Kerrigan, D. C., Franz, J. R., Keenan, G. S., Dicharry, J., Croce, U. D., & Wilder, R. P. (2010). The effect of running shoes on lower extremity joint torques. Physical Medicine and Rehabilitation, 1(12), 1058-1063
This has been all over the media, and I can see where this is going. Instead of a happy medium, a move to track & field type flats across the board. Many athletic injuries to the foot result in permanent mechanical changes that will not like this.