Six younger , lean men ( mean ( s.d. ) age 27.0 ( 2.9 ) y ; weight 74.7 ( 3.9 ) kg ; height 1.78 ( 0.03 ) m ; body mass index ( BMI ) 23.6 ( 1.1 ) kg/m2 ) and six older , overweight men ( mean ( s.d. ) age 39.7 ( 2.9 ) y ; weight 89.2 ( 4.4 ) kg ; height 1.78 ( 0.04 ) m ; BMI 28.1 ( 0.5 ) kg/m2 ) were each studied three times during a 9 day protocol , whilst resident in the Human Nutrition Unit .
