After a 2-wk run-in period , participants were randomly assigned to consume either a calorie-restricted high-carbohydrate ( HC ) diet ( 60 % -65 % of energy from carbohydrates and 20 % -25 % from fats ) or a calorie-restricted moderately restricted carbohydrate ( MRC ) diet ( 43 % -47 % of total calories as carbohydrate and 36 % -40 % as dietary fats ) for 6 wk .