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

نویسندگان

1 گروه تربیت بدنی و علوم ورزشی، واحد علی‌آباد کتول، دانشگاه آزاد اسلامی، علی‌آباد کتول، ایران.

2 نویسندة مسئول، گروه تربیت بدنی و علوم ورزشی، واحد علی‌آباد کتول، دانشگاه آزاد اسلامی، علی‌آباد کتول، ایران.

3 گروه تربیت بدنی و علوم ورزشی، واحد یادگار امام خمینی (ره) شهرری، دانشگاه آزاد اسلامی، تهران، ایران.

10.22059/jsb.2024.368627.1618

چکیده

مقدمه: میتوفاژی به‌عنوان یک مسیر چندعملکردی می‌تواند به نقص یا کارایی بیشتر میتوکندری در عضلات اسکلتی منجر شود. فعالیت‌های ورزشی با توجه به شرایطی مانند شدت، مدت و نوع یک عامل مهم برای تنظیم میتوفاژی هستند. بنابراین، هدف از تحقیق حاضر، بررسی تأثیر تمرین تناوبی با شدت متوسط (MIIT) بر محتوای درون‌سلولی پروتئین‌های مرتبط با مسیر میتوفاژی (FUNDC1 و NIX) در عضلة نعلی رت‌های نر نژاد ویستار است.
روش پژوهش: در این پژوهش تجربی، 16 سر رت سه‌ماهه نژاد ویستار با میانگین وزنی 30±280، به‌صورت تصادفی به دو گروه: 1. گروه کنترل، 2. MIIT (هر گروه هشت سر) تقسیم شدند. رت‌های گروه MIIT شامل دویدن رت‌ها روی تردمیل به مدت هشت هفته، هر هفته پنج جلسه و هر جلسه شامل 10 تناوب MIIT، سه‌دقیقه‌ای بود که از طریق تناوب‌های استراحتی دودقیقه‌ای از هم جدا شد. میانگین سرعت در هفتة اول 19 m/min بود که در هفتة آخر میانگین سرعت به 25 m/min رسید. محتوای متغیرها از طریق روش آزمایشگاهی وسترن‌بلات در بافت عضلة نعلی اندازه‌گیری شد. داده‌ها از طریق آزمون t-مستقل در نرم‌افزار گراف‌پد پریسم نسخة 5/9 تجزیه‌وتحلیل شد. سطح معنا‌داری 05/0≥P در نظر گرفته شد.
یافته‌ها: محتوای پروتئین‌های‌ FUNDC1 و NIX کاهش معنا‌داری را در گروه MIIT نسبت به گروه کنترل نشان داد (0001/0P<).
نتیجه‌گیری: با توجه به کاهش این عوامل تمرین MIIT می‌تواند فرایند میتوفاژی را در عضلات اسکلتی تنظیم و به حفظ سلامت میتوکندری از طریق مسیرهای مرتبط کمک کند. نیاز به تحقیقات و بررسی‌های بیشتر است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Effect of Moderate-Intensity Interval Training (MIIT) on the Intracellular Content of Proteins Related to the Mitophagy Pathway in the Soleus Muscle of Male Wistar Rats

نویسندگان [English]

  • Mohammad Sharif Bigdeli 1
  • Neda Aghaei Bahmanbeglou 2
  • Reza Rezaee Shirazi 1
  • Mozhgan Ahmadi 3

1 1. Department of Physical Education and Sport Sciences, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran.

2 Corresponding Author, Department of Physical Education and Sport Sciences, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran.

3 Department of Physical Education and Sport Science, Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch, Islamic Azad University, Tehran, Iran.

چکیده [English]

Introduction: Mitophagy is a multifunctional pathway that can lead to mitochondrial defects and greater efficiency in skeletal muscles. Exercise is an important factor in the regulation of mitophagy according to conditions, such as intensity, duration, and type. Therefore, the current study aimed to investigate the effect of moderate-intensity interval training (MIIT) on the intracellular content of proteins related to the mitophagy (FUNDC1 and NIX) pathway in the soleus muscle of male Wistar rats.

Methods: In this experimental study, 16 three-month-old Wistar rats with an average weight of 280±30 were randomly divided into two groups:1. Control group, 2. MIIT (8 rats per group). Rats in the MIIT group consisted of running on a treadmill for 8 weeks, 5 sessions per week, and each session consisted of 10 MIIT bouts of 3 minutes, separated by 2-minute rest periods. The average speed in the first week was 19 m/min, and in the last week, it reached 25 m/min. The content of the variables was measured using the western blotting laboratory method in the soleus muscle tissue. Data were analyzed using an independent t-test with GraphPad Prism software version 9.5. A significance level of p≥0.05 was considered.

Results: The content of FUNDC1 and NIX proteins were significantly lower in the MIIT group than in the control group (P<0.0001).

Conclusion: Considering the reduction in these factors, MIIT training can regulate the mitophagy process in skeletal muscles and help maintain mitochondrial health through related pathways. Therefore, further research is required.

کلیدواژه‌ها [English]

  • Moderate Intensity Interval Training FUNDC1 Protein
  • NIX Protein
  • Mitophagy

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