تاثیر مکمل‌دهی کوتاه مدت کافئین بر سیگنال‌های الکتروانسفالوگرافی ورزشکاران طی یک جلسه فعالیت ورزشی وامانده‌ساز

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

نویسندگان

1 کارشناس ارشد فیزیولوژی ورزشی، گروه علوم ورزشی، دانشکدة علوم تربیتی و روانشناسی، دانشگاه شهید مدنی آذربایجان،تبریز-ایران

2 استادیار فیزیولوژی ورزشی، گروه علوم ورزشی، دانشکدة علوم تربیتی و روانشناسی، دانشگاه شهید مدنی آذربایجان،تبریز-ایران

3 دانشیار رفتارحرکتی، گروه علوم ورزشی، دانشکدة علوم تربیتی و روانشناسی، دانشگاه شهید مدنی آذربایجان،تبریز-ایران

چکیده

هدف: مصرف کافئین عامل تاثیرگذار در  فعالیت­های مغزی و بهبود عملکرد ورزشی می‌باشد. پژوهش حاضر با هدف بررسی آثار مکمل‌دهی کوتاه مدت کافئین بر سیگنال‌های الکتروآنسفالوگرافی ورزشکاران طی یک جلسه فعالیت ورزشی وامانده‌ساز انجام‌گرفت. روش شناسی: این مطالعه از نوع تجربی بوده و جامعه آماری آن را دانشجویان دختر ورزشکار با دامنه سنی 18-24 سال با حداقل دو سال سابقه فعالیت ورزشی تشکیل می­دادند. از این جامعه  20 نفر بصورت داوطلبانه که دارای شرایط لازم برای ورود به این مطالعه بودند به عنوان نمونه انتخاب شدند و بصورت تصادفی در دو گروه 10 نفری گروه تجربی (ورزشکار مصرف کننده مکمل کافئین) و کنترل (ورزشکارمصرف کننده دارونما) قرار گرفتند. و کپسول‌های حاوی کافئین (با دوز 6 میلی گرم بر کیلوگرم وزن بدن) و نشاسته توسط هر یک از آزمودنی‌ها بدون اطلاع از محتوای کپسول و یک ساعت قبل از شروع پروتکل وامانده ساز مصرف گردید. برای هر دو گروه پروتکل ورزشی وامانده‌ساز بروس تا مرز خستگی اجرا شد. همچنین از تمام آزمودنی‌ها اندازه‌گیری امواج مغزی توسط دستگاه الکتروآنسفالوگرافی در سه مرحله ( نیم ساعت قبل از مصرف کافئین و یک ساعت بعد از مصرف کافئین و  بعد از اتمام آزمون وامانده ساز) انجام گرفت. یافته‌ها: نتایج این مطالعه نشان داد که یک جلسه فعالیت ورزشی وامانده‌ساز همراه با مکمل­دهی کوتاه مدت کافئین در ورزشکاران، باعث ایجاد تغییرات معنی‌دار در امواج دلتا در ناحیه پیشانی نیمکره راست و امواج بتا در ناحیه پیشانی نیمکره چپ می گردد (05/0 >P). نتیجه‌گیری: مکمل­دهی کوتاه مدت کافئین قبل از شرکت در یک جلسه فعالیت ورزشی وامانده‌ساز می­تواند موجب بهبود سیگنال­های الکتروآنسفالوگرافی در ورزشکاران شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of Short-term Caffeine Supplementation on Electroencephalography Signals During Exhaustion Exercise Session in Athletes

نویسندگان [English]

  • Samira Olfat 1
  • Roghyeh Fakhrpour 2
  • Behrouz Ghorbanzadeh 3
1 MSc in Exercise Physiology, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, Azarbaijan Shahid Madani University, Tabriz, Iran.
2 Assistant Professor, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, Azarbaijan Shahid Madani University, Tabriz, Iran.
3 Associate Professor, Department of Sport Sciences, Faculty of Educational Sciences and Psychology, Azarbaijan Shahid Madani University, Tabriz, Iran.
چکیده [English]

Aim:  The aim of this study was to investigate the effects of short-term caffeine supplementation on athletes' electroencephalographic signals during a strenuous exercise session.  Methods: This quasi-experimental study consisted of a female student-athlete aged 24-28 years with at least two years of experience in sports. From this population, 20 people who voluntarily had the necessary conditions to enter this study were selected as a sample and were randomly divided into two groups of 10: experimental group (athlete consuming caffeine supplement) and control group (athlete taking placebo). And capsules containing caffeine (at a dose of 6 mg / kg body weight) and starch were consumed by each subject without knowing the contents of the capsule and one hour before the start of the exhausting protocol. For both groups, Bruce exhausted exercise protocol was performed to the point of fatigue, which consisted of six to seven three-minute steps with varying inclination and speed of the turntable. Also, all subjects were measured brain waves by electroencephalography in three stages (half an hour before caffeine consumption and one hour after caffeine consumption and after the exhaustion test).  Results: The results of this study showed that a session of strenuous exercise along with short-term caffeine supplementation in athletes causes significant changes in delta waves in the right hemisphere forehead and beta waves in the left hemisphere forehead (P <0.05). Conclusion: Short-term caffeine supplementation before participating in an exhausting exercise activity session can improve electroencephalographic signals in athletes.
 

کلیدواژه‌ها [English]

  • Short-term caffeine supplementation
  • Electroencephalography waves
  • Exhaustive exercise

   

 

This is an open access article distributed under the following Creative Commons license: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

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