Participants were randomly assigned to a MSD rich in polyunsaturated fatty acids , fiber , flavonoids and antioxidants ( 60 % of energy from carbohydrate , 25 % from fat , and 15 % from protein , ( n = 24 ) ; or a standard diet ( 55 % of carbohydrate , 30 % from fat and 15 % from protein , ( n = 25 ) , the caloric ingest was individualized .