force applied by your foot on the ground during the absorption phase. Loading rate is the speed at which the impact force is applied. Together they quantify the shocks sustained by your whole body.
Pronation refers to the inward roll of the foot, whereas supination is the opposite of pronation and refers to the outward roll of the foot.
How should I use them?
Impact force, loading rate and pronation/supination are mainly related to injuries. They do not have a direct role in performance.
We have a complete section which lists the most common injuries and their related metrics. Please refer to this section to get more details on how to use those metrics!