At the end of 3 months , the LGIE group had significant reductions in energy intake ( 241.7 + / - 522.4 Kcal , P = 0.037 , ES = 0.463 ) , total carbohydrate ( 48.7 + / - 83.5 g , P = 0.010 , ES = 0.583 ) , GI ( 3.9 + / - 7.1 , P = 0.017 , ES = 0.549 ) and GL ( 39.0 + / - 55.3 , P = 0.003 , ES = 0.705 ) and significant increases in protein ( 3.7 + / - 5.4 g , 0.003 , ES = 0.685 ) and diet fibre ( 4.6 + / - 7.3 g , P = 0.06 ) .