Cadence ( F@ ,@ = @ , P = @ ) , stride length ( F@ ,@ = @ , P < @ ) , walking speed ( F@ ,@ = @ , P < @ ) , anterior-posterior ground reaction force ( F@ ,@ = @ , P = @ ) , peak hip power in preswing ( F@ ,@ = @ , P < @ ) , and peak ankle power at push-off ( F@ ,@ = @ , P = @ ) all improved with respect to time .