Both Web and print groups had significant changes in physical activity self-efficacy ( Web : t [ 155 ] = 2.58 , p = .01 ; print : t [ 156 ] = 3.11 , p = .002 ) and intentions ( Web : t [ 157 ] = 2.27 , p = .02 ; print : t [ 159 ] = 6.32 , p < or = .001 ) .
