تأثیر هشت هفته تمرین هیپوکسی اینتروال بر سطح سرمی عامل نوروتروفیک مشتق از مغز زنان فعال

نوع مقاله : علمی - پژوهشی

نویسندگان

دانشکده تربیت بدنی و علوم ورزشی، دانشگاه خوارزمی، تهران، ایران

چکیده

هدف: در این تحقیق تأثیر هشت هفته تمرین هیپوکسی اینتروال )روش کنترل تنفس( بر سطح سرمی عامل نوروتروفیک مشتق
از مغز )BDNF )در زنان فعال بررسی شد.
روشها: چهارده نفر از زنان فعال بهطور تصادفی در دو گروه کنترل )هفت نفر( و تجربی )هفت نفر( قرارگرفتند. گروه کنترل به مدت
هشت هفته دویدن اینتروال را تحت شرایط عادی و گروه تجربی دویدن اینتروال را در شرایط هیپوکسی انجام دادند. نمونه خونی برای
تعیین مقدار سطوح سرمیBDNF درآغاز دوره تمرینی و 24 ساعت پس از آخرین جلسه تمرینی در هفته هشتم از هر دو گروه گرفته
شد. برای بررسی نرمال بودن توزیع دادهها از آزمون گلموگروف-اسمیرنوف و بررسی همگن بودن واریانس گروهها از آزمون لوین استفاده
شد. برای تجزیهوتحلیل اطالعات از روشهای آماری تی همبسته و مستقل در سطح معناداری )05/0≥P )استفاده شد.
نتایج: نتایج تحقیق نشان داد که سطوح سرمیBDNF پس از هشت هفته تمرین هیپوکسی اینتروال در مقایسه با تمریناینتروال افزایش
معناداری یافته است. بررسی اختالف بینگروهی نشان داد که بین پسآزمون گروه کنترل و تجربی اختالف معناداری وجود دارد
)036/0=P.)همچنیننتایج بررسیاختالف درونگروهینشان داد که بینپیشآزمون و پسآزمون گروه کنترل بعد از هشت هفته دویدن
اینتروال اختالف معناداری وجود نداشت )157/0=P،)در صورتی که در گروه تجربی این اختالف قابلمالحظه بود)011/0=P.)
نتیجهگیری: نتایج بهدست آمده از پژوهش نشان داد که انجام هشت هفته تمرین هیپوکسی اینتروال تاثیر مثبتی بر سطح سرمی
BDNF زنان فعال داشته است. در نتیجه از نظر زمان انجام تمرین بدنی، هزینه و نحوه اجرا جایگزین مناسبی برای تمرین در ارتفاع
و تمرین انسدادی میباشد. بنابراین توأم نمودن تمرینات ورزشی با هیپوکسی و بهدست آوردن نتایج مطلوب در مدت زمان کمتر
راهبرد مناسبی بهنظر میرسد.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of eight-week interval hypoxic training on serum level of brain-derived neurotrophic factor in active women

نویسندگان [English]

  • Atefe Bagheri
  • Ali Kazemi
Faculty of Physical Education and Sport Science, Kharazmi University, Tehran, Iran
چکیده [English]

Purpose: In the present study, the effect of eight weeks of interval hypoxic training (respiratory control
method) on the serum level of Brain-derived neurotrophic factor (BDNF) in active women was envestigated.
Methods: Fourteen active women were randomly assigned to either the control (n=7) or experimental (n=7)
group. The women in the control group performed running interval training under normoxi condition and the
subjects in the experimental group performed runnig interval under hypoxic condition for eight weeks. At the
beginning of the survey and 24 hours after the last training session of the eighth week, the blood samples of
both groups were collected to determine serum Brain-derived neurotrophic factor level. KolmogorovSmirnov and Leven's test were used to determine normal distribution of data and homogeneity variation of
groups, respectively. For data analysis, statistical methods including paired and independent-samples t-test
at a significance level (p≤0.05) were used.
Results: The results showed a significant increase in serum levels of Brain-derived neurotrophic factor after
eight-week interval hypoxic training compared to the interval training. In this regard, the study of
betweengroups’differences showed that there is significant difference between post-test phase of control
and experimental groups (P≤0.036). While, the study of withingroups’ differences showed that there was no
significant difference between pre and post-test phase in control group after eight-week interval training
(P=0.157).The difference was significant in experimental group (P≤0.011).
Conclusions: The results of the present study suggest interval hypoxic training has an additive effect in the
levels of Brain-derived neurotrophic factor in active women. Thus, it is a good substitution for training at
altitude and blood flow restriction training in terms of time of performing physical activity, cost and
implementation. Therefore, combining sport training with hypoxic and obtaining the desired results in shorter
time seems to be an appropriate strategy. 

کلیدواژه‌ها [English]

  • Keywords: Interval training with free-breathing method
  • Interval hypoxic training with breath-holding method
  • Brain-derived neurotrophic factor
  • Active women
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  • تاریخ دریافت: 24 مهر 1396
  • تاریخ بازنگری: 27 بهمن 1396
  • تاریخ پذیرش: 07 اسفند 1396
  • تاریخ اولین انتشار: 01 شهریور 1397
  • تاریخ انتشار: 01 شهریور 1397