After a 4-wk run-in period where FV intake was limited to < 2 portions/d ( < 160 g/d ) , 92 eligible participants were randomly assigned to 1 of 3 groups : to consume either 2 , 4 , or 7 portions ( equivalent to 160 g , 320 g , or 560 g , respectively ) of FVs daily for 12 consecutive weeks .