Changes in liver aminotransferases and insulin resistance indexafter 10 weeks of high intensity interval training and green tea consumption in overweight young women

The aim of this study was to investigate the effect of 10 weeks ofhigh intensity intervaltraining and green tea consumption on liver enzymes and insulin resistance index in overweight women.

In this randomized placebo-controlled clinical trial, 30 overweight women (age range, 20-30 years), were chosen purposefully and randomly divided into three equal groups. The training groups performed intensive 90% heart rate training for 10 weeks. The supplement group consumed 1500 mg of green tea every day. The combined exercise and complementary group also performed both interventions.Blood samples were taken from subjects before and after intervention in fasting state. Data were analyzed using SPSS software (version 19), two-way ANOVA and Tukey post hoc test at a significant level of p≤0.05.

After 10 weeks of exercise and consumption of green tea, ALT, AST, glucose, weight and fat percentage decreased significantly in all three groups (P≤0.05), while insulin levels (P = 0.01) and resistance Insulin (P = 0.01) decreased in both groups of green tea- HIIT and placebo-HIIT.The mean changes in ALT, AST, glucose, insulin, insulin resistance, weight and fat percentage were significantly higher in the green tea group than in the other two groups (P≤0.05).

10 weeks of high intensity intervaltraining, taking green tea and combining these two together with reducing liver enzymes and insulin resistance markers can potentially reduce the risk of inflammation of the liver.