In the youtube video below you will see a runner in the biomechanics lab running both with shoes and without.
Most prominent observations:
- from heel landing he switches to mid- forefoot landing;
- the impact of the landing decreases;
- his calf muscle has to work harder;
- the muscle on the front of his lower leg (tibialis anterior) as to work less.
A final important observation is at the end of this video: If you take off your shoes and start running barefoot you will change you stride and technique. This makes you prone to injuries. So build it up: barefoot running.
Bron ABC Catalyst