Slow running is a protective strategy to maintain balance when proprioception is compromised.
The consistent theme that is emerging in the running community is that cushioned athletic footwear negatively affects the proprioceptive system in the feet, resulting in impairments in landing behavior judgment and control during running.
Some forefoot running beginners experience ankle injury without having made errors in their technique. The issue, most likely, is actually with their shoes.
A growing body of evidence indicates that cushioned running shoes cause a proprioceptive disorder that results in joint obliteration and biomechanical impairments.