نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه حکیم سبزواری / دانشکده تربیت بدنی و علوم ورزشی
چکیده
زمینهوهدف: با وجود آن که کافئین به عنوان یک مکمل تحریک کننده روانی به طور گسترده توسط ورزشکاران استفاده می شود؛ اما اثربخشی مصرف آن در دوره های مختلف تمرینی و انواع ورزش ها، به خوبی مشخص نیست. هدف تحقیق حاضر، بررسی اثر مکمل کافئین بر برخی شاخص های مهارتی و آمادگی حرکتی بازیکنان زبده تنیس روی میز شهرستان سبزوار بود. روشتحقیق: 14 بازیکن مرد تنیس روی میز (با میانگین سنی 6/ 11 ± 29 سال، قد 79 / 7± 175 سانتی متر و وزن 26 / 15 ± 07 / 77 کیلوگرم) به طور داوطلبانه در تحقیق شرکت کردند. طرح تحقیق به صورت متقاطع و به گونه ای طراحی شد که آزمودنی ها سه مرتبه با فاصله یک شبانه روز از یکدیگر در یکی از سه حالت کنترل، مصرف مکمل کافئین (5 میلی گرم به ازای هر کیلوگرم وزن بدن) و مصرف دارونما (پودر نشاسته به صورت کپسول) قرار گرفتند. در هر جلسه آزمودنی ها به ترتیب آزمون های مهارتی فورهند، بک هند، سرویس و در نهایت، آزمون چابکی و زمان عکس العمل را اجرا کردند. داده ها با استفاده از آزمون تحلیل واریانس با اندازه گیری مکرر و آزمون تعقیبی بونفرونی تحلیل شدند و سطح معنی داری 05/p<0 در نظر گرفته شد. یافتهها: نتایج نشان داد که مصرف کافئین اثر معنی داری بر نتایج آزمو نهای مهارتی فورهند، بک هند، سرویس تنیس روی میز و همچنین آزمو نهای چابکی و زمان عکس العمل (به نور و صدا) بازیکنان ندارد (05/p>0). نتیجهگیری: مصرف 5 میلی گرم کافئین به ازاء هر کیلوگرم وزن بدن، بر بهبود شاخص های مهارتی و آمادگی حرکتی بازیکنان زبده تنیس روی میز تاثیر ندارد.
کلیدواژه‌ها
عنوان مقاله [English]
The effect of caffeine consumption on some skill indicators and motor fitness of elite table tennis players
نویسندگان [English]
- Amir Hossein Haghighi
- Ali Zaferanieh
- Seyed Alireza Hosseini Kakhk
چکیده [English]
Background and Aim: The caffeine, as a psychoactive supplement, is widely used by the athletes, however the effectiveness of its consumption in different periods of training and sports was not understood. The purpose of present study was to determine the effect of caffeine consumption on some skill indicators and motor fitness in elite table tennis players of Sabzevar. Materials and Methods: Fourteen male elite table tennis players (mean age 29±11.6 years, height 175±7.79 cm and weight 77.07±15.26 kg) volunteered for the research. The study design was crossover, in which the subjects placed in 3 different conditions of control (Con), caffeine consumption [(C), 5 mg/kg], and placebo consumption (Starch powder as capsule), with a period of one day between the conditions. In each session, subjects performed forehand, backhand, and service techniques, and also agility and reaction time tests. The data were analyzed by the ANOVA repeated measures and Bonferoni post-hoc tests and the level of statistical significance was set at p<0.05. Results: The results showed that caffeine consumption had no significant effect on the physical fitness and skill indicators (p>0.05). Conclusion: Consumption of 5 mg/kg caffeine has no effect on improvement of skill indicators and motor
fitness of elite table tennis players.
کلیدواژه‌ها [English]
- Caffeine
- Table tennis
- Skill indicators
- Motor fitness
- Elite players
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