نوع مقاله : مقاله پژوهشی Released under (CC BY-NC) license I Open Access I
نویسندگان
1 دانشجوی دکتری فیزیولوژی ورزشی دانشگاه تبریز، تبریز، ایران
2 دانشیار فیزیولوژی ورزشی دانشگاه تبریز، تبریز، ایران
3 استادیار فیزیولوژی ورزشی دانشگاه تبریز، تبریز، ایران
چکیده
مقدمه: هدف مطالعه حاضر، تعیین تاثیر هشت هفته تمرین تناوبی شدید، تمرین مقاومتی و ترکیبی بر بیان microRNAهای مرتبط با چاقی در پسران نوجوان چاق بود. مواد و روشها: در یک مطالعه نیمهتجربی، 36 پسر سالم کمتحرک (سن؛ 15-13 سال؛ BMI: 31-28 kg/m2؛ درصد چربی: 36-32 درصد) انتخاب و سپس بر اساس توان هوازی و درصد چربی در چهار گروه همگن تمرین تناوبی شدید، مقاومتی و ترکیبی و کنترل (بدون فعالیت) قرار گرفتند. هر پروتکل تمرینی به مدت چهار جلسه در هفته برای هشت هفته انجام شد. هر جلسه HIIT شامل 8-6 تکرار دویدن 60-30 ثانیهای با 85-80 درصد (سه دقیقه استراحت بین هر تکرار) بود. تمرین مقاومتی شامل حرکات عضلات اصلی بالاتنه، تنه و پایینتنه با شدت 70 تا 90 درصد از 1RM بود. تمرین ترکیبی شامل ترکیب دو جلسه در هفته تمرین مقاومتی و تمرین HIIT در مجموع چهار جلسه تمرین در هفته بود. تغییرات هر یک از شاخصهای مورد مطالعه طی مراحل مختلف اندازهگیری با آزمونهای تحلیل واریانس یکراهه (ANOVA)، کواریانس و تعقیبی بونفرونی با نرمافزار SPSS22 در سطح معنیداری کمتر از 05/0 بررسی شد. نتایج: پس از تائید همگنی گروهها در متغیر پژوهش (05/0<P)، بر اساس نتایج بعد از اتمام هر سه پروتکل تمرینی میزان بیان miRNA-133a، miRNA-1 و miRNA-143 نسبت به مرحله پیش آزمون به طور معنیداری کاهش یافت (05/0>P). همچنین، تنها در گروه ترکیبی تفاوت معنیداری بین تغییرات بیان miRNA-133a و miRNA-1 با گروه تمرین مقاومتی مشاهده شد (05/0>P)، اما میزان بیان miRNA-133a، miRNA-1 و miRNA-143 تفاوتی بین گروه ترکیبی و گروه تمرین HIIT نداشت (05/0<P). نتیجهگیری: به نظر میرسد استفاده از ترکیب تمرین HIIT و مقاومتی بتواند زمینه کنترل بهتر وزن بدن و چاقی را فراهم کند.
کلیدواژهها
موضوعات
عنوان مقاله [English]
The Effect of Resistance, HIIT and Combined Training on microRNAs Associated with Obesity in Obese and Overweight Adolescent Boys
نویسندگان [English]
- javid nuri 1
- saeid nikokheslat 2
- mostafa khani 3
- javad vakili 2
1 PhD candidate of exercise physiology, University of Tabriz, Tabriz, Iran
2 Associate professor of exercise physiology, University of Tabriz, Tabriz, Iran
3 Assistant professor of exercise physiology, University of Tabriz, Tabriz, Iran
چکیده [English]
Introduction: The aim of the present study is to determine the effect of eight weeks of high intensity interval training, resistance and combined training on hormonal factors and microRNAs related to obesity in obese adolescent boys. Methods: In a semi-experimental study, 36 healthy, sedentary boys (age range: 13-15 years; BMI: 28-31 Kg/m2; Fat Percent: 32-36%) were divided into four homogeneous groups of intense, resistance and combined intermittent exercise and control (no activity) based on aerobic capacity and fat percentage. Each HIIT session consisted of 6-8 repetitions of 30-60 second sprints at 80-85% (three minutes rest between repetitions). Resistance training included movements of the main muscles of the upper body, trunk and lower body. Combined training consisted of a combination of resistance training and HIIT. The changes of the related indicators during different stages of measurement were analyzed with a 3×2 analysis of variance, bonferroni post hoc as appropriate and independent t-tests using SPSS22 software at a significance level of P < 0.05. Results: The results of the present study showed that after completing all three training protocols, the expression levels of miRNA-133a, miRNA-1 and miRNA-143 decreased significantly compared to the pre-test stage. Also, only in the combined group, a significant difference was observed between the expression changes of miRNA-133a and miRNA-1 with the resistance training group, but the expression levels of miRNA-133a, miRNA-1 and miRNA-143 did not differ between the combined group and the HIIT group. Conclusion: It seems that combination of HIIT and resistance training could facilitate body weight and obesity control.
کلیدواژهها [English]
- Obesity
- High-Intensity Interval Training
- Resistance Training
- Combined Training
- Adolescent Boys
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