Aims: To analyze the effects of exercise performed at the aerobic/anaerobic transition (Lan) on Non-Alcoholic Hepatic Steatosis (NAHS) markers in type 1 diabetic rats. Methods: Adult Wistar rats were separated into four groups: Sedentary Control (SC), Trained Control (TC), Sedentary Diabetic (SD) and Trained Diabetic (TD). The trained groups swam supporting workloads equivalent to the Lan for one hour/day, five days/week, for eight weeks. Body weight, serum albumin concentrations, glucose

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... trations, Free Fatty Acid (FFA) concentrations, NAHS markers (Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT) and total lipid concentrations in the liver were analyzed. Results: The diabetic groups showed higher serum glucose concentrations and more weight loss compared to the controls, although the TD group was less affected than the SD group. Training resulted in a decrease in serum glucose levels in the diabetic rats. The NAHS markers, total lipid concentrations in the liver and serum albumin concentrations did not differ between the groups. However, the diabetic animals had higher serum FFA levels than the controls. Conclusion: Physical training at Lan attenuates weight loss and improves serum glucose homeostasis in diabetic animals. In addition, serum ALT and AST enzymes proved to be adequate markers of lipid levels in the livers in this animal model. Material and Methods Animals Young male Wistar rats (60 days old at the start of the experiment J o u rn al of L iv e r