رفتار حرکتی

اثر فعالیت بدنی با سطوح متفاوت بار شناختی بر امواج مغزی قشر سینگولیت

نوع مقاله : مقاله پژوهشی

نویسندگان

مهتا اسکندرنژاد 1
فهیمه رضائی 2

1 دانشیار رفتار حرکتی، دانشگاه تبریز

2 دانشجوی دکتری رفتارحرکتی، دانشگاه ارومیه

https://doi.org/10.22089/mbj.2019.5244.1613
چکیده
فعالیت­های بدنی و شناختی اثرهای مثبتی بر عملکردهای شناختی دارند، اما به­ندرت در ترکیب با یکدیگر استفاده شده­اند؛ ازاین رو، مطالعۀ حاضر با هدف بررسی اثر فعالیت بدنی با سطوح متفاوت بار شناختی بر امواج مغزی قشر سینگولیت انجام شد. در این پژوهش نیمه­تجربی، 30 دانشجوی دختر کم­تحرک با متوسط سنی 92/1 ± 63/22 سال به روش نمونه­گیری دردسترس انتخاب شدند و براساس جایگزینی تصادفی در سه گروه 10 نفره (فعالیت بدنی بدون بار شناختی، فعالیت بدنی با بار شناختی و کنترل) قرار گرفتند. نمونه­های دو گروه تجربی به­مدت 16 جلسه در برنامۀ تمرینی مخصوص به گروه خود قرار گرفتند، اما گروه کنترل به فعالیت روزانۀ خود پرداختند. قبل و بعد از برنامۀ تمرینی، امواج مغزی با استفاده از دستگاه EEG در حالت استراحت و با چشمان باز ثبت شد و داده­های نواحی Fz، Cz و Pz در امواج مغزی دلتا، تتا، آلفا و بتا با استفاده از روش آماری تحلیل کوواریانس چندمتغیره و آزمون تعقیبی بونفرونی در سطح معناداری 05/0 تحلیل شد.نتایج نشان داد که موج مغزی دلتا در ناحیۀ Fz کاهش یافت و موج مغزی آلفا در ناحیۀ Pz از نظر آماری افزایش معناداری در شرکت‌کنندگان هر دو گروه آزمایش داشت، اما تفاوت معناداری بین اثرگذاری فعالیت بدنی با و بدون بار شناختی بر امواج مغزی قشر سینگولیت مشاهده نشد. براساس یافته­های این مطالعه، بهره­گیری از هر نوع فعالیت بدنی (با و بدون بار شناختی)، احتمالاً بتواند شرایط تحریک نورون­ها را در سطح قشر سینگولیت مغز فراهم آورد و باعث ایجاد سازگاری­هایی در دستگاه عصبی شود.

کلیدواژه‌ها

ایروبیک
قشر مغز
الکتروانسفالوگرافی

موضوعات

عنوان مقاله English

The Effect of Physical Activity with Different Levels of Cognitive Load on the Cingulate Cortex's Brain Waves

نویسندگان English

Mahta Eskandarnejad 1
Fahimeh Rezaei 2
1 Associate Professor of Motor Behavior, University of Tabriz
2 Ph.D. Student of Motor Behavior, Urmia University
چکیده English

Physical and cognitive activities have positive effects on cognitive functions, but have been rarely applied in combination with each other. Therefore, the aim of present study was to investigate the effect of physical activity with different levels of cognitive load on the cingulate cortex's brain waves. The present study is semi-experimental. 30 sedentary female students with an average age 22.63 ± 1.92 years were selected by convenience sampling and equally divided into three groups (physical activity without cognitive load, physical activity with cognitive load and control). The experimental groups practiced specific training program for 16 sessions, but the control group performed their daily activities. Brain waves, before and after the training program, was recorded using EEG device in resting position and with open eyes. Fz, Cz and Pz data in the Delta, Theta, Alpha and Beta brain waves were analyzed using MANCOVA and Bonferroni post-hoc test in the significant level of 0.05. The results showed a significant decrease for Delta brain wave in Fz and a significant increase for Alpha brain wave in Pz among participants into both experimental groups. On the other hand, there was no significant difference between the effects of physical activity with and without cognitive load on the cingulate cortex's brain waves. According to the findings of the present study, physical activity with and without cognitive load could possibly provide the conditions for stimulation of neurons in the cingulate cortex, which may lead to adaptation in the nervous system.

کلیدواژه‌ها English

: Aerobic
Cerebral Cortex
Electroencephalography
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رفتار حرکتی
دوره 12، شماره 40
تابستان 1399
تیر 1399
صفحه 17-36

  • تاریخ دریافت 26 آذر 1396
  • تاریخ بازنگری 11 دی 1397
  • تاریخ پذیرش 15 دی 1397

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