نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه رازی کرمانشاه / دانشکده تربیت بدنی و علوم ورزشی
چکیده
زمینهوهدف: در طول دو دهه گذشته، استفاده از مکمل های اسیدآمینه ای برای پیشرفت در عملکرد ورزشی مورد توجه قرار گرفته است. هدف از پژوهش حاضر بررسی تأثیر مصرف مکمل ال - آرژینین بر پاسخ هورمون رشد، لاکتات و گلوکز سرم به فعالیت هوازی در دانش آموزان پسر بود. روشتحقیق: آزمودنی های این پژوهش تعداد 10 دانش آموز ورزشکار با دامنه سنی 16 تا 18 سال بودند. مطالعه به صورت نیمه تجربی تصادفی، دو سوکور و متقاطع در یک موقعیت پایه و دو موقعیت مصرف مکمل 1/0 گرم/کیلوگرم/وزن بدن و دارونما )نشاسته( انجام شد. آزمودنی ها در سه مرحله فعالیت دوی هوازی )دویدن با شدت درک فشار بورگ 15 معادل 70 تا 80 درصد حداکثر ضربان قلب به مدت 30 دقیقه( شرکت کردند. مرحله اول قبل از دریافت مکمل و دارونما و مرحله دوم و سوم بعد از دریافت دوره های سه روزه مکمل و دارونما انجام شد. خون گیری از ورید بازویی در مرحله اول، قبل و بعد از آزمون هوازی و در مرحله دوم و سوم بعد از دریافت مکمل و دارونما و بلافاصله پس از آزمون دوی هوازی به عمل آمد. جهت تجزیه و تحلیل داده ها از آزمون تحلیل واریانس با اندازه گیری مکرر و آزمون t همبسته در سطح معناداری 0/05>p بهره برداری شد. یافتهها: افزایش معنی داری پس از مصرف مکمل ال- آرژینین همراه با تمرین، بر پاسخ هورمون رشد سرم مشاهده گردید (0/0001= p) در حالی که در میزان گلوکز (0/11=p ) و لاکتات سرم (0/09=p) تغییر معنی داری ایجاد نگردید. نتیجهگیری: استفاده از مکمل ال- آرژینین می تواند برای ورزشکاران شرکت کننده در فعالیت های هوازی مفید باشد؛ اما پیشنهاد می شود دوزهای بالاتر این مکمل در دوره های طولانی تر مصرف نیز مورد ارزیابی قرار گیرد.
کلیدواژه‌ها
عنوان مقاله [English]
The effect of L- arginine supplementation on serum growth hormone, lactate and glucose responses to aerobic activity in boy students
نویسندگان [English]
- Masoud Jamshidi Hossein Abadi
- Ali Jamshidi Hossein Abadi
- Naser Behpoor
چکیده [English]
Background and Aim: During the last decades, the importance of amino acid supplementation has been recommended to improve exercise performance. The aim of this study was to investigate the effect of L-arginine supplementation on growth hormone, lactate and glucose responses to aerobic activity in boy students. Materials and Methods: Participants were included 10 athlete students with age: 18-16 years old. This research was a randomly semi-experimental double-blind study which established in a basic and two supplementation (0.1 gr per kg/body weight) and placebo (Starch) situations. The subjects participated in three phases of aerobic activity (running at intensity of 15th Borg scale equal to 80-70percent of maximum heart rate for 30 minutes. The first phase was done before receiving of supplementation and placebo and the second and third phases were done after receiving three days supplementation and placebo. Blood samples were collected during the first phase before and after aerobic test, but in the second and third phases after receiving three days supplementation and placebo immediately after aerobic running. For extraction of results the ANOVA with repeated measures and paired t-test were applied and the significant level set as p<0.05. Results: The result showed the significant increase in growth hormone after consuming supplementation with exercise (p=0.0001), but no significant change was observed for blood glucose (p=0.11) and blood lactate (p=0.09). Conclusion: Consumption (0.1 gr/kg) of Arginine supplementation indicated significant effect on growth hormone response to aerobic exercise.; but it was not true for both lactate and glucose serum. Therefore, it can be suggested the higher doses and longer periods for consumption of this supplement.
کلیدواژه‌ها [English]
- L-arginine supplementation
- Aerobic exercise
- Growth hormone
- Lactate
- Glucose
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