Answer: Stiffer air pockets mean less distortion. More distortion takes more time
Step-by-step explanation:
Distortion is the alteration of the characteristics of something. In this case, the characteristics would be the shape of the air pocket that is distorted when the shoe hits the ground with your weight on top of it.
If the air is at a higher pressure and it becomes stiffer, it would allow the air pocket to distort less on the impact. Less distortion would take less time to take place than a higher level of distortion.