GPT and obesity due to melanocortin 4 receptor deficiency: Its main manifestations of NAFLD include obesity, high VF content, changes in metabolic parameters such as high TG, HDL, LDL, ALT, and AST, and CRF are strongly associated with changes in liver fat and are useful indicators for determining changes in liver fat caused by exercise interventions.[29,30] Insufficient exercise capacity is also an important reason for further development of NAFLD-related indicators.