increased cushioning = increased impact forces (GRF)

increased impact forces = increased injuries?

possibly not...

footwear can impact injury and biomechanics but may not be the primary factor

a nice recap of the state of what we currently know about shoes, design and cushioning.

http://lermagazine.com/cover_story/running-shoes-and-injury-risk-rethinking-the-importance-of-cushioning-and-pronation