بررسی تاثیر 8 هفته تمرین ترکیبی بر سطوح استراحتی لاکتوفرین سرم زنان سالمند غیرفعال

نوع مقاله: مقاله پژوهشی

نویسنده

استادیار، گروه تربیت بدنی و علوم ورزشی، دانشکده ادبیات و علوم انسانی، دانشگاه شهرکرد، شهرکرد، ایران.

چکیده

مقدمه: عملکرد سیستم ایمنی بدن با افزایش سن کاهش می­یابد. بهبود عملکرد ایمنی از طریق فعالیت ورزشی بسیار اهمیت دارد. لذا هدف تحقیق حاضر بررسی تأثیر 8 هفته تمرین ترکیبی بر غلظت لاکتوفرین افراد سالمند غیرفعال است.
مواد و روش ­ها: در این تحقیق نیمه تجربی، تعداد 21 نفر از زنان سالمند سالم غیرفعال با دامنه سنی 65-60 سال انتخاب و به طور تصادفی ساده در دو گروه تمرین ترکیبی 12 نفر و کنترل 9 نفر تقسیم شدند. برنامه­ تمرینی به مدت 8 هفته و 3 روز در هفته انجام شد. برنامه­ تمرین استقامتی شامل کار بر روی دوچرخه ثابت با شدت 88-60 درصد حداکثر ضربان قلب و برنامه تمرین قدرتی شامل تمرین­های منتخب بالاتنه و پایین تنه (با شدت 75-40 درصد حداکثر تکرار بیشینه (1RM)، 12-8 تکرار) بود. 24 ساعت قبل و 48 ساعت پس از اتمام دوره تمرینی، خونگیری به منظور ارزیابی غلظت سرمی لاکتوفرین به روش الایزا انجام شد. از آزمون تی وابسته جهت تغییرات درون گروهی و از آزمون تی مستقل جهت بررسی اختلاف بین دو گروه استفاده شد.
یافته ­ها: میزان لاکتوفرین به طور معنی­داری در گروه تجربی کاهش یافت (012/0>p). همچنین 8 هفته تمرین ترکیبی منجر به کاهش وزن، BMI و درصد چربی بدن گردید (05/0>p).
نتیجه­ گیری: 8 هفته تمرین ترکیبی، ترشح لاکتوفرین را در زنان سالمند کاهش می­دهد و این کاهش ممکن است فرد را در معرض خطر بیشتر عفونت و بیماری قرار دهد.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of an Eight-week Course of Combined Exercise Model on Serum Lactoferrin during Rest in Elderly Women

نویسنده [English]

  • E Banitalebi
Assistance professor, Dept of exercise physiology, Shahrekord University, Shahrekord, Iran.
چکیده [English]

Introduction: The Immune system usually weakens with age so it is important to strength this system by different mechanism including physical activity. The purpose of this study was to investigate the effect of eight-week course of combined exercise model on serum lactoferrin during rest in elderly women. 
Materials and Methods: In this semi-experimental study, 21 healthy elderly women aged 60-65 years were included and then were randomely divided into groups of exercise (n=12) and control (n=9). The exercise group received two training programs of endurance and strength for eight weeks, trice a week course. The endurance training performed on a cycle ergometer (intensity: 60-88 % MHR) and strength training involved selected upper and lower body workout (intensity: 40-75 1RM, 8-18 repeat). Serum lactoferrin concentrations were measured 24 hours before and 48 hours after the protocols of training by ELISA methods. Intra- and inter- group comparison was performed using dependent t-test for intra-group changes and independent t-test for inter-group differences. 
Results: The results showed that the serum lactoferrin level was significantly reduced in the experimental group (p≤0.05). Also, the eight- week exercise course led to weight loss, reducing the BMI and body fat percentage (p≤0.05).
Conclusion: The results showed that exercise may decrease the serum level of lactoferrin in elderly women.

کلیدواژه‌ها [English]

  • Lactoferrin
  • Concurrent training
  • Elderly Women
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