نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناس ارشد تربیت بدنی و علوم ورزشی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران.
2 دانشیار گروه تربیت بدنی و علوم ورزشی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران.
چکیده
زمینه و هدف: رزیستین یکی از آدیپوکاین‌‌های مترشحه از بافت چربی است که نقش مهمی در چاقی و مقاومت به انسولین ایفا می‌‌کند. هدف از اجرای مطالعه حاضر، بررسی تاثیر 8 هفته تمرین مقاومتی با دو شدت مختلف بر سطوح رزیستین و مقاومت به انسولین در زنان سالمند چاق بود. روش تحقیق: تعداد 30 زن سالمند چاق (میانگین سنی 64/3±5/64 سال و شاخص توده بدن 02/1±8/31 کیلوگرم/مترمربع) به صورت تصادفی در سه گروه 10 تایی شامل گروه کنترل، تمرین مقاومتی با شدت کم و تمرین مقاومتی شدید تقسیم‌‌بندی شدند. تمرین مقاومتی شدید (80 درصد یک تکرار بیشینه) و تمرین مقاومتی با شدت کم (30 درصد یک تکرار بیشینه) به مدت 8 هفته و 3 جلسه در هفته اجرا شد و گروه کنترل در هیچ تمرین ورزشی شرکت نکرد. خونگیری در دو مرحله پیش آزمون و پس آزمون صورت گرفت و در ادامه سطوح رزیستین و میزان مقاومت به انسولین اندازه‌‌گیری شد. سپس داده‌‌ها با آزمون تحلیل کوواریانس و آزمون توکی در سطح معنی داری 05/0>p تجزیه و تحلیل گردید. یافته‌‌ها: تغییرات رزیستین بین گروه‌‌های مختلف معنی دار نبود (29/0=p)؛ با وجود این، کاهش معنی دار مقاومت به انسولین و درصد چربی بدن در گروه تمرین مقاومتی با شدت کم و شدید در مقایسه با گروه کنترل مشاهده شد (001/0=p). نتیجه‌‌گیری: تمرین مقاومتی با شدت های کم و زیاد و مستقل از تغییرات در سطوح رزیستین، با تغییرات مطلوبی در وضعیت متابولیک زنان سالمند چاق همراه است.
کلیدواژه‌ها
عنوان مقاله [English]
Effects of 8 weeks resistance training with two different intensities on plasma levels of resistin and insulin resistance in obese elderly women
نویسندگان [English]
- Tarlan Vafaei 1
- Mandana Gholami 2
1 MSc of Physical Education and Sport Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2 Associate Professor, Department of Physical Education and Sport Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.
چکیده [English]
Background and Aim: Resistin is an adipose tissue derived adipokines that play important role in obesity and insulin resistance. The aim of present study was to investigate the effects of 8 weeks resistance training with two different intensities on serum levels of resistin and insulin resistance in obese elderly women. Materials and Methods: Thirty obese elderly women (mean age of 64.5±3.64 years and body mass index of 31.8±1.02 kg/m2) randomly divided into 3 groups including control, low intensity resistance training (LIRT), and high intensity resistance training (HIRT) groups and each group consisted of 10 subjects. The HIRT (80% of one repetition maximum) and LIRT (30% of one repetition maximum) performed for 8 weeks, 3 sessions per week while control group did not participate in any training program. Blood sampling collected in both pre and post-test stages and then resistin levels and insulin resistance were measured. The data analyzed by analysis of covariance and Tukey post hoc tests at the significant level of p < 0.05. Results: Rresistin levels between different groups were not significant (p=0.29); however, decreased insulin resistnace and body fat percent were observed in the LIRT and HIRT groups compared to control group (p=0.001). Conclusion: Resistance training with low and high intensity independent of changes at the resistin levels is accompanied by the favorable changes in the metabolic condition in obese elderly women.
کلیدواژه‌ها [English]
- Resistance training
- Adipokines
- Resistin
- Aging
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