پژوهش در طب ورزشی و فناوری

اثر 10 جلسه تحریک دوگانه الکتریکی مغز (tDCS) بر عملکرد، سرسختی ذهنی و فشار ادراک‌شده شناگران حرفه‌ای

نویسندگان

مینا خنتان 1
بهروز عبدلی 2
علیرضا فارسی 3

1 دکتری رفتار حرکتی، دانشکده علوم ورزشی و تندرستی، دانشگاه شهید بهشتی، تهران، ایران.

2 استاد گروه علوم رفتاری، شناختی و فناوری ورزشی، دانشکده علوم ورزشی و تندرستی، دانشگاه شهید بهشتی، تهران، ایران

3 استاد گروه علوم رفتاری، شناختی و فناوری ورزشی، دانشکده علوم ورزشی و تندرستی، دانشگاه شهید بهشتی، تهران، ایران.

چکیده
مقدمه و هدف: تحریک جریان مستقیم فرا جمجمه‌ای (tDCS) از جدیدترین روش­ها جهت ارتقای عملکرد ورزشی و آمادگی روانی ورزشکاران حرفه­ای است. در پژوهش حاضر، اثرات 10 جلسه tDCS آندال، دوگانه هم‌زمان در یک نیمکره مغز، در نواحی قشر حرکتی اولیه (M1) و قشر پیش­پیشانی پشتی (DLPFC) را بر عملکرد شنا، سرسختی ذهنی و فشار ادراک‌شده بررسی کردیم.

روش: 20 شناگر حرفه­ای مرد (سن: 86/2±00/19 سال) به‌صورت تصادفی به دو گروه tDCS (10=n) و شاهد (10=n) تقسیم شدند. روز اول، پرسش­نامه سرسختی ذهنی (SMTQ)، روز بعد آزمون عملکرد 100 متر شنای آزاد و مقیاس فشار ادراک‌شده (RPE) به­عنوان پیش‌آزمون مورد ارزیابی قرار گرفتند. از روز سوم، 10 جلسه tDCS، هر جلسه به مدت 20 دقیقه و شدت 2 میلی­آمپر، نیم ساعت پس از تمرین متداول شنا، سه روز در هفته اعمال شد. 48 ساعت پس از دهمین جلسه tDCS، ارزیابی­ها تکرار شدند. تجزیه­وتحلیل آماری با ANCOVA انجام شد.

یافته‌ها: پس از ده جلسه tDCS، عملکرد شنا به‌طور معنی‌داری بهبود یافت؛ نمره کل سرسختی ذهنی به‌طور معنی‌داری افزایش یافت و تغییر معناداری در RPE مشاهده نشد.

نتیجه‌گیری نهایی: بر این اساس، tDCS چند جلسه‌ای همراه با تمرینات متداول برای بهبود عملکرد شناگران و جنبه‌های روان‌شناختی توصیه شده که می‌تواند به­عنوان یک روش آماده­سازی مغزی برای بالا بردن سرسختی ذهنی و عملکرد ورزشی در نظر گرفته شود.

کلیدواژه‌ها

تحریک مغز
عملکرد
آمادگی روانی
ورزشکار حرفه‌ای
سرسختی ذهنی

عنوان مقاله English

Effects Of 10-Session Dual Transcranial Direct Current Stimulation (TDCS) On Professional Swimmers Performance, Mental Toughness And Perceived Exertion

نویسندگان English

Mina Khantan 1
Behrouz Abdoli 2
Alireza Farsi 3
1 Department of Cognitive and Behavioral Science and Technology in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.
2 Department of Cognitive and Behavioral Science and Technology in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.
3 Department of Cognitive and Behavioral Science and Technology in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.
چکیده English

Aim: Transcranial direct current stimulation (tDCS) is one of the newest methods in order to improve the athletic performance and mental preparation of professional athletes. In this study, we investigated the effects of 10-session unihemispheric concurrent dual-site anodal-tDCS (a-tDCS) of the primary motor cortex (M1) and dorsolateral prefrontal cortex (DLPFC), on swimming performance, mental toughness (MT) and perceived exertion.

Methods: 20 male professional swimmers (Age: 19.00±2.86 yrs) were randomly divided into tDCS (n=10) and sham (n=10) groups. On the first day, the Mental Toughness Questionnaire (SMTQ), next day, the 100-meter freestyle swimming performance test, and the rate of perceived exertion scale (RPE) were evaluated as pre-tests. From the third day, 10 sessions of tDCS were applied, each session a current of 2mA for 20 min, half an hour after the usual swimming exercise, three days a week. 48 hrs following 10th session of tDCS, evaluations were repeated. ANCOVA was used for statistical analysis.

Result: After 10 sessions of tDCS, swimming performance improved significantly; The total MT score increased significantly and no significant change was observed in RPE.

Conclusion: Based on this, multi-session tDCS combined with regular training is recommended to improve swimmers performance and psychological aspects that could be considered as a brain conditioning method to increase mental toughness and sports performance.

کلیدواژه‌ها English

Brain Stimulation
performance
Psychological Preparation
Professional Athlete
Mental toughness
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