تأثیر تمرین و مکمل‌گیری ویتامین D بر تغییرات هورمونی و عملکردی فوتبالیست های نخبه

نویسنده

دانشگاه فرهنگیان

چکیده

مقدمه و هدف: کمبود ویتامین D با افزایش سطوح هورمون پاراتیروئید پلاسما همراه است که منجر به افزایش تأثیرات منفی و مخرب  بر ارگانیسم و کاهش عملکرد عضلانی می گردد. پژوهش حاضر با هدف تأثیرمکمل‌گیری ویتامین D بر تغییرات هورمونی و عملکردی فوتبالیست­ های نخبه زن تیم­ ملی ناشنوا انجام گرفت.
مواد و روش ­ها: بدین­ منظور 22 فوتبالیست زن تیم ملی ناشنوایان (سن 3.24±26.20 سال، قد 3.23±155.15 سانتی­متر، وزن 2.46±56.68 کیلوگرم و شاخص توده بدن 1.07±23.61 کیلو‌گرم/مجذور قد) به صورت داوطلبانه با آرایش تصادفی به دو گروه مکمل (11نفر) و دارونما (11نفر) تقسیم شدند. آزمودنی­ ها 120 دقیقه قبل از فعالیت، ویتامین D و دارونما را به روش دوسوکور مصرف کردند. از آزمودنی­ها قدرت بیشینه عضلات­پا، توان بی­ هوازی و هوازی، سرعت، چابکی و 5 سی­ سی خون ناشتا قبل و بعد از آزمون گرفته شد. برنامه تمرینی شامل یک دوره برنامه تمرینات تداومی، پلیومتریک، مقاومتی و اختصاصی بود. برای تحلیل داده­ ها از آزمون­ های شاپیروویلک، تحلیل کوواریانس یک­راهه استفاده شد (0.05>P < span lang="FA">). 
یافته‌ها: تحلیل­ کوواریانس یک راهه نشان داد، بین میانگین ویتامین D (نانوگرم/میلی‌لیتر)، قدرت­ پا (کیلوگرم) و توان بی‌هوازی (وات) برحسب عضویت گروه (مکمل وکنترل) تفاوت معنی ­داری مشاهده می­ شود (0.05>P < span lang="FA">). بین میانگین باقیمانده نمرات توان­ هوازی، سرعت، پاراتیروئید و کلسیم تفاوت معنی­ داری در گروه مکمل و کنترل مشاهده نشد (0.05). یافته­ های تحقیق حاکی از افزایش معنی‌دار سرمی ویتامین D (19.58 نانوگرم/میلی­ لیتر) در گروه مکمل نسبت به کنترل شد (0.05>P < span lang="FA">). 
بحث و نتیجه­ گیری: مطلوب­ترین نتیجه پژوهش حاضر اینست که سطح مطلوب ویتامین D منجر به بازجذب کلسیم توسط کلیه‌ها و دستگاه گوارش و کنترل سطح هورمون‌های پاراتیروئیدی برای عملکرد بهینه عضله اسکلتی می‌شود. بنابراین، حفظ سطوح (OH)D-25 می تواند بازیابی را جهت تولید نیروی عضلانی در حین اجرای تمرینات شدید تسریع کند. ورزشکاران باید در طول سال مورد ارزیابی قرار گیرند و در صورت بروز مشکل مکمل‌گیری انجام پذیرد.

کلیدواژه‌ها


عنوان مقاله [English]

The effect training and vitamin D supplementation on hormonal and functional changes of elite futsal layer's

نویسنده [English]

  • Roohollah Mohammadi Mirzaei
چکیده [English]

Introduction and purpose: Vitamin D deficiency is associated with an increase in plasma parathyroid hormone levels, which leads to an increase in negative and destructive effects on the organism and a decrease in muscle function. The present study was conducted with the aim of the effect of vitamin D supplementation on the hormonal and functional changes of elite deaf national team female futsal players.
Materials and methods: For this purpose,16 female football players deaf national team (age 26.20±3 years,height 155.15±3 cm, weight 56.68±2 kg and BMI 23.61±1 kg/m2)were selected and were randomly divided into two groups supplementation (n=8) and placebo (n=8). Subjects took vitamin D and placebo 120 minutes before the activity in a double-blind manner. Subjects were tested for maximal leg strength, anaerobic and aerobic capacity, speed, agility and 5cc of fasting blood from the anticubital vein before and after the tests. The training program included of continuous, plyometric, resistance and specific training. Statistical analysis was done by one-way analysis of covariance (P≤0.05).
Results: According to the results of ANCOVA, there was a significant difference between the mean residual scores of vitamin D, leg strength and ergojump in groups (P≤0.05). There was no significant difference between the mean scores of aerobic power, speed, parathyroid, Calcium (P≥0.05). Findings indicate an increase in serum vitamin D (19.58 ng/ml) in supplementation group than control (P≤0.05).
Discussion and Conclusion: The most favorable result of the current research is that the optimal level of vitamin D is vital for the optimal functioning of skeletal muscle. Therefore, maintaining (OH)D-25 levels can accelerate recovery for muscle power generation during intense exercise. Athletes should be evaluated throughout the year and supplemental assistance should be provided in case of problems.

کلیدواژه‌ها [English]

  • ErgoJump
  • Parathyroid
  • anaerobic power
  • futsal
  • Calcium
  • Vitamin D
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