Scores on the 3MS improved more in the diet ( mean SE : 1.7 0.4 ) , exercise ( 2.8 0.4 ) , and diet-exercise ( 2.9 0.4 ) groups than in the control group ( 0.1 0.4 ) ( between-group P = 0.0001-0 .04 ) ; scores in the diet-exercise group improved more than in the diet group but not more than in the exercise group .