There was no significant between-group difference in the change in the peak knee adduction moment ( mean difference 0.13 Nm / [ body weight height ] % [ 95 % confidence interval ( 95 % CI ) -0.08 , 0.33 ] ) , pain ( mean difference 2.4 mm [ 95 % CI -6.0 , 10.8 ] ) , or physical function ( mean difference -0.8 units [ 95 % CI -4.0 , 2.4 ] ) .