Compared to the CB week , during the EB week , a ) feeling of fullness was greater ( P < 0.05 ) on day 1 but not on day 7 ; b ) energy intake was not significantly lower on either day ; c ) right before lunch , acylated ghrelin was lower and PYY3-36 was higher on day 1 ( P < 0.01 and < 0.002 , respectively ) but not on day 7 ; d ) PYY3-36 , but not ghrelin , showed greater rise between breakfast and lunch on days 1 ( P < 0.001 ) and 7 ( P < 0.01 ) .