تاثیر هشت هفته تمرین ترکیبی بر نسبت هورمون رشد به عامل رشد شبه انسولین یک سرم زنان سالمند

نوع مقاله : علمی - پژوهشی

نویسندگان

داﻧﺸﮕﺎه ﺷﻬﺮﮐﺮد،

چکیده

هدف: امروزه استفاده از الگوهای متفاوت تمرین بویژه تمرینات ترکیبی در بین سالمندان متداول است. تاثیر تمرینات ورزش ترکیبی بر سطوح هورمون ها و عوامل رشدی سالمندان مورد بررسی چندانی قرار نگرفته است. هدف تحقیق حاضر تاثیر 8 هفته تمرین ترکیبی بر سطوح هورمون رشد، IGF-1 و نسبت GH به IGF-1 سرمی زنان سالمند بود. روش تحقیق: در این تحقیق نیمه تجربی با طرح پیش آزمون و پس آزمون، تعداد 21 نفر از زنان سالمند 70- 55 سال انتخاب و بطور تصادفی ساده در دو گروه تمرین ترکیبی (12n=) و کنترل (9n=) تقسیم شدند. برنامه­ تمرینی به مدت 8 هفته و 3 روز در هفته انجام شد. از آزمون تی وابسته جهت تغییرات درون گروهی و از آزمون تی مستقل جهت بررسی اختلاف بین دو گروه استفاده شد. نتایج: نتایج این تحقیق نشان داد مقدار GH، IGF-1 و نسبت GH/IGF-1 پس از تمرین ترکیبی تغییر معنی­داری نیافت (05/0 ≤p ). وزن (005/0=p)، شاخص توده بدنی (005/0=p) و درصد چربی بدن (001/0=)p، پس از 8 هفته تمرین ترکیبی کاهش معنی­داری یافت. افزایش معنی­داری در میزان VO2max مشاهده شد (024/0=p ).  نتیجه‌گیری: در این تحقیق به واسطه انجام 8 هفته تمرین ترکیبی نسبت GH/IGF-1 اندکی افزایش داشت، هرچند معنی­دار نبود. ممکن است انجام این تمرین در طولانی مدت منجر به تغییر GH و IGF-1 گردد. با توجه به بهبود ترکیب بدنی  و توان هوازی، ممکن است انجام این تمرین در طولانی مدت بر نحوه عملکرد دستگاه قلبی عروقی اثر مفیدی داشته باشد و از بروز بیماری آتروسکلروزیس جلوگیری نماید.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of 8 Weeks Combined Training on The Ratio of Growth hormone to Insulin-like growth factor1 of Elderly Women

چکیده [English]



Purpose: The use of different models of training, especially combined training exercises are common
among the elderly. The effect of combined training exercises on hormones and growth factors levels have
been little studied in aging. The purpose of this study was to investigate the effect of 8 weeks concurrent
training on growth hormone, IGF-1 serum concentration and GH/IGF-1 ratio in elderly women.Methods:
In this quasi-experimental study with pre test and post test design, twenty-one healthy elderly women (55-
70 years) were randomly placed into two groups, concurrent training (n=12) and control (n=9) groups.
Training program was done eight weeks, 3 times per week. In order to compare data within and between
groups, dependent t-test and independent t-test was used respectively. Results: The data showed GH,
IGF-1 and GH/IGF-1 ratio were not significantly changed (P≥0.05) following combined training. Also, a
significant decrease observed in body mass(P=0.005), BMI(P=0.005) and body fat percentage (P=0.001)
following 8 weeks combined training (P≤0.05) . VO2max increase significantly (P = 0.024) Conclusion:
In this study, 8 weeks of combined training led to non-significant increase in GH/IGF-1. Maybe, this
training in long-term leads to changes in GH and IGF-1. Therefore, Due to improvements in body
composition and aerobic power, maybe performing the long-term training program have a beneficial
effect on the performance of the cardiovascular system and can be prevented from developing
atherosclerosis.

کلیدواژه‌ها [English]

  • GH
  • IGF-1
  • GH/IGF-1 and combined training
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  • تاریخ دریافت: 30 خرداد 1395
  • تاریخ بازنگری: 22 خرداد 1403
  • تاریخ پذیرش: 11 دی 1399
  • تاریخ اولین انتشار: 11 دی 1399
  • تاریخ انتشار: 01 آذر 1394