ورزش و علوم زیست حرکتی

ورزش و علوم زیست حرکتی

اثر روش‌های مختلف تقویت پس از فعال‌سازی با و بدون مصرف کافئین بر عملکرد جودوکاران رقابتی

نویسندگان
1 دانشگاه آزاد اسلامی ساری
2 دانشگاه ازاد اسلامی
چکیده
مقدمه و هدف: تقویت پس از فعالسازی پدیده‌ای است که به وسیله آن عملکرد عضلانی در پاسخ به یک محرک آماده‌سازی افزایش می‌یابد. هدف از پژوهش حاضر، مقایسه اثر تقویت پس از فعالسازی با تمرین پلایومتریک مقاومتی، معمولی و شتابی با و بدون مصرف کافئین بر عملکرد جودوکاران رقابتی بود.
مواد و روش­ ها: در یک مطالعه متقاطع ، 9 جودوکار مرد بطور داوطلبانه شرکت کردند. هر آزمودنی در چهار جلسه مجزا و بصورت تصادفی دو آزمون ویژه جودو را با فاصله 90 ثانیه از هم در چهار وضعیت: تقویت پس فعالسازی با پلایومتریک معمولی + آزمون ویژه جودو، تقویت پس فعالسازی با پلایومتریک مقاومتی + آزمون ویژه جودو، تقویت پس فعالسازی با پلایومتریک شتابی + آزمون ویژه جودو و گرم کردن معمولی + آزمون ویژه جودو را اجرا کرد. برای بررسی اثر کافئین، 10 روز بعد از آخرین جلسه، آزمودنی‌ها بصورت متقاطع یکی از چهار مداخله: کافئین + تقویت پس فعالسازی + آزمون جودو، تقویت پس فعالسازی + آزمون جودو، کافئین + آزمون جودو و پلاسبو + آزمون جودو را اجرا کردند. کافئین (6 میلی­ گرم برای هر کیلوگرم وزن بدن) 60 دقیقه و تقویت پس از فعالسازی (سه ست شش تکراری اسکات پرشی) 5 دقیقه قبل از آزمون جودو انجام شد. خونگری بعد از آزمون جودو دوم گرفته شد. برای تجزیه و تحلیل آماری از روش آنالیز واریانس با اندازه‌های تکراری و آزمون تعقیبی بنفرونی و سطح معناداری 0.05≥P استفاده شد.
یافته­ ها: نتایج تفاوت معنی‌داری بین روش های مختلف تقویت با یکدیگر و با گروه کنترل در تعداد تکنیک های اجرا شده و شاخص آزمون جودو نشان نداد. کافئین و کافئین + تقویت منجر به افزایش معنی‌دار تعداد تکنیک­ های اجرا شده و لاکتات خون نسبت به تقویت و پلاسبو شد (0.05≥P < span lang="AR-SA">).
بحث و نتیجه­ گیری: بر اساس نتایج تحقیق، استفاده از روش­های مختلف تمرین پلایومتریک برای تقویت پس ­فعالی اثری بر آزمون ویژه جودو ندارد ولی اثر ترکیبی کافئین و تقویت پس از فعالسازی شتابی در بهبود عملکرد جودو موثرتر است.
کلیدواژه‌ها

عنوان مقاله English

The effect of different post activation potentiation methods with and without caffeine ingestion on competitive judokas performance

نویسندگان English

Amin Farzaneh hesari 1
Ali Shiraghaee 2
چکیده English

Introduction and purpose: Post-activation potentiation (PAP) is the phenomenon by which muscular performance is enhanced in response to a conditioning stimulus. The purpose of this study was to compare the effects of PAP induced by resisted, accelerated and traditional plyometric with and without caffeine ingestion on competitive judokas performance.
Materials and Methods: In a randomized, crossover design, 9 male judokas participated in this study and performed two special judo fitness test (SJFT) with 90 second between trials in four conditions: PAP with traditional plyometric+ SJFT, PAP with accelerated plyometric+ SJFT, PAP with resisted plyometric+ SJFT and warm up+ SJFT. To evaluate the effect of caffeine, 10 days after the last PAP session, the subjects participated in four conditions randomly: caffeine + PAP + SJFT, PAP + SJFT, caffeine + SJFT and placebo+SJFT. Caffeine (6 mg/kg) was administered 60 minutes and PAP (3 sets x 6 repetitions of jumping alternating lunges) was performed 5 min before the SJFT. Blood sample was taken after SJFT2. To analyze the data One-way repeated measures ANOVA and Bonferroni post-hoc test and significant level at P≤0.05 was used.
Results: Results showed no significant difference in total throws and index of SJFT between PAP conditions. Caffeine and caffeine + PAP resulted in significant increase in total throws of SJFT and blood lactate than PAP and placebo (P≤0.05).
Discussion and Conclusion: It seems that PAP with different plyometric methods can’t improve SJFT, but caffeine combined with accelerated PAP can be more effective to improve judo performance.

کلیدواژه‌ها English

Post activation potentiation
Caffeine
Judo
Sport performance
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دوره 11، شماره 21 - شماره پیاپی 21
بهار و تابستان
شهریور 1398
صفحه 12-21

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