For the physical activity group compared with the control group , there was a 40 % ( 95 % confidence interval 13 % to 73 % ) , 34 % ( 6 % to 69 % ) , and 46 % ( 12 % to 91 % ) greater increase in self reported minutes carrying out physical activity per week from baseline to one week , four weeks , and six weeks post-quit day , respectively .