اثر تمرینات هوازی و بی تمرینی متعاقب آن بر توجه ممتد و عامل رشد عصبی مشتق شده از مغز دانشجویان دختر ک متحرک

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشکده تربیت بدنی و علوم ورزشی، دانشگاه فردوسی، مشهد، ایران

2 دانشکده تربیت بدنی و علوم ورزشی، دانشگاه علامه طباطبائی، تهران، ایران

3 دانشکده تربیت بدنی و علوم ورزشی، دانشگاه شهید بهشتی، تهران، ایران

چکیده

هدف: مطالعات نشان میدهند فعالیت ورزشی تأثیر مثبتی بر برخی از جنبه های شناخت دارد. عامل رشد عصبی مشتق شده از مغز
( BDNF ( ازجمله شاخص های مؤثر در بیان عملکرد شناختی است که به تازگی در تحقیقات حوزۀ سلامت بررسی شده است. اطلاعات چندانی
در مورد چگونگی تأثیر هم زمان برنامۀ تمرینی ورزش و همچنین دوره های بی تمرینی بر توجه و BDNF موجود نیست؛ بنابراین پژوهش
حاضر باهدف تعیین تأثیر تمرینات هوازی و بی تمرینی متعاقب آن بر BDNF و توجه ممتد در دختران کم تحرک انجام شد .
روش ها: دوازده دانشجوی دختر کم تحرک )با میانگین سنی 92 / 1 ± 90 / 23 (، به صورت داوطلبانه در این تحقیق شرکت کردند.
این افراد تمرینات خود را بر اساس پروتکل تمرین هوازی شروع کرده و به مدت 4 هفته ادامه دادند. در سه مرحلۀ پیش آزمون، پایان
4 هفته تمرین و پس از 4 هفته بی تمرینی، آزمون پاسات و نمونه گیری خونی انجام شد. تجزیه وتحلیل داده ها با استفاده از تحلیل
واریانس با اندازه گیری مکرر و ضریب همبستگی پیرسون انجام شد.
نتایج: تمرین ورزشی منجر به افزایش معنادار در توجه ممتد شد ) 05 / 0 > P(. سطح BDNF سرم در اثر تمرین به طور معنی دار
کاهش یافت ) 05 / 0 > P ( که پس از 4 هفته بی تمرینی، سطوح هر دو متغیر به مقادیر اولیه خود بازگشتند . بااین حال، همبستگی
بین تغییرات آزمون توجه ممتد و بیان BDNF معنیدار نبود ) 85 / 0 = P .)
نتیجه گیری: نتایج نشان داد فعالیت ورزشی میتواند منجر به بهبود توجه ممتد دختران کم تحرک شود که با سازگاری در سطوح
BDNF سرمی همراه است؛ اگرچه این سازگاری ها در دوره بی تمرینی از بین می روند.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of aerobic training and following detraining on continuous attention and brain-derived neurotrophic factor in sedentary girl students

نویسندگان [English]

  • Asiyeh Dehghani 1
  • Ehsan Zareian 2
  • Khosro Ebrahim 3
1 Faculty of Physical Education and Sport Science, Ferdowsi University of Mashhad, Iran
2 Faculty of Physical Education and Sport Science, Allameh tabataba’i University, Tehran, Iran
3 Faculty of Physical Education and Sport Science, Shahid Beheshti University, Tehran, Iran
چکیده [English]

Purpose : Studies show that exercise has positive effects on the central nervous system and cognition. The brain-derived neurotrophic factor (BDNF) is an important factor affecting cognitive function and has been recently discussed in a bulk trend of efforts in the health context. Due to the inadequate information about the effects of aerobic training and detraining period on the attention and serum’s BDNF in sedentary girls, the aim of this study was to investigate the effect of 4 weeks of aerobic training on continuous attention, BDNF, and probable mechanisms of this effect (i.e. Neurotrophic factors) in sedentary girls.
Methods : Twelve sedentary girls (mean age= 23.90±1.92), voluntarily participated in the study. They started their workout exercises under the aerobic protocol for four weeks. The PASAT test and blood sampling were conducted in three stages including pretest, after four weeks of training and after following four weeks of the detraining period. To analyze the data, repeated measures and Pearson's correlation coefficient were applied at a significance level of P≤0.05.
Results : The results showed that four weeks of aerobic training led to a significant increase in continuous attention (P<0.05). However, the serum BDNF levels were negatively correlated with aerobic training (P<0.05). Both of these factors were restored after following four weeks of detraining. Also, the correlation between changes in the continuous attention and expression of BDNF was not statistically significant (P=0.85).
Conclusion: Generally, the findings indicated that physical activity can improve continuous attention and adaptation of serum’s BDNF. However, these adaptations were dissipated after detraining.

کلیدواژه‌ها [English]

  • Aerobic training
  • Attention
  • Detraining
  • Neurotrophic Factors
  • Sedentary

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فایل ها

سابقه مقاله

  • تاریخ دریافت: 23 شهریور 1395
  • تاریخ بازنگری: 25 مهر 1400
  • تاریخ پذیرش: 11 دی 1399
  • تاریخ اولین انتشار: 11 دی 1399
  • تاریخ انتشار: 01 بهمن 1397

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