The Investigation of the Effects of Two Types of Continuous Endurance and Resistance Training on Plasma Levels of Hepatic Enzymes of ALT and AST in Adult Male Rats

It is shown that the level of plasma hepatic enzymes may fluctuate under the effect of exercise. This factor depends on the duration, intensity and type of the training. The aim of this study was to compare the effects of endurance and resistance training at moderate intensity on hepatic enzymes of AST and ALT in adult male wistar rats. This experimental study was conducted with the animal model so 24 adult male wistar rats (8 weeks old with mean body weight of 220-225 gr) were randomly divided into three groups (n=8) of control, continuous endurance and resistance training. 48 hours after the last session of 8-week training protocol, blood samples were gathered. The data using one-way ANOVA showed that plasma levels of both variables significantly increased in continuous endurance group compared to control group (P≤0.05) while this increase was not significant in resistance group. Also, there was a significant difference in the increased plasma levels of both enzymes between the two groups (P≤0.05). The results of this study indicated the more prominent role of continuous endurance training compared with the resistance training in increasing plasma levels of hepatic enzymes. It can be stated that the 8-week resistance training decreased the probability of increase of ALT and AST enzymes (which are considered as an index for cell injury) compared with continuous endurance training.