—a study conducted of elite runners in a 2004 HM race in Japan (75% were heel strikers and only 1% were forefoot strikers) and they try to relate the findings to sub-elite runners.
—there is “no evidence that heel strikers are more injury prone” than midfoot strikers, but consciously altering footstrike does increase the risk of injury.
—there is “no evidence that midfoot runners are faster or perfrom better than heel-strikers”, but consciously altering running mechanics reduces running economy.
—footstrike moves naturally from heel to midfoot to forefoot as you run faster.
—where your feet land relative to your body is more important than how it lands.