مقایسۀ تأثیر دو الگوی فعالیت ورزشی ساده (رکاب زدن) و پیچیده (ایروبیک) بر مقادیر عامل رشد عصبی مشتق از مغز و عملکرد شناختی دختران نوجوان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس‌ارشد فیزیولوژی ورزشی، دانشگاه شاهد، تهران، ایران

2 استادیار، گروه تربیت بدنی و علوم ورزشی، دانشکدۀ علوم انسانی، دانشگاه شاهد، تهران، ایران

چکیده

 
هدف از پژوهش حاضر، مقایسۀ تأثیر دو الگوی فعالیت ورزشی (ساده و پیچیده) بر مقادیر سرمی عامل رشد عصبی مشتق از مغز (BDNF) و عملکرد شناختی دختران نوجوان بود. بدین‌منظور، نه آزمودنی (با میانگین سنی 9/0±3/17 سال و شاخص تودۀ بدنی 02/3±4/22 کیلوگرم بر متر مربع) به فاصلۀ یک هفته، دو فعالیت ورزشی پیچیده (ایروبیک) و ساده (رکاب زدن)، با شدت متوسط 50 تا 60 درصد حداکثر اکسیژن مصرفی را انجام دادند. فعالیت ورزشی به مدت 30 دقیقه در سه نوبت 10 دقیقه­ای با فواصل استراحت دو دقیقه­ انجام گرفت. قبل و پس از فعالیت ورزشی به‌منظور سنجش BDNF از آزمودنی­ها نمونۀ خون گرفته شد و برای ارزیابی عملکرد شناختی، آزمون­های شناختی ارقام نماد و رنگ - واژۀ استروپ توسط آزمودنی­ها کامل شد. برای ارزیابی داده­ها از آزمون آماری t همبسته استفاده شد (05/0>P). بر مبنای یافته­های به‌دست­آمده، تفاوت معناداری در میزان سرمی عامل رشد عصبی مشتق از مغز در مقایسۀ دو الگوی فعالیت ورزشی ساده و پیچیده یافت نشد (723/0=P). همچنین با توجه به نتایج آزمون شناختی رنگ واژۀ استروپ، فعالیت ورزشی پیچیده نسبت به فعالیت ورزشی ساده بهبود معناداری در عملکرد شناختی را نشان داد (05/0 >P). به‌طورکلی به‌نظر می­رسد، الگوی فعالیت ورزشی (ساده و پیچیده) در دختران نوجوان مشابه آنچه در این پژوهش استفاده شد، تأثیر معناداری بر پاسخ عامل رشد عصبی مشتق از مغز ندارد. با وجود این، فعالیت ورزشی پیچیده دست­کم بر برخی از جنبه­های عملکرد شناختی تأثیر معنادار مطلوب­تری دارد و می­تواند موجب بهبود عملکرد شناختی شود.

کلیدواژه‌ها


عنوان مقاله [English]

A Comparison of the Effect of Simple (Cycling) and Complex (Aerobic) Exercise Patterns on Brain Derived Neurotrophic Factor Levels and Cognitive Function in Adolescent Girls

نویسندگان [English]

  • Zeinab Rashki 1
  • Ali Samadi 2
  • Esamaeil Nasiri 2
1 MSc in Exercise Physiology, Shahed University, Tehran, Iran
2 Assistant Professor, Department of Physical Education and Sport Sciences, Faculty of Humanities, Shahed University, Tehran, Iran
چکیده [English]

 
The aim of the present study was to compare the effect of two exercise patterns (simple and complex) on serum levels of brain-derived neurotrophic factor (BDNF) and cognitive function in adolescent girls. 9 subjects (mean ±SD, age: 17.3±0.9 years; BMI: 22.4±3.02 kg/m2) with a one-week interval performed complex (aerobic) and simple (cycling) exercises with moderate intensity (50-60% of VO2max). The exercises were performed in 3 ten-minute sets with 2-3 minutes of rest intervals for 30 minutes. Before and after the exercise, blood samples were collected to measure BDNF. Digits - symbols and Stroop colors-word cognitive tests were completed to assess the cognitive function. Data were analyzed with paired sample t test (P<0.05). The results showed no significant difference in level of BDNF between two types of exercise patterns (P=0.723). Also, analysis of Stroop color-word cognitive test showed that complex exercise pattern significantly improved cognitive function in comparison with simple exercise (P<0.05). It generally seems that exercise pattern (simple and complex) in adolescent girls (similar to those employed in this study) had not significant effect on BDNF response. However, complex exercise at least has more suitable significant effects on some aspects of cognitive function and can improve this function.

کلیدواژه‌ها [English]

  • Exercise Pattern
  • Complex Exercise
  • Simple Exercise
  • Brain-Derived Neurotrophic Factor
  • Cognitive Function
  • Non-Athlete Adolescent Girls
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