تاثیر هشت هفته تمرین مقاومتی بر غلظت پلاسمایی امنتین-1 و شاخص مقاومت به انسولین در مردان چاق

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی، دانشگاه مازندران، بابلسر، ایران

2 کارشناس‌ارشد فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه آزاد اسلامی واحد ساری، ساری، ایران

چکیده

امنتین-1 آدیپوکینی با ویژگی بهبود حساسیت انسولینی است. هدف پژوهش حاضر بررسی تاثیر 8 هفته تمرین مقاومتی دایره‌ای بر سطوح پلاسمایی امنتین-1 در مردان چاق بود. بیست و هشت مرد چاق با میانگین سن 0/8 ± 7/35 سال، وزن 3/14 ± 5/95 کیلوگرم و شاخص توده بدن 3/4 ± 8/31 به طور داوطلبانه در این تحقیق شرکت کرده و به دو گروه کنترل (تعداد = 12) و تمرین مقاومتی (تعداد = 16) تقسیم شدند. آزمودنی‌های گروه تمرین 8 هفته تمرین مقاومتی دایره‌ای با شدت 50 تا 85 درصد یک تکرار بیشینه را (3 روز در هفته) انجام دادند. تمرین مقاومتی منجر به کاهش معنی‌دار وزن، شاخص توده‌ی بدن و درصد چربی آزمودنی‌ها شد (05/0>P). کاهش معنی‌دار غلظت پلاسمایی انسولین و مقادیر HOMA-IR نیز در مقایسه با گروه کنترل مشاهده شد (05/0>P). تغییر معنی‌داری در غلظت پلاسمایی امنتین-1 مشاهده نشد. یافته‌های تحقیق حاضر حاکی از عدم تاثیر تمرین مقاومتی بر سطوح درگردش امنتین-1 علی‌رغم تغییر در ترکیب بدنی و شاخص‌های متابولیک می‌باشد. از این رو به نظر می‌رسد ساز و کارهای دیگری نیز غیر از تغییر در ترکیب بدنی و مقاومت انسولینی در تنظیم سطوح پلاسمایی امنتین-1 دخیل باشد

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of 8 Weeks of Resistance Training on Plasma Omentin-1 Concentration and Insulin Resistance Index in Obese Men

نویسندگان [English]

  • Alireza Safarzade 1
  • Morteza Jafari 2
  • Elahe Talebi-Garakani 1
1 Associate Professor, Department of Exercise Physiology, Faculty of Sport Sciences, University of Mazandaran, Babolsar, Iran
2 MSc of Exercise Physiology, Department of Physical Education and Sport Sciences, Islamic Azad University, Sari Branch, Sari, Iran
چکیده [English]

Omentin-1 is a adipokine with insulin-sensitizing properties. The purpose of this study was to investigate the effect of eight weeks of circuit resistance training on plasma omentin-1 levels in obese men. Twenty eight obese men (age; 35.7 ± 8.0 yr, weight; 95.5 ± 14.3 kg, and BMI; 31.8 ± 4.3) voluntarily participated in this study, and were divided into control (n=12) and resistance training (n=16) groups. Subjects in training group performed eight weeks circuit resistance training with 50-85% 1RM (3 days/week). Anthropometrics parameters and fasting plasma glucose, insulin, and omentin-1 levels, as well as insulin resistance index (HOMA-IR) were measured at the baseline and at the end of study. Resistance training induced significant reductions in body weight, BMI and body fat percentage (P < 0.05). Significant reductions in plasma insulin concentration and HOMA-IR scores were found when compared with control group (P < 0.05). we did not find significant changes in plasma omentin-1 levels. The results of this study indicated that resistance training did not affect plasma omentin-1 levels despite significantly improves in anthropometric and metabolic parameters. Therefore it seems that other mechanisms other than changes in body composition and insulin resistance may be involved in regulating plasma omentin-1 levels.

کلیدواژه‌ها [English]

  • insulin resistance
  • Obesity
  • omentin-1
  • resistance training
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