ورزش و علوم زیست حرکتی

ورزش و علوم زیست حرکتی

اثر 6 هفته تمرینات تداومی و تناوبی با شدت بالا بر فشار اکسایشی میوکارد موش‌های صحرایی نر ویستار

نویسندگان
1 دانشگاه فرهنگیان
2 دانشگاه خوارزمی
چکیده
مقدمه و هدف: نقش استرس اکسایشی در بروز بیماری‌های قلبی مورد توجه پژوهش‌گران قرار گرفته و تاثیر تمرینات تداومی و تناوبی بر فاکتورهای فشار اکسایشی بافت قلب بصورت واضح مشخص نگردیده است. بنابراین هدف از پژوهش حاضر بررسی تاثیر شش هفته تمرینات تداومی و تناوبی بر فشار اکسایشی میوکارد رت‌ها می‌باشد.
مواد و روش­ ها: بدین منظور 40 سر رت نر بالغ بطور تصادفی ساده به 4 گروه (10 تایی) شامل: 1. کنترل سالم 2. تمرین، 3.تمرین تداومی 4. تمرین تناوبی تقسیم شدند. پروتکل تمرین شامل شش هفته تمرین، پنج جلسه در هقته تمرینات تداومی و تناوبی بود. 48 ساعت پس از آخرین جلسه تمرین و بعد از بی‌هوشی کامل،  بطن چپ قلب خارج و میزان آنزیم‌های سوپراکسیددیسموتاز، کاتالاز و مالون‌دی‌آلدهید به روش اسپکتوفتومتری  اندازه‌گیری شدند. جهت تعیین معنادار بودن تفاوت بین متغیرها و تعامل آن‌ها از مانکووا  و آزمون تعقیبی توکی استفاده ‌شد (0.05≥P < span lang="AR-SA">).
یافته­ ها: نتایج نشان داد که تمرینات تداومی و تناوبی باعث کاهش معنادار مالون‌دی‌آلدهید نسبت به گروه کنترل شد (0.05≥P < span lang="AR-SA">). همچنین تمرینات تداومی و تناوبی باعث افزایش معنادار سوپراکسید دیسموتاز و کاتالاز نسبت به گروه کنترل شدند (0.05≥P < span lang="AR-SA">). در هر سه فاکتور مورد نظر بین گروه‌های تمرین تداومی و تناوبی تفاوت معناداری مشاهده نشد (0.05
).
بحث و نتیجه­ گیری: بر اساس نتایج تحقیق می‌توان اظهار داشت که تمرینات تداومی و تناوبی می‌تواند اثرات محافظتی بر قلب رت‌ها داشته باشد و از بروز آسیب‌های قلبی ممانعت به عمل آورد.
کلیدواژه‌ها

عنوان مقاله English

The effect of 6 weeks high-intensity intermittent and continuous training on myocardial oxidative stress in male Wistar rats

نویسندگان English

Roohollah Mohammadi Mirzaei 1
hamid malekshahinia 2
mohammadreza dehkhoda 2
چکیده English

Introduction and purpose: The role of oxidative stress in the occurrence of heart diseases has been noticed by researchers, and the effect of continuous and intermittent exercises on the oxidative stress factors of heart tissue has not been clearly determined. Therefore, the aim of this study was to investigated the effect of 6 weeks of continuous and intermittent exercises on the oxidative stress of the myocardium of rats
Materials and Methods: For this purpose, 40 adult male rats were randomly divided into 4 groups (ten each): 1- healthy control, 2- training, 3- continuous training, 4- intermittent training. The training protocol included six weeks of training, five sessions/week of continuous and periodic training. 48 hours after the last training session and after complete anesthesia, the left ventricle of the heart was removed and the levels of superoxide dismutase, catalase and malondialdehyde enzymes were measured by spectrophotometric method (P<0.05).
Results: The results showed that continuous and intermittent exercises caused a significant decrease in malondialdehyde compared to the control group (P<0.05). Also, continuous and intermittent exercises caused a significant increase in superoxide dismutase and catalase compared to the control group (P<0.05). No significant difference was observed between the continuous and periodic exercise groups in all three factors (P<0.05).
Discussion and Conclusion: Based on the results of the research, it can be stated that continuous and intermittent exercises can have protective effects on the heart of rats and prevent the occurrence of heart damage.

کلیدواژه‌ها English

continuous training
interval training
Malondialdehyde
Superoxide dismutase
Catalase
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دوره 11، شماره 21 - شماره پیاپی 21
بهار و تابستان
شهریور 1398
صفحه 32-42

  • تاریخ دریافت 02 آذر 1401
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