اثر هشت هفته تمرین تناوبی شدید بر تغییرات ضخامت انتیما-مدیای شریان‏های مرکزی و محیطی مردان دارای اضافه وزن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی گروه فیزیولوژی ورزش، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، تهران، ایران واستادیار فیزیولوژی ورزش، گروه علوم ورزشی، موسسه آموزش عالی خاوران، مشهد، ایران

2 .استاد تمام گروه فیزیولوژی ورزش، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، تهران، ایران

3 استاد تمام گروه فیزیولوژی ورزش، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، تهران، ایران

4 دانشیار گروه فیزیولوژی ورزش، دانشکده تربیت بدنی و علوم ورزشی دانشگاه تهران، تهران، ایران

چکیده

ارزیابی ضخامت انتیما –مدیای شریانی (IMT) روشی مناسب جهت پیش بینی اولیه آترواسکلروز است. هدف تحقیق، تعیین اثر هشت هفته تمرین تناوبی شدید (HIIT) بر تغییرات ضخامت انتیما-مدیای شریانی مردان دارای اضافه وزن بود. تحقیق از نوع تحقیقات نیمه تجربی با طرح پیش – پس آزمون بود. آزمودنی­ها 18 مرد دارای اضافه وزن (نمایه توده بدنی 2/4 ± 9/27 کیلوگرم/متر مربع) بودند که پس از انتخاب، آزمون حداکثر اکسیژن مصرفی بیشینه انجام گرفت و آزمودنی­ها به صورت تصادفی به دو گروه تمرین تناوبی شدید (12 نفر) و کنترل (6 نفر) تقسیم شدند. آزمودنی‏های گروه HIIT  هشت هفته و 3 جلسه در هفته، 20 تکرار 30 ثانیه‏ای (با 13 ثانیه استراحت بین هر تکرار) را با شدت 85 الی 90 درصد VO2peak تا انتهای هفته چهارم و 90 الی 95 درصد VO2peak تا انتهای هفته هشتم، انجام ‎دادند. پس از ارزیابی ترکیب بدن (با استفاده از  دستگاه مقاومت زیستی الکتریکی) و ضخامت انتیما-مدیا (شریان‏های کاروتید و فمورال با استفاده از اولتراسوند و روش B-Mode)، تجزیه و تحلیل آماری با استفاده از روش آنوای دو طرفه و سطح آلفای کمتر از 05/0 انجام شد. درصد چربی بدن آزمودنی‏ها در گروه تمرین تناوبی شدید به طور معناداری کاهش یافت(041/0=p). همچنین، کاهش معناداری در IMT شریان فمورال افراد با ضخامت کمتر از 9/0 میلی‏متر مشاهده شد(026/0=p). نتایج تحقیق بیانگر کاهش IMT شریان‏های مرکزی و محیطی متعاقب هشت هفته HIIT در مردان دارای اضافه وزن بود. همچنین این احتمال می‎رود که HIIT تنها باعث کاهش پلاک آترواسکلروزی در افراد با IMT کمتر از 9/0 میلی‏متر گردد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The effect of 8-week high intensity interval training on intima-media thickness of central and peripheral arteries in overweight men

نویسندگان [English]

  • Sadegh Abbasian 1
  • Ali Asghar Ravasi 2
  • R Souri 3
  • Sirous Choobineh 4
1 PhD student of exercise physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
2 Assistant professor of exercise physiology, Sport Sciences Group, Khavaran Institute of Higher Education, Mashhad, Iran
3 Assistant professor of exercise physiology, Sport Sciences Group, Khavaran Institute of Higher Education, Mashhad, Iran
4 Associate professor of exercise physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
چکیده [English]

The assessment of Intima-Media Thickness (IMT) is a crucial tool for primary prediction of atherosclerosis. The purpose of the study was to determine the effect of 8-week high intensity interval training on intima-media thickness of central and peripheral arteries in overweight men. Present research was quasi-experimental design. Subjects were 18 overweight men (mean BMI 27.9 ± 4.2 Kg/m2). Follow participant election, maximum oxygen consumption test was performed and they were randomly divided into two HIIT (n=12) and control (n=6) groups. Body composition (were evaluate by bio-impedance system), carotid and femoral intima-media thicknesses (FIMT) (were evaluate by ultrasonic system and B-Mode method), and VO2peak assessments were performed in pre- and post-test occasions. All data analysis were done by Two way ANOVA at p<0.05. Body fat percent of subjects were significantly decreased in HIIT group (p=0.041). Also, FIMT were significantly decreased in people with IMT less than 0.9 mm (p=0.026). The study illustrated that IMT of central and peripheral arteries subsequent of 8 weeks HIIT were decreased in overweight men. Also, it is probable that HIIT has an ability to decrease IMT only in overweight men with IMT less than 0.9 mm.

کلیدواژه‌ها [English]

  • Central and peripheral arteries
  • high intensity interval training
  • Intima-Media Thickness
  • overweight
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