تأثیر هشت هفته تمرین هوازی بر عامل رگزایی و ترکیب بدن در زنان دارای اضافه وزن

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد تربیت بدنی و علوم ورزشی، دانشگاه فردوسی مشهد، دانشکده تربیت بدنی و علوم ورزشی، مشهد، ایران

2 . دانشیار فیزیولوژی ورزشی، دانشگاه فردوسی مشهد، دانشکده تربیت بدنی و علوم ورزشی، مشهد، ایران

3 استادیار فیزیولوژی ورزشی، دانشگاه فردوسی مشهد، دانشکده تربیت بدنی و علوم ورزشی، مشهد، ایران

4 دانشیار فیزیولوژی ورزشی، دانشگاه شهید بهشتی، دانشکده تربیت بدنی و علوم ورزشی، تهران، ایران

چکیده

سابقه و هدف :تمرینات استقامتی موجب افزایش چگالی مویرگی عضله اسکلتی و عضله قلبی می‌شود. عامل رشد اندوتلیال عروق (VEGF) مهم‌ترین عامل درگیر در فرایند رگزایی می‌باشد. توسعه بافت چربی وابسته به آنژیوژنز است و VEGF عامل اصلی و کلیدی برای وقوع آنژیوژنز در بافت چربی است. هدف از تحقیق حاضر، بررسی تأثیر هشت هفته تمرین هوازی بر عامل رشد اندوتلیال عروق (VEGF) و ترکیب بدن در زنان دارای اضافه وزن بود. روش تحقیق: این تحقیق از نوع تحقیقات نیمه تجربی با دو گروه آزمودنی(تجربی و کنترل) و طرح پیش آزمون و پس آزمون بود. در این مطالعه تعداد20 زن سالم غیرفعال داوطلب با میانگین سنی 77/2±15/25 سال و شاخص توده بدن 06/2±32/27 (کیلوگرم بر مترمربع) به دو گروه تجربی (10 نفر( و کنترل (10 نفر ) که از نظر BMI همگن شده بودند، تقسیم شدند. گروه تجربی در برنامه تمرین هوازی یک ساعت با شدت 75-55 درصد ضربان قلب بیشینه به‌طور فزاینده به مدت هشت هفته شرکت کردند. گروه کنترل در این مدت فعالیت عادی خود را انجام می‌دادند. خون‌گیری از هر دو گروه 48 ساعت پس از آخرین جلسه تمرین در حالت ناشتا انجام شد. برای تجزیه و تحلیل داده‌ها از آزمون‌ تی – استیودنت وابسته و ویلکاکسون جهت برآورد تفاوت‌های درون‌گروهی استفاده شد و سطح معنی‌داری 05/0 P< در نظر گرفته شد. نتایج تحقیق: یافته‌های تحقیق نشان داد که هشت هفته ورزش هوازی باعث افزایش معنادار VEGF به میزان (59%) و اکسیژن مصرفی بیشینه به میزان (63 %) در گروه تجربی شد، درحالی‌که میزان BMI (8/2%) کاهش معناداری یافت و همچنین توده چربی (4/3%) کاهش یافت. بحث و نتیجه‌گیری: با توجه به نتایج تحقیق هشت هفته تمرین هوازی به ‌طور فزاینده می‌تواند باعث افزایش عامل مؤثر در رگ زایی و بهبود ترکیب بدن در زنان دارای اضافه ‌وزن گردد.

کلیدواژه‌ها

عنوان مقاله [English]

The effects of eight weeks aerobic training on angiogenes factor and body composition in overweight women

چکیده [English]



Purpose: Endurance exercise increases density of capillary in skeletal muscle and cardiac muscle. Vascular Endothelial
growth Factor (VEGF) is an important factor involved in angiogenesis. The development of adipose tissue depends on
angiogenesis and VEGF is a key factor for the occurrence of angiogenesis in adipose tissue. The aim of the Present
research was the effect of aerobic exercise on vascular endothelial growth factor and body composition in overweight
women. Methods: This study is quasi-experimental study with two test groups (experimental and control) and pretest and
post-test. In this study, 20 inactive healthy female volunteers with a mean age of 25.15 ± 2.77 years and the body mass
index 27.32 have been divided into two groups ( experimental group (n = 10) and control (n = 10)) in which were matched
in terms of BMI, respectively. Experimental groups took part increasingly in a time-intensity aerobic exercise program
from 55 to 75 percent of maximum heart rate for eight weeks. The control group performed their normal activities. Blood
samples from both groups 48 h after the last training session were performed in the fasting state. To analyze the data to
evaluate, T-student and Wilcoxon tests were used. Differences within groups the significance level of p <0.05 was
considered to accept or reject hypotheses. Results: The findings showed that eight weeks of aerobic exercise causes a
significant increase in VEGF levels (59%) and maximum oxygen consumption rate (63%) in the experimental group,
While the BMI (8.2%) Decreased and as well as decreased fat mass (3.4%). Conclusions: According to the results of
eight weeks of aerobic exercise can considerably increase the influential factor in angiogenesis and improve the body
composition in the overweight women.

کلیدواژه‌ها [English]

  • Angiogenesis
  • Serum VEGF
  • Aerobic exercise
  • VO2max

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سابقه مقاله

  • تاریخ دریافت: 08 اسفند 1395
  • تاریخ بازنگری: 22 خرداد 1403
  • تاریخ پذیرش: 11 دی 1399
  • تاریخ اولین انتشار: 11 دی 1399
  • تاریخ انتشار: 01 آذر 1395

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