نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه الزهرا (س)، تهران، ایران

2 استادیار، گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه الزهرا (س)، تهران، ایران

3 استاد، گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه الزهرا (س)، تهران، ایران

چکیده

زمینه و هدف  اخیراً مشخص شده است که تمرین مقاومتی کل بدن (TRX)، یک روش تمرینی جدید برای بهبود قدرت و توده عضلانی می­باشد ولی تأثیر تمرین TRX بر هورمون­های درگیر در تنظیم توده عضلانی ناشناخته باقی مانده است. از این رو، هدف پژوهش حاضر تعیین تأثیر یک دوره تمرین TRX بر غلظت میوستاتین و فولیستاتین سرم در زنان غیرفعال بود.
مواد و روش­هادرمطالعه­ای تجربی با طرح پیش‌آزمون- پس‌آزمون، 27 زن غیرفعال (20 تا 40 سال) به طور تصادفی به دو گروه کنترل (12 نفر) و TRX (15 نفر) تقسیم شدند. گروه TRX به مدت 8 هفته و 3 جلسه در هفته تمرینات منتخب TRX را اجرا کردند که شامل 6 حرکت اصلی به مدت 60 دقیقه بود. نمونه‌های خونی در حالت پایه و 48 ساعت پس از آخرین جلسه تمرینی جمع‌آوری و غلظت میوستاتین و فولیستاتین سرم اندازه­گیری شد. برای تجزیه‌وتحلیل داده‌ها از آزمون‌های t همبسته و t مستقل استفاده شد.
یافته‌هانتایج نشان داد که تمرین TRX منجر به کاهش معنی­دار میوستاتین سرم نسبت به گروه کنترل (TRX: 8/64± 42/53پیکوگرم بر میلی‌لیتر در برابر کنترل: 12/90± 52/77پیکوگرم بر میلی­لیتر) می­شود (0/021=p ). همچنین، تمرین TRX منجر به افزایش معنی­دار فولیستاتین سرم نسبت به گروه کنترل (TRX: 209/78± 1865/93پیکوگرم بر میلی­لیتر در برابر کنترل: 164/92± 1651/41پیکوگرم بر میلی­لیتر) ­شد (0/008=p ).
 نتیجه‌گیری مطابق با یافته­های پژوهش حاضر به نظر می­رسد که یک دوره تمرین TRX ممکن است منجر به کاهش میوستاتین و افزایش فولیستاتین سرم در زنان غیرفعال شود

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effects of one period of total-body resistance exercise (TRX) training on serum concentration of myostatin and follistatin in inactive women

نویسندگان [English]

  • Rahimeh Moosavi 1
  • Fahimeh Kazemi 2
  • Parvaneh Nazarali 3

1 M.Sc in Exercise Physiology, Faculty of Sport Sciences, Alzahra University, Tehran, Iran

2 Assistant Professor, Department of Exercise Physiology, Faculty of Sport Sciences, Alzahra University, Tehran, Iran

3 Professor, Department of Exercise Physiology, Faculty of Sport Sciences, Alzahra University, Tehran, Iran.

چکیده [English]

Introduction: It is known that the total-body resistance exercise (TRX) is a new training method to improve muscle strength and muscle mass, but, the impact of TRX training on the hormones involved in regulating muscle mass remains unknown. Therefore, the purpose of this study was to determine the effects of one period of TRX training on serum concentration of myostatin and follistatin in inactive women.
Materials and methods: In an experimental study with pre- and post-test design, 27 inactive women aged 20 to 40 years were randomly divided into two groups of control (n=12) and TRX (n=15). The TRX group performed for eight weeks and three sessions a week on selected TRX trainings, which included 6 main movements for 60 minutes. Blood samples were collected at baseline and 48 hours after the last exercise session and serum concentration of myostatin and follistatin was measure. Independent sample t-test and paired sample t-test was used for analyzing data.
Results: The results showed that TRX training resulted in a significant reduction in serum myostatin (TRX: 42.53 ± 8.64 pg/ml versus control: 52.77 ± 12.90 pg/ml) when compared to the control group (P= 0.021). Also, TRX training resulted in a significant increase in serum follistatin (TRX: 1865.93 ± 209.78 pg/ml versus control: 1651.41 ± 164.92 pg/ml) when compared to the control group (P= 0.008).
Conclusion: According to the present findings, it seems that one period of TRX training may be result in decrease of myostatin and increase of follistatin hormones in inactive women

کلیدواژه‌ها [English]

  • TRX
  • myostatin
  • follistatin
  • inactive women
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