The low-calorie group had lower total daily calorie intake ( 1,307.1 171.8 vs. 1,772.2 315.4 kcal/d , P < .01 ) and significant reductions in body weight ( -5.1 3.3 % , P < .001 ) , fat content ( -12.7 14.1 % , P < .05 ) , and 24-hour urine protein ( -45.2 15.4 % , P < .001 ) .