اثر زانوی پرانتزی بر کینتیک دویدن در بازیکنان نخبه فوتبال در شرایط پیش‌بینی شده و پیش‌بینی نشده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری بیومکانیک ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه خوارزمی تهران، تهران، ایران

2 استادیار گروه بیومکانیک ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه خوارزمی تهران، تهران، ایران

3 استادیار گروه بیومکانیک ورزشی، پژوهشگاه تربیت بدنی و علوم ورزشی ایران‏

چکیده

هدف:
از آنجا که تغییر در راستای بدن می­ تواند موجب اختلال در مهارت­ های حرکتی شود، هدف پژوهش حاضر بررسی اثر زانوی پرانتزی بر کینتیک دویدن در بازیکنان نخبه فوتبال در شرایط پیش ­بینی ­شده و پیش ­بینی ­نشده بود.
روش بررسی:
در این مطالعه نیمه ­آزمایشی 30 فوتبالیست مرد جوان در دو گروه مساوی زانو پزانتزی و نرمال به عنوان آزمودنی مشارکت داشتند. داده­ های نیروی عکس ­العمل زمین حین دویدن در شرایط پیش ­بینی ­شده و پیش ­بینی ­نشده با استفاده از دو صفحه نیرو جمع­ آوری شد.
یافته ­ها:
نتایج نشان داد نیروی عمودی عکس ­العمل زمین و نرخ بارگذاری عمودی در هر دو وضعیت پیش ­بینی ­شده و پیش ­بینی­ن شده به طور معناداری در گروه زانو پرانتزی بیشتر از گروه نرمال بود (0/05≥p). همچنین زمان رسیدن به اوج نیروی عمودی عکس ­العمل زمین در وضعیت پیش ­بینی ­نشده به طور معناداری از وضعیت پیش­ بینی ­شده بیشتر بود (0/05≤p). اختلاف معناداری بین گروه ­های زانو پرانتری و نرمال و وضعیت ­های پیش­ بینی ­شده و پیش ­بینی ­نشده در متغیرهای نیروی قدامی-خلفی و داخلی- خارجی عکس ­العمل زمین، زمان رسیدن به اوج نیروی قدامی- خلفی، ضربه پیشروی و زمان استقرار دویدن مشاهده نشد (0/05<p).
نتیجه­ گیری:
با توجه به نتایج، به نظر می ­رسد کینتیک دویدن در بازیکنان فوتبال می ­تواند تحت تاثیر زانوی پرانتزی و پیش ­بینی حرکت قرار گیرد.

کلیدواژه‌ها

موضوعات


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