تاثیر هشت هفته تمرین تناوبی بر سطوح پلاسمایی ملاتونین مردان مسن غیر فعال

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه تربیت بدنی، دانشگاه آزاد اسلامی واحد اهواز، اهواز، ایران

چکیده

مقدمه و هدف: ملاتونین نقش مهمی در فرآیندهای ریتمیک بدن دارد که بر اثر سالمندی میزان ترشح آن کاهش می یابد. هدف از تحقیق حاضر بررسی تاثیر هشت هفته تمرین تناوبی بر سطوح پلاسمایی ملاتونین مردان مسن غیر فعال بود.
مواد و روش ها: در پژوهش نیمه تجربی حاضر 20 مرد مسن غیرفعال به صورت نمونه گیری در دسترس انتخاب و به شیوه نمونه گیری تصادفی به دو گروه تجربی (10نفر) و کنترل (10نفر) تقسیم شدند. جهت بررسی تاثیر سالمندی بر سطوح ملاتونین، 10 مرد جوان غیرفعال به روش نمونه گیری هدفمند انتخاب شدند. پروتکل تمرینی شامل 8 هفته تمرین تناوبی با شدت 50 درصد ضربان قلب ذخیره (وهله فعالیت) و 30 درصد ضربان قلب ذخیره (وهله استراحت) بود. سطوح پلاسمایی ملاتونین در دو مرحله پیش آزمون و پس آزمون به روش الایزا مورد اندازه گیری قرار گرفت. جهت مقایسه پیش آزمون سه گروه از آزمون تحلیل واریانس یک راهه (آنوا) و برای مقایسه پس آزمون دو گروه مسن تمرین و مسن کنترل از آزمون تحلیل کوواریانس در سطح معناداری 05/0 استفاده شد.
نتایج: نتایج نشان داد که سالمندی منجر به کاهش معنی دار  سطوح پلاسمایی ملاتونین می شود (05/0>p). بین افزایش سن و سطوح ملاتونین نیز رابطه معکوس و معنی داری یافت شد (824/0-=r و 001/0=p). همچنین هشت هفته تمرین تناوبی باعث افزایش معنی دار سطوح ملاتونین در مردان گروه مسن تمرین شد (05/0>p).
نتیجه‌گیری: فعالیت های ورزشی بویژه از نوع تناوبی با افزایش سطوح ملاتونین در سالمندی، می توانند تغییرات ناشی از کاهش ترشح ملاتونین در سالمندی و تغییرات وابسته به آن بر سیستم های بدن را کاهش دهند یا روند آن را کند کنند.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of eight-week of interval training on plasma levels of melatonin in inactive elderly men

نویسندگان [English]

  • Mehdi Bostani
  • Mohammad Reza Bagdeli
Department of Physical Education, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
چکیده [English]

Background and Objective: Melatonin plays an important role in rhythmic processes that decreases its secretion due to aging. The aim of this study was to investigate the effect of eight-week of interval training on plasma levels of melatonin in inactive elderly men.
Materials and Methods: In this quasi-experimental study, 20 inactive elderly men were selected by available sampling and randomly divided into experimental (n=10) and control (n=10) groups. For evaluation of the effect of aging on melatonin levels, 10 inactive young men were selected by purposive sampling. The training protocol consisted of eight weeks of interval training with an intensity of 50% reserve heart rate (activity period) and 30% reserve heart rate (rest period). Plasma melatonin levels were measured by ELISA method in pre and post test. To compare the pre-test of the three groups the ANOVA test was used and to compare the post-test of the two groups of training elderly and control elderly the analysis of covariance at a significance level of 0.05 was used.
Results: The results showed that aging leads to a significant reduction in plasma melatonin levels (p<0.05). There was a significant inverse relationship between age and melatonin levels (r=-0.824 and p=0.001). Also, eight weeks of interval training significantly increased melatonin levels in older men in the training group (p<0.05).
Conclusion: Physical activities especially interval training with increasing the melatonin levels, can reduce or slow down the changes caused by decreased melatonin secretion and related changes in the body systems in old age.

کلیدواژه‌ها [English]

  • Interval exercise
  • Melatonin
  • Aging
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