نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناس ارشد فیزیولوژی ورزشی/ گروه تربیت بدنی و علوم ورزشی، دانشکده علوم انسانی/ واحد رشت/ دانشگاه آزاد اسامی/ رشت
2 استادیار گروه تربیت بدنی و علوم ورزشی/ دانشکده علوم انسانی، واحد رشت/ دانشگاه آزاد اسلامی/، رشت
3 استاد گروه فیزیولوژی ورزشی/ دانشکده تربیت بدنی و علوم ورزشی/ دانشگاه گیلان/ رشت
چکیده
زمینه و هدف: هدف از پژوهش حاضر بررسی اثر مصرف کافئین بر قدرت و استقامت عضلانی بازیکنان فوتبال مرد آماتور بود. روش تحقیق: روش پژوهش از نوع نیمه تجربی و جامعه آماری آن کلیه باز کینان تیم های لیگ های فوتبال رده بزرگسالان شهرستان ساوه در سال 1391 بودند که از بین آن ها 48 نفر با میانگین شاخص توده بدنی 36/ 0±23/8 کیلوگرم/متر مربع، وزن 22/ 1± 1/ 76 کیلوگرم، قد 89/ 0± 5/ 178 سانتی متر، و سن 49/ 0± 8/ 24 سال، انتخاب شده و به روش تصادفی به دو گروه تجربی و کنترل تقسیم شدند. پس از اندازه گیری BMI شرکت کنندگان، ارزیابی قدرت با آزمون حداکثر یک تکرار بیشینه ( 1RM ) در حرکت پرس پا و ارزیابی استقامت عضلانی با آزمون تعداد تکرار در حرکت پرس پا با شدت 80 درصد 1RM صورت گرفت. 72 ساعت بعد، گروه تجربی مقدار 5 میلی گرم/ کیلوگرم وزن بدن کافئین و گروه کنترل دارونما (آرد) دریافت کردند. یک ساعت پس از مصرف مکمل، همان آزمون های قبلی تکرار شدند. با روش آماری t مستقل، اختاف های ایجاد شده در دو گروه مورد مقایسه قرار گرفت و سطح معنی داری 05/ p ˂0 در نظر گرفته شد. یافته ها: نتایج نشان داد که قدرت (p <0/0001) و استقامت عضلانی ( 04/ p< 0 ) در گروه تجربی به طور معنی داری افزایش یافته است؛ اما در گروه دارونما تغییر معنی داری ( 05/ p ˃0 ) مشاهده نشد. نتیجه گیری: یافته ها نشان می دهد که مصرف 5 میلی گرم/ کیلوگرم وزن بدن کافئین قدرت و استقامت عضلانی را در فوتبالیست های آماتور بهبود می بخشد.
کلیدواژه‌ها
عنوان مقاله [English]
The effect of caffeine consumption on muscular strength and endurance in amateur male soccer players
نویسندگان [English]
- Hojjat Forati 1
- Zahra Hojjati 2
- Farhad Rahmani-Nia 3
1
2
3
چکیده [English]
Background and Aim: The purpose of this study was to investigate the effect of caffeine on muscle strength and endurance in amateur soccer players. Materials and Methods: The research method was quasi-experimental and population research was selected of soccer players leagues of Saveh in 2012. Forty eight athletes were selected (mean BMI= 23.8 ± 0.36 kg/m2, weight= 76.1 ± 1.22 kg, height= 178.5 ± 0.89 cm and age= 24.8 ± 0.49 yr.) and randomly divided into two experimental and control groups. After measuring body mass index, the muscle strength and endurance also were evaluated with one-repetition maximum (1RM) test in leg press and 80% 1RM repetitions, respectively. 72 hours later, the experimental and control groups consumed caffeine (5 mg/kg) and placebo (Flour) respectively. The same measurements of pre-test session were repeated one hour after supplement consuming. Independent t-test was used to compare the differences between groups and significance level was set as p˂0.05. Results: The results showed that there was significant increase in strength (p<0.0001) and endurance (p<0.04) in the caffeine group; but there were no any significant changes in placebo individuals (p˃0.05). Conclusion: Findings show that consumption of 5 mg/kg caffeine significantly improved muscular strength and endurance in the amateur soccer players.
کلیدواژه‌ها [English]
- Caffeine
- Strength
- Muscular endurance
- Soccer players
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