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The way your feet land when you run can cause serious injuries. Photo Credit iStock/Halfpoint. Underpronation, also known as supination, is a foot-positioning problem encountered by runners and other athletes who run during their sport.
Pronation describes the way in which your foot moves as you walk or run. Generally, as you step down on your heel your foot rolls inward as you move forward; this helps your body absorb impact, especially when running.Underpronation means you aren't rolling enough, while overpronation means you are rolling too much.While some pronation is natural, too much can lead to injuries including problems with your feet, hips and back.enerally, as you step down on your heel your foot rolls inward as you move forward; this helps your body absorb impact, especially when running. Underpronation means you aren't rolling enough, while overpronation means you are rolling too much.