Types of Pronation
NEUTRAL
Normal Pronation The outside part of the heel makes initial contact with the ground. The foot "rolls" inward about fifteen percent, comes in complete contact with the ground, and can support your body weight without any problem.
source:
runnersworld.com
UNDERPRONATION
Underpronation Again, the outside of the heel makes initial contact with the ground. But the inward movement of the foot occurs at less than fifteen percent (i.e., there is less rolling in than for those with normal or flat feet).
source:
runnersworld.com
image:
thisrunnersrecipes.com