مقایسه اثرات تناوب های استراحتی بین ست های فعالیت مقاومتی بر سطح فاکتور رشد شبه انسولین-۱ و میوستاتین مردان بدنساز آماتور
محورهای موضوعی : مطالعات نوین در متابولیسم ورزش و فعالیت بدنی
مهدی حائری راد
1
,
علی یعقوبی
2
1 - گروه علوم ورزشی، واحد بجنورد، دانشگاه آزاد اسلامی، بجنورد، ایران
2 - گروه علوم ورزشی، واحد بجنورد، دانشگاه آزاد اسلامی، بجنورد، ایران
کلید واژه: فعالیت مقاومتی, اکتور رشد شبه انسولین-۱, میوستاتین ,
چکیده مقاله :
میوستاتین و فاکتور رشد شبه انسولین-۱، پروتئین‌های کلیدی در تنظیم، رشد و هیپرتروفی بافت عضلانی هستند. هدف از مطالعه حاضر بررسی تاثیر تناوب‌های استراحتی بین ست‌های فعالیت مقاومتی بر سطح IGF-1 و میوستاتین مردان بدنساز آماتور بود.
12 مرد جوان بدنساز آماتور با دامنه سنی ۲۰ تا ۳۵ انتخاب شدند. پروتکل تمرین به‌صورت کانتربالانس اجرا شد به طوری که در هفته سوم آزمودنی‌ها حرکات فوق را با وهله یک دقیقه استراحت بین ست (RI1) اجرا کردند. در هفته چهارم، آزمودنی‌ها حرکات فوق را با تناوب استراحتی سه دقیقه‌ای (RI3) بین ست‌ها انجام دادند. خون‌گیری از ورید بازوی آزمودنی‌ها در سه گروه قبل، پس از جلسه تمرین مقاومتی با تناوب استراحتی یک دقیقه‌ای بین ست‌هاو پس از جلسه تمرین مقاومتی با تناوب استراحتی سه دقیقه‌ای بین ست‌ها انجام شد. از روش آماری تحلیل واریانس یک‌طرفه و آزمون تعقیبی توکی جهت تعیین اختلاف بین گروه‌ها در سطح معنی‌داری 05/0>p استفاده شد.
بنابر نتایج آزمون تحلیل واریانس یک‌طرفه بین سطوح IGF-1 در پیش‌ازمون، پس‌آزمون اول و دوم تفاوتی معنی‌دار وجود دارد (036/0=P). در ادامه نتایج آزمون تعقیبی توکی نشان داد که تفاوت معنی‌داری بین پیش‌ازمون، پس‌آزمون اول و دوم وجود ندارد (05/0<P). همچنین بنابر نتایج آزمون تحلیل واریانس یک‌طرفه بین سطوح MSTN در پیش‌ازمون، پس‌آزمون اول و دوم تفاوتی معنی‌دار وجود دارد (013/0=P). در ادامه نتایج آزمون تعقیبی توکی نشان داد که تفاوت بین پیش آزمون و پس آزمون اول معنی‌دار بود (020/0=P)، تفاوت بین پیش آزمون و پس آزمون دوم معنی‌دار و تفاوت بین پس آزمون اول و پس آزمون دوم معنی‌دار نبود (05/0<P).
مطابق یافته های پژوهش حاضر، ممکن است بتوان این دامنه استراحتی را نقطه افتراق پروتئین‌های فعال شونده در فرآیندهای توسعه قدرت و حجیم سازی در سطح سلولی مطرح کرد.
the purpose of present study was comparison of the effects of rest intervals between sets of resistance exercise on insulin-like growth factor-1 and myostatin levels in male amateur bodybuilders.
Twelve young male amateur bodybuilders aged 20 to 35 were selected. The training protocol was implemented as a counterbalance, so that in the third week, the subjects performed the above movements with a one-minute rest interval between sets (RI1). In the fourth week, the subjects performed the above movements with a three-minute rest interval between sets (RI3). Blood was collected from the subjects' arm veins in three groups before, after the resistance training session with a one-minute rest interval between sets, and after the resistance training session with a three-minute rest interval between sets ).
there was a significant difference between the levels of IGF-1 in the pre-test, the first and second post-test (P=0.036). In addition, the results of the Tukey post-test showed that there is no significant difference between the pre-test, the first and second post-test (P>0.05). Also, there was a significant difference between the levels of MSTN in the pre-test, the first and second post-test (P=0.013). In addition, the results showed that the difference between the pre-test and the first post-test was significant (P=0.020), the difference between the pre-test and the second post-test was significant, and the difference between the first and second post-test was not significant (P>0.05).
According to the findings of the present study, this resting domain may be considered the point of differentiation of activated proteins in the processes of strength development and bulking at the cellular level.
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