Average levels of albumin and prealbumin increased significantly ( from the beginning to the end of the program ) , @ @ g/l vs @ @ g/l and @ @ vs @ @ g/l ( p < @ ) , vitamin D levels increased from @ @ nmol/l to @ @ nmol/l ( p < @ ) and HDL-cholesterol levels increased from @ @ mmol/l to @ @ mmol/l ( p < @ ) .