مقایسه اثر شدت های مختلف دهیدراسیون بر قدرت ایزومتریک، توان بی هوازی و استقامت عضلانی زنان فعال

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس ارشد رشته فیزولوژی ورزش دانشکده تربیت بدنی و علوم ورزشی/ دانشگاه اصفهان

2 دانشیار رشته فیزیولوژی ورزش دانشکده تربیت بدنی و علوم ورزشی/ دانشگاه اصفهان

3 استادیار رشته فیزیولوژی ورزش دانشکده تربیت بدنی و علوم ورزشی/ دانشگاه اصفهان

4 استاد تمام رشته فیزیولوژی ورزش دانشکده تربیت بدنی و علوم ورزشی/ دانشگاه اصفهان

چکیده

زمینه و هدف: کم آبی ناشی از ورزش و گرما پدیده ای رایج در میان ورزشکاران است که می تواند عملکرد و حتی سلامتی ورزشکار را تحت تأثیر قرار دهد. هدف از پژوهش حاضر مقایسه اثرات کم آبی در شدت های متفاوت بر برخی عملکردهای فیزیولوژیکی و جسمانی زنان فعال بود. روش تحقیق: 10 نفر زن سالم فعال با میانگین سن: 6/24± 26/6 سال، قد: 5/20±163/20 سانتی متر، وزن 6/59±54/82 کیلوگرم و BMI 20/59 ±2/45 به صورت داوطلبانه در سه روز جداگانه در شدت های متفاوت یوهیدراسیون، دهیدراسیون خفیف و دهیدراسیون متوسط شرکت کردند. موقعیت دهیدراسیون با استفاده از ورزش و فشار گرمایی و کنترل مصرف مایعات ایجاد شد. توان بی هوازی، قدرت ایزومتریک و استقامت عضلانی اندام فوقانی و تحتانی در سه حالت اندازه گیری شد. به منظور تجزیه و تحلیل داده ها  از تحلیل واریانس با اندازه گیری مکرر استفاده گردید و سطح معنی داری 0/05>p در نظر گرفته شد. یافته ها: در حالت های دهیدراسیون خفیف و متوسط به ترتیب در توان بی هوازی کاهش معنی داری به میزان 7/37 درصد و 11/94 درصد، استقامت عضلانی اندام فوقانی 3/4 درصد و 17/44 درصد، استقامت عضلانی اندام تحتانی 2/66 درصد و 5/75 درصد، قدرت عضلانی اندام تحتانی 4 درصد و 11 درصد در مقایسه با یوهیدراسیون مشاهده شد. قدرت عضلانی اندام فوقانی در حالت دهیدراسیون متوسط 62/8 درصد نسبت به حالت یوهیدراسیون کاهش معنی داری را نشان داد. نتیجه گیری: به نظر می رسد عوامل جسمانی مثل توان بی هوازی، قدرت و استقامت عضلانی در شدت های خفیف نیز تحت تأثیر دهیدراسیون قرار گرفته و به صورت معنی داری کاهش می یابند.

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of the effect of different intensities of dehydration on isometric strength, anaerobic power and muscular endurance in active women

نویسندگان [English]

  • Mona Haghshenas 1
  • Fahimeh Esfarjani 2
  • Jalil Reisi 3
  • Sayed Mohamad Marandi 4
چکیده [English]

Background and Aim: Dehydration due to exercise and heat is a regular issue  among athletes that can affect an athlete's performance and even health. This study aimed to identify  the effects of different hydration intensity on some of physiological and physical functions  in active women. Materials and Methods: Ten healthy active women with an average age: 26.6 ± 6.24 years, Height: 163.20 ± 5.20 cm, weight 54.89 ± 6.59 kg and BMI 20. 59 ± 2.45 kg/m2 voluntarily participated in three separate days at different intensity euhydration , mild and moderate dehydration. Dehydration situation provided by exercise, heat stress and water consumption. Anaerobic power, upper and lower body muscular strength and endurance were measured in three conditions. To analyse the data the repeated measure variance were used and the significance level was considered at pResults: At mild and moderate dehydration situations significant reduction were observed as compare to euhydration situation including; in anaerobic power 7.37 per cent and 11.94 per cent, upper body muscular Endurance 3.4 per cent and 17.44 per cent, lower body muscular endurance 2.66 per cent and 5.75 per cent, lower body muscular strength 4 per cent and 11 per cent respectively. Upper body muscular strength in moderate dehydration as compared to euhydration situation also 8.62 per cent decreased. Conclusions: It seems that some physical factors such as anaerobic power, muscular strength and endurance, also in mild intensities may be significantly reduced by dehydration.

کلیدواژه‌ها [English]

  • Dehydration
  • Euhydration
  • Anaerobic power
  • Muscular strength
  • Muscular endurance

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