Effect of Shoe Cushioning Position and Properties on Running-related Injury Risk

The three running shoe models will be exactly the same, except for their foam properties at the rear and forepart of the shoe, which will differ by 33 and 37%, respectively, while remaining within the range of values of shoes available on the market (linear equivalent stiffness: about 40 to 60 and 50 to 80 N/mm, at the rear and forepart of the shoe, respectively). We expect a difference in shoe weight lower than 30 g between the three versions (for size 42). The difference in cushioning properties between shoe versions will be created by modifying the type of foam and the foaming process.