مقایسه تأثیر یک دوره تمرین تناوبی شدید در شرایط هایپوکسی بر عملکرد هوازی

نوع مقاله : علمی - پژوهشی

نویسندگان

1 داﻧﺸﮕﺎه ﺷﻬﯿﺪ ﺑﻬﺸﺘﯽ ﺗﻬﺮان

2 داﻧﺸﮕﺎه ﺧﻮارزﻣﯽ

چکیده

هدف: پژوهش حاضر مقایسه تأثیر یک دوره تمرین تناوبی شدید در شرایط هایپوکسی و نورموکسی بر عملکرد هوازی بود. بدین منظور 16 نفر از دانشجویان مرد با میانگین سن 94/2±27/23سال ، قد 86/5±13/178 سانتی متر، وزن87/7±06/74 کیلوگرم،درصد چربی بدنی70/3±33/19 و BMI 74/2± 37/23 به طور داوطلب در این مطالعه شرکت کردند. آزمودنی­ها بر اساس توان بیشینه (Wmax) به دو گروه همگن هشت نفره، تقسیم و در شرایط هایپوکسی(3300 متر) و نورموکسی به تمرین پرداختند. ابتدا پس از اندازه گیری شاخص‌های ترکیب بدن ، Vo2max و Wmax با یک آزمون فزاینده در شرایط هایپوکسی و نورموکسی با فاصله 48 ساعت از یکدیگر اندازه­گیری شد. برنامه تمرین ورزشی بر روی چرخ کار سنج، برای هر دو گروه از نظر شدت (یک دقیقه با شدت80%-85%Wmax و دو دقیقه با شدت 50% Wmax) و مدت تمرین (30 دقیقه ) یکسان سازی شده بود. بعد از 2 هفته متغیرهای اندازه­گیری شده در پیش آزمون مجدداً مورد اندازه‌گیری قرار گرفت. این تحقیق از نوع نیمه تجربی و کاربردی بود.  نتایج: نتایج این پژوهش نشان داد فاکتورهای هوازی در هر دو گروه بهبود یافته، اما بین 12 جلسه تمرین مستمر شدید در شرایط هایپوکسی و نورموکسی بر عملکرد هوازی مردان ورزشکار( 05/0≥ α ) تفاوت معنی داری وجود نداشت. در نتیجه می توان بیان کرد، دوره تمرینی به کار گرفته شده در این پژوهش  باعث بهبود در عملکرد هوازی شد. اما مدت و شدت هایپوکسی به کار گرفته شده به اندازه­ای نبوده که بتواند به طور معنی‌داری عملکرد ­هوازی را در گروه هایپوکسی نسبت به گروه نورموکسی بهبود بخشد.

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