نوع مقاله : مطالعه پژوهشی اصیل

نویسندگان

1 استادیار رفتار حرکتی، گروه تربیت‌بدنی، واحد علی‌آباد کتول، دانشگاه آزاد اسلامی، علی‌آباد کتول، ایران

2 استادیار رفتار حرکتی، پژوهشگاه تربیت‌بدنی و علوم ورزشی

3 استادیار رفتار حرکتی، گروه تربیت‌بدنی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران

چکیده

هدف این پژوهش تعیین تأثیر خستگی محیطیبر ویژگی‌های زمانی تصویرسازی ذهنی در شناگران ماهر و غیرماهر بود. تعداد 30 شناگر مرد (15 غیرماهر و 15 ماهر) در دامنة سنی 18 تا 24 سال به‌صورت تصادفی انتخاب شدند و مدت زمان تصویرسازی آن‌ها (بینایی درونی، بینایی بیرونی و حرکتی) در شنای کرال سینة 100 متر، قبل و بعد از خستگی محیطی (تمرین شنای آزاد با شدت 70 درصد ضربان قلب بیشینه تاحد واماندگی) اندازه‌گیری شد. داده‌ها با استفاده از تحلیل واریانس مختلط در سطح اطمینان 95 درصد تحلیل شدند. براساس نتایج، دقت تصویرسازی ورزشکاران ماهر بیشتر از غیرماهر است و خطای زمان‌بندی در تصویرسازی حرکتی بیشتر از تصویرسازی بینایی است. خستگی، خطای زمان‌بندی را برای هر سه نوع تصویرسازی و هر دو گروه غیرماهر و ماهر افزایش می‌دهد. نتیجه اینکه کنترل زمان‌بندی تصویرسازی در شرایط خستگی برای اثربخشی مداخلات ضروری است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Effect of Peripheral Fatigue on Temporal Properties of Mental Imagery among Unskilled and Skilled Swimmers

نویسندگان [English]

  • Amir Dana 1
  • Saleh Rafiee 2
  • Mir Hamid Salehian 3

1 Assistant Professor of Motor Behavior, Department of Physical Education, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

2 Assistant Professor of Motor Behavior, Sport Science Research Institute of Iran

3 Assistant Professor of Motor Behavior, Department of Physical Education, Tabriz Branch, Islamic Azad University, Tabriz, Iran

چکیده [English]

The purpose of this study was to determine the effect of peripheral fatigue on temporal properties of mental imagery among unskilled and skilled swimmers. To this end, 30 male swimmers (15 skilled and 15 unskilled) in age range of 18 to 24 years old were randomly selected and their imagery duration (internal visual, external visual, kinesthetic) in the 100 meters front crawl before and after peripheral fatigue (free style swimming exercise with 70% of maximum heart rate intensity until exhaustion) were measured. The data were analyzed using mixed Anova at 95% confidence level. Based on the results, imagery accuracy of skilled athletes was higher than unskilled and timing error in kinesthetic imagery was more than visual imagery. The fatigue enhanced timing error for all three imagery types and both unskilled and skilled groups. Conclusion is that controlling of imagery timing in fatigue condition is necessary for interventions’ effectiveness.

کلیدواژه‌ها [English]

  • Mental Imagery
  • Timing
  • Swimming
  • Fatigue
  • Expertise Level
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