The Effect of Two Types of High Intensity Interval Training (HIIT) on Oxidation of Fat and Carbohydrate in Young Overweight Men

Document Type : Research Paper I Open Access I Released under CC BY 4.0 license


1 Ph.D. Student of Biochemistry and Exercise Metabolism, Faculty of Physical Education and Sport Sciences, University of Guilan, Rasht, Iran

2 Associate Professor, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran

3 PhD Student of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran

4 Ph.D. Student of Cardiovascular and Exercise Pulmonary, University of Tehran, Tehran, Iran )Received:2014/1/8;Accepted:2014/9/13)


The aim of this study was to investigate the effects of two weeks of high-intensity interval training (HIIT) on fat and carbohydrate oxidation in overweight young men. 16 young sedentary overweight men participated voluntarily in this study and were randomly assigned to two experimental groups: HIIT-1 (BMI=26.54±2.6) and HIIT-2 (BMI=26.32±2.29). HIIT-1 included 3 sessions a week with four 1-min. intervals, and 4 min. of rest and HIIT-2 included four 30-sec. intervals with 2 min. of rest. Respiratory gasses were collected one day before and after the training in a fasting state for laboratory analysis. Independent t test was used to analyze intergroup changes while dependent t test was applied for intra-group analysis. The results showed that HIIT decreased 9% of carbohydrate consumption and increased 43% of fat consumption, when Bruce test was conducted in HIIT-1. These changes were significant compared with HIIT-2. The changes of weight and body fat percentage were significant only in the HIIT-1. According to these results, 6 sessions of HIIT relatively improved fat oxidation and glycogen storage.


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Volume 9, Issue 2 - Serial Number 2
September 2017
Pages 157-169
  • Receive Date: 08 January 2014
  • Revise Date: 08 May 2017
  • Accept Date: 12 June 2013
  • First Publish Date: 23 August 2017