There was no significant between-group difference in the change in the peak knee adduction moment ( mean difference @ Nm / -LSB- body weight height -RSB- % -LSB- @ % confidence interval ( @ % CI ) -@ , @ -RSB- ) , pain ( mean difference @ mm -LSB- @ % CI -@ , @ -RSB- ) , or physical function ( mean difference -@ units -LSB- @ % CI -@ , @ -RSB- ) .