تاثیر مصرف مکمل ال تیانین بر تعادل، عملکرد شناختی، توان بی‌هوازی و شاخص خستگی ووشوکاران مرد تمرین کرده

نوع مقاله : مقاله پژوهشی Released under (CC BY-NC 4.0) license I Open Access I

نویسندگان

1 گروه علوم ورزشی، دانشکده علوم انسانی، دانشگاه زنجان، زنجان، ایران

2 دانشیار فیزیولوژی ورزش، گروه علوم ورزشی، دانشکده علوم انسانی، دانشگاه زنجان، زنجان، ایران.

چکیده

هدف: مکمل‌ها نقش مهمی در بهبود عملکرد‌های مختلف ورزشکاران دارند. یکی از این مکمل‌ها ال تیانین است که تأثیرات فیزیولوژیکی فراوانی دارد. هدف از پژوهش حاضر بررسی تأثیر مصرف مکمل ال تیانین بر تعادل، عملکرد شناختی، توان بی‌هوازی و شاخص خستگی ووشوکاران مرد تمرین کرده بود. روش‌شناسی: این پژوهش به‌صورت دوسوکور، متقاطع و به روش نیمه تجربی انجام شد. آزمودنی‌ها شامل 1۱ نفر از ووشوکاران شهر زنجان بودند که به دلیل شیوع بیماری کرونا و عدم تمایل آزمودنی‌های انسانی به شرکت در کار پژوهشی، با فاصله زمانی مشخص در هر دو گروه کنترل(دارونما) و تجربی(مکمل) شرکت کردند. آزمون‌های مورد نظر، دو بار به فاصله 3 روز از هم اجرا شد. در پس‌آزمون، آزمودنی‌های گروه دارونما کپسول 200 میلی‌گرمی آرد و گروه مکمل کپسول 200 میلی‌گرمی ال تیانین دریافت کردند و بعد از گذشت 30 دقیقه (زمان لازم برای تأثیرگذاری ال تیانین) به ترتیب آزمون‌های تعادل، عکس‌العمل و آزمون رست برای اندازه‌گیری توان بی‌هوازی(حداقل، حداکثر، میانگین) و سنجش شاخص خستگی اجرا شد. برای تحلیل آماری از آزمون‌های شاپیررو ویلک، کوواریانس و تی زوجی در سطح معنی‌داری 05/0=p استفاده گردید. یافته‌ها: نتایج نشان داد 30 دقیقه پس از مصرف مکمل ال تیانین در آزمودنی‌ها مقادیر تعادل (۰۰۱/۰=P)، عملکرد شناختی (۰۱۰/۰=P) و حداقل توان (۰۰۹/۰=P) بهبود یافته و در خستگی آزمودنی‌ها (۱۹۰/۰=P) و اوج توان (۰۷۸/۰=P) تغییر معنی‌داری حاصل نشده است، همچنین میانگین توان (۰۱۷/۰=P) به‌طور معنی‌داری کاهش یافته بود. نتیجه‌گیری: به نظر می‌رسد که مکمل ال تیانین باعث بهبود قابل‌توجهی در تعادل، عملکرد شناختی و حداقل توان ووشوکاران مرد تمرین کرده شده است ولی بر روی خستگی و اوج توان آنها تأثیر معنی‌داری نداشته است، همچنین عدم بهبود توان میانگین در تست رست احتمالاً نشانگر آن است که این مکمل در کاهش خستگی تجمعی ناشی از تکرارهای سریع بی‌تأثیر بوده است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Effect of L-Theanine Supplementation on Balance, Cognitive function, Anaerobic Power and Fatigue index in Trained Male Wushu Athletes

نویسندگان [English]

  • Ahmad Jebelli 1
  • Aghaali Ghasemnian 2
  • Hamidreza Norouzi 1
1 Department of Sports Sciences, Faculty of Humanities, University of Zanjan, Zanjan, Iran
2 Associate Professor of Exercise Physiology, Department of Sport Sciences, Faculty of Humanity, University of Znjan, Zanjan, Iran.
چکیده [English]

Aim:      Supplements play an important role in improving the various performances of athletes. One of these supplements is L-theanine, which has many physiological effects. The aim of this study was to investigate the effect of L-theanine supplementation on balance, cognitive performance, anaerobic capacity and fatigue index of trained male wushu athletes. Methods: This research was conducted in a double-blind, cross-sectional and semi-experimental manner. The subjects included 11 people from Zanjan city, who participated in both the control (placebo) and experimental (supplement) groups with a certain time interval due to the spread of the corona disease and the reluctance of human subjects to participate in the research work.  The intended tests were performed twice, 3 days apart. Subjects in the placebo group received a 200 mg flour capsule and in the supplement group a 200 mg L-theanine capsule, and after 30 minutes (the time required for L-theanine to take effect), they performed balance, reaction time and RAST tests to measure anaerobic power (minimum, maximum, average) and fatigue index. For statistical analysis, Shapiro Wilk, covariance and paired t tests were used at the significance level of p=0.05. Results The results showed that 30 minutes after taking L-theanine supplement in humansubjects, the values ​​of balance (P=0.001), cognitive performance (P=0.010), minimum power (P=0.009)  improved and and there was no significant change in the subjects' fatigue (P=0.190), also the average power (P=0.017) was significantly reduced. Conclusions:  It seems that L-theanine supplement has significantly improved the balance, cognitive performance and minimum anaerobic power of trained male wushu athletes, but it did not have a significant effect on their fatigue and peak power, but the lack of improvement in the average power in the rest test probably indicates that this supplement in Reduction of cumulative fatigue from rapid repetitions is ineffective.
 

کلیدواژه‌ها [English]

  • L-theanine
  • Balance
  • Cognitive Function
  • Anaerobic Power
  • Fatigue Index

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مطالعات کاربردی تندرستی در فیزیولوژی ورزش
دوره 11، شماره 2
مهر 1403
صفحه 12-22

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سابقه مقاله

  • تاریخ دریافت: 11 تیر 1402
  • تاریخ بازنگری: 13 اسفند 1402
  • تاریخ پذیرش: 14 اسفند 1402

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