The effect of 12 week-maximum fat oxidation (FATmax) intensity exercise on microvascular function in obese patients with nonalcoholic fatty liver disease and its mechanism

Fifty-four obese patients with non-alcoholic fatty liver disease (NAFLD) were selected for this study were randomly divided into an exercise group (16 men and 11 women, mean age 21.3 ± 1.0) and control group (16 men and 11 women, mean age 21.8 ± 0.8). The exercise group underwent a 12-week FATmax exercise intervention, while the control group did not engage in any type of systematic physical activity. The controlled diet was given to both groups. After the test, the microvascular reactivity of the exercise group was significantly higher than that of the control group (p < 0.05). After the experiment, the concentration of malondialdehyde (MDA), the activity of catalase (CAT) and the activity of exercise group were significantly lower than those of the control group (p < 0.05); and in contrast the activities of total superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) were significantly higher than those of the control group (p< 0.05). The change in microcirculation function caused by 12-week FATmax intensity exercise may have an interaction mechanism with oxidative stress and antioxidant system function, and may improve the microvascular reactivity of obese NAFLD patients. In addition, also may improve of oxidative stress and antioxidant system functions.