مقایسه طیف فرکانس نیروهای عکس‌العمل زمین و الکترومایوگرافی در کودکان سالم و فلج مغزی طی راه رفتن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ‏ایران

2 مربی تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه آزاد اسلامی واحد یاسوج، ایران

3 کارشناس ارشد فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، ‏اردبیل، ایران ‏

4 کارشناسی ارشد بیومکانیک ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، ‏اردبیل، ایران ‏

5 دانشجوی دکتری فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشگاه آزاد اسلامی واحد تبریز، تبریز، ایران

چکیده

هدف:
هدف از پژوهش حاضر مقایسه طیف فرکانس نیروهای عکس ­العمل زمین و الکترومایوگرافی در کودکان سالم و فلج مغزی طی راه رفتن بود.
روش­ بررسی:
پژوهش حاضر از نوع نیمه تجربی بود. نمونه آماری شامل  12 پسر دارای فلج مغزی و 12 پسر سالم با دامنه سنی 6-10 سال بود. از صفحه نیرو (Kistler) برای ثبت نیروهای عکس ­العمل زمین طی راه رفتن استفاده شد. همچنین از یک سیستم الکترومایوگرافی بدون سیم با 8 جفت الکترود سطحی دو قطبی برای ثبت فعالیت الکتریکی عضلات اندام تحتانی طی راه رفتن استفاده شد.
یافته ­ها:
نتایج نشان داد که میزان فرکانس با توان 99/5 درصد و تعداد هارمونی­های ضروری در راستای قدامی- خلفی در گروه فلج مغزی در مقایسه با گروه سالم به ترتیب 41/58 و 32/83 درصد بیشتر بود. میزان فرکانس با توان 99/5 درصد در راستای عمودی در گروه فلج مغزی در مقایسه با گروه سالم حدود 40/94 درصد بیشتر بود. همچنین میزان فرکانس با توان 99/5 درصد در مولفه گشتاور آزاد در ﮔﺮوه فلج مغزی در مقایسه با گروه سالم حدود 27/57 درصد بیشتر بود. میانه فرکانس عضله درشت ­نئی قدامی، دوقلو داخلی، دوسر رانی و سرینی میانی در گروه فلج مغزی در مقایسه با گروه سالم به ترتیب 31/67، 19/63، 21/96 و 26/70 درصد کمتر بود.
نتیجه­ گیری:
نتایج نشان داد میانه فرکانس عضلات اندام تحتانی در کودکان فلج مغزی کمتر از کودکان سالم بود. می ­توان بیان کرد محتوای طیف فرکانس نیروهای عکس ­العمل زمین و الکترومایوگرافی ارزش کلینیکی دارد. لذا استفاده از مداخلات درمانی در جهت بهبود شاخص­ های طیف فرکانس نیروهای عکس ­العمل زمین و الکترومایوگرافی در کودکان فلج مغزی پیشنهاد می ­گردد.

کلیدواژه‌ها

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فصلنامه علمی- پژوهشی علوم پیراپزشکی وتوانبخشی
دوره 10، شماره 2
شهریور 1400
صفحه 83-96

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