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J Shahrekord Univ Med Sci. 2021;23(3): 111-115.
doi: 10.34172/jsums.2021.19
  Abstract View: 74
  PDF Download: 60

Original Article

High-intensity interval training ameliorates high-fat diet-induced elevation of aminotransferases in male Wistar rats

Qazaleh Asqari 1 ORCID logo, Farhad Gholami 1* ORCID logo, Jabbar Bashiri 2 ORCID logo, Adel Donyaei 1 ORCID logo

1 Department of Sports Physiology, Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran
2 Department of Sport Sciences, Faculty of Education and Human Sciences, Tabriz Branch, Islamic Azad University, Tabriz, Iran
*Corresponding Author: Farhad Gholami, Department of Sports Physiology, Faculty of Sport Sciences, Shahrood University of Technology, Shahrood, Iran. Tel: +989365827050, Email: gholami-fa@shahroodut.ac.ir

Abstract

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.


Keywords: High-intensity interval training, Aspartate aminotransferase, Alanine aminotransferase, High-fat diet

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Submitted: 08 Oct 2020
Accepted: 06 Feb 2021
ePublished: 29 Sep 2021
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