Average levels of albumin and prealbumin increased significantly ( from the beginning to the end of the program ) , 35.5 4.52 g/l vs 36.19 4.1 g/l and 0.160 0.05 vs 0.174 0.04 g/l ( p < 0.05 ) , vitamin D levels increased from 31.2 16.4 nmol/l to 36.8 17.7 nmol/l ( p < 0.001 ) and HDL-cholesterol levels increased from 1.29 0.33 mmol/l to 1.35 0.35 mmol/l ( p < 0.001 ) .