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Aims: In this study, we assessed the effects of a 12‐week combined aerobic–resistance training and subsequent detraining on Beck Depression Inventory (BDI) score and mediating role of BDNF and also investigated whether exercise‐induced alterations are maintained following a short period of detraining in women with type 2 diabetes (T2D). Materials and Methods: Thirty‐four women with T2D were randomly assigned to experimental or control group (age: 60.6 ± 6.3, body mass index (BMI): 30.2 ± 1.3 kg/m2, HbA1c: 8.09 ± 0.73%). The exercise training comprised of combined aerobic–resistance programme (50%–70% heart rate reserve for aerobic exercise, and 50%–70% 1 repetition maximum for resistance exercise, respectively) performed three sessions per week over 12 weeks. The intervention period was followed by an 8‐week detraining period. Data were collected at baseline and also following exercise intervention and detraining. Data were analysed by linear mixed model at p < 0.05. Results: After 12 weeks of combined exercise training and 8 weeks of detraining, there was a significant difference in BDNF (0.08; 95% confidence interval [CI] = 0.07–0.10; p = 0.001), fasting blood glucose (FBG) (−45.41; CI = −50.83, ‐39.98; p = 0.001), insulin (−6.47; CI = −7.04, −5.9; p = 0.001), HOMA‐IR (−3.76; CI = −4.07, −3.45; p = 0.001) and BDI score (−17.17; CI = −20.29, −14.05; p = 0.001) between the experimental and control group. Multiple mediation analysis indicated that BDNF seems to have a mediating role in exercise‐induced improvement of depression (p = 0.04). After the detraining period, BDI score remained unchanged and it showed a significant increase compared to before the start of training (p = 0.001). Conclusions: It may be concluded that exercise training improves depression that is likely to be explained by increased BDNF concentration in TD2. In spite of decreased BDNF concentration following an 8‐week detraining, depression score was maintained. [ABSTRACT FROM AUTHOR]

Background and aims: A high-fat diet increases triglyceride (TG) accumulations in hepatocytes and results in non-alcoholic fatty liver diseases (NAFLDs). In this regard, this study investigated the effect of high-intensity interval training (HIIT), along with a high-fat diet on the serum levels of aminotransferases in male Wistar rats. Methods: Forty male Wistar rats were randomly assigned to the standard diet, high-fat diet, exercise + standard diet, and exercise + high-fat diet groups (each containing 10 animals). HIIT program consisted of 6-12 repetitions of 2-minute highs-intensity exercise (85-90% of the maximum speed) interspersed with 1-minute low-intensity exercise (45-50% peak speed) with the frequency of 5 sessions a week over 12 weeks. High-fat diet groups received a diet regimen including 58% fat, 25% protein, and 17% carbohydrate, ad libitum. The blood samples were taken from the left ventricle 48 hours following the last intervention to assess TG, alanine aminotransferase (ALT), and aspartate amino-transferase (AST) concentrations. Data were analyzed using one-way ANOVA and Tukey’s post-hoc tests. Results: The findings showed the mean of ALT, AST, and TG in the high-fat diet group was significantly greater compared to the standard diet group (P = 0.001). Furthermore, the mean of ALT, AST, and TG in the exercise + high-fat diet group was significantly lower in comparison with the high-fat diet group (P = 0.01, P = 0.017, and P = 0.012, respectively). Conclusion: Although HIIT ameliorated high-fat diet-induced elevations in the serum levels of TG, ALT, and AST, they did not reach the baseline levels. Thus, it may indicate that a diet as the underlying cause of NAFLDs is more important than any other interventions such as exercise. [ABSTRACT FROM AUTHOR]