 5 In this classification: a rearfoot strike (heel strike) has the initial center of pressure in the rear third of the shoe (rear 1/3 of shoe length) ;
<meaning-changed>  5 In this classification: a rearfoot strike (heel strike) has the initial center of pressure in the rear third of the shoe (rear 1/3 of shoe length) ;
 Lieberman, Daniel. Running Before the Modern Running Shoe. Harvard University. Retrieved 2 December 2020. In this classification: a rearfoot strike (heel strike) has the initial center of pressure in the rear third of the shoe (rear 1/3 of shoe length) ;