نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد فیزیولوژی ورزشی ،گروه علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه سیستان و بلوچستان، زاهدان، ایران.

2 استاد یار مدیریت ورزشی ،گروه علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه سیستان و بلوچستان، زاهدان، ایران.

3 استاد یار فیزیولوژی ورزشی ،گروه علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه سیستان و بلوچستان، زاهدان، ایران.

چکیده

زمینه و هدف  تحقیقات نشان داده‌اند که تمرینات مختلف ورزشی می‌توانند تأثیرات متفاوتی بر سطوح سرمی عامل نوروتروفیک مشتق از مغز (BDNF) بگذارند. با این وجود، اطلاعات کافی در مورد اثر تعاملی تمرینات تناوبی شدید ورزشی از طریق تأثیر بر وزن، شاخص توده بدنی و دور کمر به لگن بر BDNF وجود ندارد یا بسیار اندک می‌باشد. از این رو، هدف از پژوهش حاضر، بررسی تأثیر 6 هفته تمرین تناوبی شدید بر سطوح سرمی عامل نوروتروفیک مشتق از مغز و ترکیب بدنی دانشجویان پسر غیرفعال بود.
مواد و روش‌ها در این پژوهش نیمه‌ تجربی، 16 نفر از دانشجویان پسر غیرورزشکار دانشگاه سیستان و بلوچستان، به صورت تصادفی ساده، به دوگروه 8 تایی کنترل و تمرین، تقسیم شدند. گروه تمرین، تمرینات تناوبی شدید به مدت 6 هفته را در یک مسافت 20 متری به صورت رفت و برگشت به مدت 30 ثانیه با شدت 90 درصد ضربان قلب حداکثر و 30 ثانیه استراحت فعال بین هر تکرار انجام دادند. گروه کنترل، طی این مدت هیچ‌گونه فعالیت ورزشی انجام ندادند. مقادیرBDNF به ترتیب 24 و 48 ساعت پیش از اولین و پس از آخرین جلسه پروتکل تمرینی با روش الایزا توسط کیت ویژه سنجش شد. داده‌ها با استفاده از نرم‌افزارspssنسخه19 و تغییرات بین گروهی با کمک آزمون تی مستقل و اختلافات درون‌گروهی با استفاده از آزمون تی همبسته در سطح معناداری 0/05≥p تحلیل شدند.
یافته‌ها در پژوهش حاضر، یافته‌ها نشان دادندپس از 6 هفته درگروه تمرین تناوبی شدید، وزن (0/008=p) و شاخص توده بدنی (0/005=p) کاهش معنی‌داری داشتند که همسو با افزایش معنی‌دار مقادیر سطوح سرمی BDNF (p=0/031) بود، در حالی که هیچ یک از شاخص‌ها در گروه کنترل، تغییر معنی‌دار را نشان ندادند (0/05<p). به‌علاوه، در مقادیر سرمی BDNF افزایش معنی‌داری در گروه تمرین در مقایسه با گروه کنترل رخ داد (0/002=p).
نتیجه‌گیری با توجه به پارامترهای حاصل از مطالعه به نظر می‌رسد، تمرین تناوبی شدید می‌تواند با کاهش وزن وشاخص توده بدنی،سببسازگاری نروتروفینی وافزایش سطوح سرمی BDNF دانشجویان پسر غیرفعال شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The effect of 6 weeks of high-intensity interval training on serum levels of brain-derived neurotrophic factor and body composition of inactive male students

نویسندگان [English]

  • sajad karimi por 1
  • mahmood Fazel Bakhsheshi 2
  • shila Nayebi far 3

1 Msc in Exercise Physiology, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, University of Sistan and Baluchestan, Zahedan, Iran .

2 Assistant Professor in Sport Mnagement, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, University of Sistan and Baluchestan, Zahedan, Iran .

3 Assistant Professor in Exercise Physiology, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, University of Sistan and Baluchestan, Zahedan, Iran

چکیده [English]

Introduction: Research has shown that various exercises may have different effects on serum levels of brain-derived neurotrophic factor (BDNF). However, there is little information on the interactive effect of intense interval exercises through the effect on weight, body mass index, and waist to hip on BDNF. Hence, the purpose of the present study was to investigate the effect of 6 weeks of high-intensity interval training on serum levels of brain-derived neurotrophic factor and body composition of inactive male students.
Materials and Methods: In this quasi-experimental study, 16 non-athlete male students from Sistan and Baluchestan University were divided into two groups of 8 as control and training through simple randomization. The training group, performed 6 weeks of high-intensity interval training, in a 20-meter shuttle run for 30 seconds with a 90 percent maximum heart rate and 30 seconds active rest between each repetition was performed. The control group did not perform activity. BDNF values were measured 24 hours before and 48 hours after the first and last training sessions of exercise using ELISA method by commercial kits. Data were analyzed using independent t-test and t-paired test at p≤0.05level.
Results: In the present study, the findings showed that after 6 weeks, weight (p = 0.008) and body mass index (p = 0.005),  decreased in high-intensity interval training group compared to control one, which was consistent with a significant increase in serum levels of BDNF (p = 0.031). While, none of the variables significantly changed in control group (p >0.05), in addition, there was a significant increase in serum contents of BDNFin HIIT group compared to control (p = 0.002).
Conclusion: Regarding the parameters of study, it can be concluded that high-intensity interval training improve BDNF through reduction in weight and BMI in inactive male students.

کلیدواژه‌ها [English]

  • High-Intensity Interval Trainings
  • Brain Derived Neurotrophic Factor
  • Body Compositions
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