Sixty Caucasian men and women -LSB- BMI ( in kg/m ) : @-@ or > @ ; age : @-@ y -RSB- were included in a randomized placebo-controlled study in which fecal energy content ( FEC ) , fecal fat content ( FFC ) , resting energy expenditure , respiratory quotient ( RQ ) , body composition , and physical activity were measured twice ( baseline vs. week @ ) .