نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I

نویسندگان

1 دانشجوی دکتری بیوشیمی و متابولیسم ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه گیلان، رشت، ایران

2 دانشیار، دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه تهران، تهران، ایران

3 دانشجوی دکتری فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه تهران تهران، ایران

4 دانشجوی دکتری قلب و عروق و تنفس ورزشی دانشگاه تهران، تهران، ایران

چکیده

 
هدف از پژوهش حاضر، بررسی تأثیر دو هفته تمرین تناوبی شدید (HIIT)  بر اکسیداسیون چربی و کربوهیدرات مردان جوان دارای اضافه وزن بود. به این منظور، 16 مرد جوان غیرفعال دارای اضافه وزن داوطلبانه در این پژوهش شرکت کردند و به­طور تصادفی به دو گروه تجربی HIIT-1، با BMI معادل 6/2±54/26، و گروه HIIT-2 با BMI 29/2 ±32/26 تقسیم شدند. HIIT-1 شامل سه جلسه در هفته، چهار تناوب یک‌دقیقه‌ای با چهار دقیقه استراحت و HIIT-2 شامل چهار تناوب 30 ثانیه‌ای با دو دقیقه استراحت بود. گازهای تنفسی یک روز قبل و بعد از تمرین، به‌صورت ناشتا برای انجام تجزیه‌وتحلیل‌های آزمایشگاهی جمع‌آوری شد. از آزمون‌ آماری t مستقل برای بررسی تغییرات بین‌گروهی و از  tوابسته برای بررسی تغییرات درون‌گروهی استفاده شد. تمرینات HIIT موجب کاهش 9 درصدی استفاده از کربوهیدرات و افزایش 43 درصدی استفاده از چربی به‌هنگام تست بروس در گروه HIIT-1 شد. این تغییرات نسبت به گروهHIIT-2  معنادار بود. تغییرات وزن و درصد چربی بدن تنها در گروه  HIIT-1معنادار بود. با توجه به نتایج پژوهش حاضر، اجرای شش جلسه HIIT به بهبود نسبی اکسیداسیون چربی و ذخیرۀ گلیکوژن منجر می­شود.

کلیدواژه‌ها

عنوان مقاله [English]

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

نویسندگان [English]

  • Mahdi Gholizadeh 1
  • Mohammad Reza Kordi 2
  • Ali Akbarnejad 2
  • Alireza Ghardashi Afousi 3
  • Sajjad Mohammadyari 4

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)

چکیده [English]

 
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.

کلیدواژه‌ها [English]

  • carbohydrate oxidation
  • Fat oxidation
  • high intensity interval training
  • overweight young men
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