fa تأثیر 12 هفته تمرین قدرتی بر قدرت عضلانی، درصد چربی، آیریزین و BDNF زنان میان‌سال غیرفعال عمومى General پژوهشي اصیل Original Atricle <span style="font-size:11pt"><span style="line-height:101%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black">مقدمه:</span></span></span></span></b> <span lang="FA" style="font-size:9.0pt"><span style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black">با توجه به سنتز و ترشح آیریزین و </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:101%"><span new="" roman="" style="font-family:" times=""><span style="color:black">BDNF</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black"> از بافت عضلانی در جریان تمرینات ورزشی و ارتباط احتمالی این فاکتورها با بهبود قدرت و عملکرد عضلانی، هدف از پژوهش حاضر، بررسی تأثیر 12 هفته تمرین قدرتی بر قدرت عضلانی، درصد چربی، آیریزین و </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:101%"><span new="" roman="" style="font-family:" times=""><span style="color:black">BDNF</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black"> در زنان میان‌سال غیرفعال بود</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black">. </span></span></span></span><span lang="FA" style="line-height:101%"><span b="" nazanin="" style="font-family:"><span style="color:black"></span></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:104%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black">روش کار:</span></span></span></span></b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> در مطالعه نیمه‌تجربی، 20 نفر از زنان میان‌سال غیرفعال (میانگیـن سـنی <a name="_Hlk187594917">5/91 </a></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span cambria="" style="font-family:"><span style="color:black">&plusmn;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> 37/70 </span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black">سال<a name="_Hlk187593612">، </a>وزن 5/82 </span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span cambria="" style="font-family:"><span style="color:black">&plusmn;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> 79/80 کیلوگـرم) انتخاب و به</span></span></span></span> <span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black">طور تصادفی در دو گروه تمرین‌قدرتی <a name="_Hlk187593745">(10 نفر) </a>و شاهد (10 نفر) قرار گرفتند. گروه تمرینی 12 هفته تمرین قدرتی را به صورت 3 جلسه در هفته با شدت 65 تا 80 درصد قدرت بیشینه اجرا کردند. سپس نمونه‌های خونی برای اندازه‌گیری آیریزین، </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:104%"><span new="" roman="" style="font-family:" times=""><span style="color:black">BDNF</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> به روش الایزا گرفته شد. جهت تجزیه و تحلیل داده‌ها از روش آماری </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:104%"><span new="" roman="" style="font-family:" times=""><span style="color:black">t</span></span></span></span><span style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> مستقل و آزمون همبستگی </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:104%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Pearson</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black"> استفاده گردید. سطح معنی‌داری (0/05 </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:104%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P &le;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:104%"><span b="" nazanin="" style="font-family:"><span style="color:black">)، در نظر گرفته شد. </span></span></span></span><span dir="LTR" style="font-size:10.0pt"><span style="line-height:104%"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:102%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span calibri="" style="font-family:"><b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">یافته‌ها:</span></span></span></span></b> <span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">تمرین‌ قدرتی، باعث افزایش معنی‌دار غلظت سرمی آیریزین (0/035 = </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">)<a name="_Hlk187595319">،</a> غلظت سرمی </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">BDNF</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black"> (0/058 = </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">) و همچنین کاهش معنی‌دار درصد چربی <a name="_Hlk187593689">(0/058 = </a></span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">) </span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">زنان میان‌سال شد. همچنین بین قدرت پایین&lrm;تنه و سطوح سرمی آیریزین ارتباط مثبت و معنی‌داری وجود دارد (0/040 = </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">). بر اساس نتایج آزمون همبستگی </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Pearson</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black"> بین متغیر </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">BDNF</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black"> و قدرت بالاتنه نیز ارتباط مثبت و معنی‌دار وجود داشت (038/0 = </span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black">P</span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="line-height:102%"><span b="" nazanin="" style="font-family:"><span style="color:black">). </span></span></span></span><span dir="LTR" style="font-size:10.0pt"><span style="line-height:102%"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></span></span></span></span></span></span><br> <b><span dir="RTL" lang="AR-SA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><span style="color:black"><span style="letter-spacing:-.1pt">نتیجه‌گیری:</span></span></span></span></span></b> <span dir="RTL" lang="FA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><span style="color:black"><span style="letter-spacing:-.1pt">بر اساس نتایج حاصل از پژوهش حاضر به نظر می‌رسد، افزایش ترشح سطوح سرمی هورمون آیریزین و </span></span></span></span></span><span style="font-size:9.