Effects of hybrid custom foot orthoses on running economy, running mechanics and comfort: A double-blinded randomized crossover study.

Objective: This study examined the effects of orthotic materials on running economy, running mechanics, and footwear comfort.

Design: A double-blinded randomized crossover study design was used.

Method: Eighteen athletes ran on an instrumented treadmill for six minutes at speeds corresponding to 10 % below their first ventilatory threshold (average: 9.