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

نویسندگان

1 .دانشجوی دکتری فیزیولوژی ورزش، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

2 .استادیار، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

3 استاد، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

4 دانشیار، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

چکیده

سالمندان، علیرغم نیاز به تمرینات مقاومتی، معمولاٌ از انجام این تمرینات بخصوص در شدت بالا امتناع می‌کنند، یکی از روش‌های جایگزین، تمرین مقاومتی همراه با محدودیت جریان خون می‌باشد. لذا هدف از مطالعه، بررسی تاثیر تمرین مقاومتی با و بدون محدودیت جریان خون بر قدرت، استقامت عضلانی، غلظت سرمیCAF و P3NP در زنان سالمند بود. بدین منظور 40 زن سالمند با میانگین سنی 3±62 سال برای مطالعه انتخاب شدند. آزمودنی‌ها به‌طور تصادفی به چهار گروه مساوی 10 نفره، تمرین مقاومتی با محدودیت جریان خون (4 ست 30،15،15،15 تکراری با شدت 30-20 درصد 1RM)، تمرین مقاومتی بدون محدودیت جریان خون (4 ست 30،15،15،15 تکراری با شدت 30-20 درصد 1RM)، تمرین سنتی (4 ست 12-8 تکراری با شدت 80 درصد 1RM) و گروه کنترل تقسیم شدند. آزمون‌ها و نمونه‌گیری خونی قبل و پس از دوره تمرینی 12 هفته‌ای گرفته شد. از روش تجزیه و تحلیل واریانس با اندازه-گیری مکرر برای بررسی اثرات تمرین استفاده گردید. قدرت و استقامت عضلانی پایین‌تنه و بالاتنه به طور معنی‌داری در هر سه گروه تمرین، در مقایسه با گروه کنترل افزایش داشت (در همه موارد 05/0p<) و بین سه گروه تمرینی اختلاف معنی‌داری مشاهده نشد (05/0p>). همچنین هیچ‌کدام از برنامه‌های تمرینی تاثیر معنی‌داری بر سطوح سرمی CAF (94/0=p) و P3NP (49/0p=) نداشتند. در نتیجه‌ بین سه روش تمرینی در بهبود اثرات ناشی از تمرین مقاومتی اختلاف معنی‌داری مشاهده نشد، لذا احتمالاً بتوان گفت تمرین مقاومتی با شدت پایین، با و بدون محدودیت جریان خون مساوی با تمرین سنتی باعث تغییرات مطلوب در فاکتورهای جسمانی سالمندان زن می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of Resistance Training with and without Blood Flow Restriction on Serum Concentration of CAF, P3NP and Muscular Function in Elderly Women

نویسندگان [English]

  • Akram Sharifi Moghadam 1
  • Roya Askari 2
  • Mohammad Reza Hamedinia 3
  • Amir Hossein Haghighi 4

1 Ph.D. Student of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran

2 Assistant Professor, Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran

3 Professor, Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran

4 Associate Professor, Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran

چکیده [English]

The elderly, despite their need to resistance training, usually abstain from these types of training especially at high intensities. One of the alternative methods is resistance training with blood flow restriction. Therefore, the present study aimed at investigating the effect of resistance training with and without blood flow restriction on muscle strength, muscle endurance and serum concentrations of CAF and P3NP in elderly women. 40 elderly women (mean age of 62±3 years) were selected for this study. Then, they were randomly divided into four equal groups (n=10 for each group): resistance training with blood flow restriction (4 sets of 30,15,15,15 repetitions, 20–30% 1RM), resistance training without blood flow restriction (4 sets of 30,15,15,15 repetitions, 20–30% 1RM), traditional training (4 sets of 8-12 repetitions, 80% 1RM), and control. Blood samples and tests were taken before and after 12 weeks of training. ANOVA with repeated measures was used to assess the effects of training. Lower and upper extremity muscle strength and endurance significantly increased in three training groups compared with the control group (P<0.05). There was no significant difference among three training groups (P>0.05). Also, none of the training protocols had a significant effect on plasma levels of CAF (P=0.94) and P3NP (P=0.94). Therefore, no significant difference was observed among the three training groups in improving the effects of resistance training so it can be asserted that low intensity resistance training with and without blood flow restriction, similar to traditional training, resulted in desirable changes in physical factors of the elderly women.

کلیدواژه‌ها [English]

  • Aging
  • Blood flow restriction
  • C-terminal agrin fragment
  • procollagen type III-N-terminal peptide
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