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="letter-spacing:-.1pt">BDNF</span></span></span></span></span><span dir="RTL" lang="FA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><span style="color:black"><span style="letter-spacing:-.1pt"> با افزایش قدرت عضلانی متعاقب تمرینات قدرتی در افراد میان‌سال مرتبط بود</span></span></span></span></span><span dir="RTL" lang="AR-SA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><span style="color:black"><span style="letter-spacing:-.1pt">.</span></span></span></span></span> <span style="font-size:11pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="line-height:normal"><span calibri="" style="font-family:"><b><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet="">Introduction:</span></span></b><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet=""> Considering the synthesis and secretion of irisin and BDNF from muscle tissue during exercise and the possible relationship of these factors with improving muscle strength and performance, the present study aimed to investigate the effect of 12 weeks of strength training on muscle strength, body fat percentage, irisin, and BDNF in inactive middle-aged women.</span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="line-height:normal"><span calibri="" style="font-family:"><b><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet="">Methods:</span></span></b> <span lang="EN-GB" style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet="">In a semi-experimental study, 20 inactive middle-aged women (mean age 37.70 &plusmn; 5.91 years, weight 79.80 &plusmn; 5.82 kg) were selected and randomly assigned to two strength training groups (n = 10) and control groups (n = 10). The training group performed 12 weeks of strength training, three sessions per week at an intensity of 65 to 80% of maximum strength. Then, blood samples were taken using ELISA to measure irisin and BDNF. Independent t-test and Pearson correlation test were used to analyze the data. The significance level (P &le; 0.05) was considered</span></span><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet="">.</span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="line-height:normal"><span calibri="" style="font-family:"><b><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.1pt">Results: </span></span></span></b><span lang="EN-GB" style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.1pt">Strength training significantly increased serum irisin concentration (P = 0.035) and serum BDNF concentration (P = 0.058) and also considerably decreased body fat percentage (P = 0.058) in middle-aged women. There was also a positive and significant relationship between lower body strength and serum irisin levels (P = 0.040). The Results from the Pearson correlation test indicate a significant positive relationship between BDNF and upper body strength (P = 0.038)</span></span></span><span style="font-size:8.0pt"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.1pt">.</span></span></span></span></span></span></span></span><br> <b><span style="font-size:8.0pt"><span style="line-height:115%"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.2pt">Conclusions:</span></span></span></span></b> <span lang="EN-GB" style="font-size:8.0pt"><span style="line-height:115%"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.2pt">Based on the results of the present study, it seems that increased secretion of serum irisin and BDNF hormones is related to increased muscle strength following strength training in middle-aged individuals</span></span></span></span><span style="font-size:8.0pt"><span style="line-height:115%"><span ms="" style="font-family:" trebuchet=""><span style="letter-spacing:-.2pt">.</span></span></span></span> زنان میان‌سال؛ تمرین قدرتی؛ آیریزین و BDNF Middle-aged women, Strength training, Irisin and BDNF 1 8 http://jams.arakmu.ac.ir/browse.php?a_code=A-10-7653-1&slc_lang=fa&sid=1 Reavan Afshar رضوان افشار afsharrezvan26@gmail.com 4600319475328460089518 0009-0009-7986-5827 No PhD Student of Exercise Physiology, Department of Physical Education and Sports Sciences, Faculty of Literature and Humanities, Lorestan University, Khorramabad, Iran دانشجوی دکتری فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده ادبیات و علوم انسانی دانشگاه لرستان، خرم‌آباد، ایران Masoud Rahmati مسعود رحمتی rahmati.mas@lu.ac.ir 4600319475328460089519 4600319475328460089519 Yes Professor of Exercise Physiology, Department of Physical Education and Sports Sciences, Faculty of Literature and Humanities, Lorestan University, Khorramabad, Iran استاد فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده ادبیات و علوم انسانی، دانشگاه لرستان، خرم‌آباد، ایران Rahim Mirnasouri رحیم میرنصوری mirnasuri.r@lu.ac.ir 4600319475328460089520 4600319475328460089520 No Assistant Professor of Sports Medicine, Department of Physical Education and Sports Sciences, Faculty of Literature and Humanities, Lorestan University, Khorramabad, Iran دانشیار طب ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده ادبیات و علوم انسانی، دانشگاه لرستان، خرم‌آباد، ایران