پژوهش در مدیریت ورزشی و رفتار حرکتی

شواهدی برخلاف برنامه حرکتی تعمیم یافته به وسیله الگوی هم فعالی عضلات دست بعد از تمرین انبوه

نویسندگان

مهدی نبوی نیک 1
حمیدرضا طاهری 2
علیرضا صابری کاخکی 2
حمیدرضا کبروی 3

1 دانشگاه مازندران

2 دانشگاه فردوسی مشهد

3 دانشگاه آزاد اسلامی واحد مشهد

https://doi.org/10.61186/JRSM.13.25.74
چکیده
تمرین های انبوه این سوال را ایجاد کرده است که ممکن است مدیریت طبقه حرکات به وسیله یک برنامه حرکتی تعمیم یافته به دلیل تمرین های انبوه دچار تغییر شود. هدف از پژوهش حاضر این است که بوسیله بررسی الگوی هم فعالی و نسبت فعالیت عضلات موافق به مخالف دست، شواهدی را برای این فرضیه فراهم کند. از هفت بازیکن باتجربه دارت خواسته شد از فاصله استاندارد دارت و شش فاصله دورتر و نزدیکتر، در مجموع 252 پرتاب را به هدف اجرا کنند. نتایج نشان داد که دست کم در پنج نمونه از هفت نمونه تحقیق، اختلاف معناداری بین الگوی هم فعالی عضلات در فاصله چهار با شش فاصله دیگر وجود داشت. یافته های هم فعالی عضلات دست، از وجود برنامه حرکتی تعمیم یافته در فاصله چهار حمایت نمی کنند به طوری که عملکرد بازیکنان ماهر در فاصله بسیار تمرین شده دارای دامنه تعمیم پذیری محدودی است.

کلیدواژه‌ها

الکترومایوگرافی
برنامه حرکتی تعمیم یافته
تمرین انبوه
مهارت های ویژه
هم فعالی عضلات

عنوان مقاله English

Evidences Against Generalized Motor Program by Co-Activation Pattern of Arm Muscles After Massive Amount of Practice

نویسندگان English

Mahdi Nabavinik 1
Hamidreza Taheri 2
Alireza Saberi Kakhki 2
Hamidreza Saberi Kakhki 3
1 University of Mazandaran
2 Ferdowsi University of Mashhad
3 Islamic Azad University of Mashhad
چکیده English

Massive amount of practice over many years raise the question that handling class of action by generalized motor program may modify over years. The purpose of the present study is to provide evidences to investigate this hypothesis by examining the pattern of co-activation and agonist to antagonist activity ratio. Seven experienced darts players were asked to execute from standard dart distance (fourth distance) and six other farther and nearer distances, making 252 throws. Relatively, the results showed that at least in five from the seven samples, there was a significant difference in muscle co-activation between fourth and six other distances. These findings do not support the existence of a generalized motor program at fourth distance so that performance of elite players met limited generalizability

کلیدواژه‌ها English

Electromyography
Generalized motor program
Massive amount of practice
especial skills
Muscle co-activation
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