تأثیر 8 هفته تمرینات دایره ای بر سطح سرمی عامل رشد عصبی (NGF) و عوامل آمادگی جسمانی زنان سالمند

نوع مقاله : مقاله پژوهشی Released under CC BY 4.0 license I Open Access I


1 دانشیار گروه فیزیولوژی ورزش دانشکده تربیت بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران

2 گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی، دانشگاه تبریز، تبریز، ایران



هدف: عوامل رشد سلول­های عصبی از قبیل عامل رشد عصبی ((NGF شکل پذیری و بقای نورون­ها را در مغز موجب می­شود. بقای نورون‌ها می‌تواند عوارض سالمندی را به تأخیر بیندازد و همچنین بهبود عوامل آمادگی جسمانی می‌تواند خطر زمین خوردگی سالمندان و در نتیجه هزینه تحمیلی برای درمان را کاهش دهد. بنابراین هدف پژوهش حاضر بررسی اثر 8 هفته تمرینات دایره­ای بر سطوح NGF و عوامل آمادگی جسمانی زنان سالمند بود. روش شناسی: این تحقیق از نوع  نیمه تجربی و با طرح پیش آزمون و پس آزمون بود که در آن 23 زن سالمند (سن 2/3 ± 84/64 سال، وزن 45/7 ± 71/72 کیلوگرم و قد 61/3 ± 09/157 سانتی متر) در دو گروه تمرین (12 نفر) و کنترل (11 نفر) شرکت و تمرینات دایره­ای منتخب شامل 12 حرکت مقاومتی و هوازی برای عضلات پایین تنه، بالا تنه و عضلات مرکزی بدن را سه جلسه در هفته با شدت 40 تا 60 درصد یک تکرار بیشینه به مدت یک ساعت در طی 8 هفته انجام دادند. عوامل آمادگی جسمانی و خون گیری 48 ساعت قبل و بعد از پروتکل (ناشتا) ارزیابی و جمع‌آوری شدند. عامل رشد عصبی به روش الایزا اندازه‌گیری شد. در تحلیل داده‌ها از آزمون شاپیروویلک برای طبیعی بودن توزیع داده‌ها و از آزمون آنوا 2×2 و تی مستقل در سطح معنی­داری 05/0p   استفاده شد. یافته‌ها: مقایسه بین گروهی نتایج پژوهش نشان داد، هشت هفته تمرینات دایره‌ای باعث افزایش معنی‌دار سطوح  NGF (001/0≥p) همچنین بهبود استقامت قلبی-عروقی (004/0=p)، استقامت عضلانی (001/0≥p) ، تعادل (009/0=p) و کاهش ترکیب بدنی (005/0=p) می­شود. نتیجه‌گیری: تمرینات دایره‌ای منظم می‌تواند عوامل آمادگی جسمانی سالمندان را بهبود بخشد. همچنین باعث تأخیر عوارض عصبی سالمندی شود.


عنوان مقاله [English]

The effect of 8 weeks of circuit training on serum levels of nerve growth factor (NGF) and physical fitness factors in elderly women

نویسندگان [English]

  • Javad Vakili 1
  • Vahid Sari-Sarraf 1
  • Fatemeh Baharavar 2
1 Associate professor of Exercise Physiology, Faculty of Physical Education and Sports Science, University of Tabriz,, Tabriz, Iran
2 Department of exercise physiology. Faculty of physicals education and sport science. University of Tabriz, Tabriz, Iran
چکیده [English]

Aim:  Nerve cell growth factors such as nerve growth factor (NGF) cause neuronal plasticity and survival in the brain. The survival of neurons can delay the effects of aging. Improving physical fitness factors can increase the risk of falling down and the treatment cost. The purpose of this study was to evaluate the effect of 8 weeks of circuit training on serum levels of NGF and physical fitness factors in elderly females. Method: This present study was a quasi-experimental research design with pre-test and post-test, among 23 elderly women (age: 64.84±3.2 years, weight: 72.71±7.45 kg and height: 157.09±3.61cm) that were divided into training (n=12) and control (n=11) groups. The training group performed selected circuit training, including 12 aerobic and resistance exercise for the lower and upper torso and central muscles of the body for three sessions per week with an intensity of 40 to 60% of 1RM for an hour and 8 weeks. Physical fitness factors has been measured and fasting blood sampling were taken 48 hours before the after the training protocol. Nerve growth factor was assessed by ELISA method. Shapiro-wilk test was used for normal data distribution, analysis of variance (ANOVA) 2 × 2 and independent t-test were used at a significance level of α <0.05 in data analysis. Result:  Inter-group comparison of the results showed that eight weeks of circular training significantly increased NGF level (p≥0.001) as well as improved cardiovascular endurance (p = 0.004), muscle endurance (p≥0.001), performance ( P = 0.009) and physical reduction (p = 0.005).. Conclusion: Regular circuit training could improve the physical fitness factors and also delay the neurological index in elderly women.

کلیدواژه‌ها [English]

  • Circuit base exercise
  • Physical fitness
  • NGF
  • Aging
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دوره 9، شماره 1
فروردین 1401
صفحه 72-82
  • تاریخ دریافت: 12 اسفند 1400
  • تاریخ بازنگری: 10 اردیبهشت 1401
  • تاریخ پذیرش: 12 اردیبهشت 1401
  • تاریخ اولین انتشار: 12 اردیبهشت 1401