نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار رفتار حرکتی، دانشگاه تبریز
2 دانشجوی دکتری رفتارحرکتی، دانشگاه ارومیه
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
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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