نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی مقطع دکتری، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران.
2 استادیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران.
3 دانشیار دانشگاه آزاد اسلامی واحد خوراسگان (اصفهان).
4 استادیار گروه ارتوپد فنی دانشکدۀ علوم توانبخشی دانشگاه علوم پزشکی و خدمات بهداشتی درمانی اصفهان
چکیده
هدف از پژوهش حاضر، مقایسۀ تمرین در یادگیری حرکات هماهنگ درون‌مرحلهو برون‌مرحلۀدست و پا میباشد. بدینمنظور، 12 دانشجوی دختر از دانشگاه فرهنگیان اصفهان (با میانگین سنی 5±22 سال) که هیچگونه سابقۀ فعالیت در رشته‌های ورزشی ریتمیک نداشتند، بهصورت تصادفی طبقه‌ای انتخاب شدند و بهمدت شش ماه تحتنظر مربی هیپ‌هاپ آموزش دیدند و مهارتهای مختلف هیپ‌هاپ و درخلال آن، تکالیف مدنظر پژوهش را آموخته و تمرین کردند. شرکتکنندگان در طول این شش ماه، سه بار به فاصلههای یک، سه و شش ماه، در آزمایشگاه حضور یافتند که هر حضور بهمنزلۀ یک سطح مهارتی در نظر گرفته شد و هر مرتبه با استفاده از دستگاه تجزیهوتحلیل حرکت، از اجرای چهار تکلیف ورزشی درون‌مرحله و برون‌مرحلۀ منتخب با هفت دوربین با فرکانس 60 هرتز بهصورت سهبعدی فیلمبرداری شد. شایانذکر است که داده‌های حاصل به کمک برنامهنویسی در نرم‌افزار مت‌لب، پردازش شده و خطای متغیر اجرای شرکتکنندگان محاسبه گشت. سپس، با استفاده از آزمون تحلیل واریانس، اندازهگیریهای مکرر در سطح (P=0/005) تجزیهوتحلیل گردید. نتایج نشان میدهد که تفاوت معناداری بین خطای متغیر اجرا در سطوح مهارتی وجود دارد و حرکات هماهنگ در هر سطح، استوارتر از سطح قبل اجرا میشود. بررسی اثر تعاملی الگو، سطح و اندام نیز بیانگر آن است که در تمام سطوح و هر دو اندام، خطای متغیر الگوی برون‌مرحله بهصورت معناداری بیشتر از خطای متغیر الگوی درون‌مرحله میباشد. درمجموع، یافتهها حاکی از آن است که تمرین، اجرای الگوهای حرکت درون‌مرحله و برون‌مرحله را در دستها و پاها به یک نسبت بهبود میبخشد.
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
Comparing Exercise Effects Regarding Learning In-Phase and Anti-Phase Movement Coordination in Arm and Legs
نویسندگان [English]
- Negar Arazeshi 1
- Abdollah Ghasemi 2
- Mahdi Namazi Zade 3
- Ebrahim Sadeghi Demne 4
1 PhD Candidare at Science and Research Branch, Islamic Azad University, Tehran, Iran.
2 Assistant Professor at Science and Research Branch, Islamic Azad University, Tehran, Iran
3 Associate Professor at Khorasgan Branch, Islamic Azad University, Isfahan. Iran.
چکیده [English]
The purpose of the following research was to compare the training effects on in-phase and anti-phase coordinated movements with arms and legs. Twelve female students of the Farhangian University of Isfahan (aged 22 ± 5 y) were randomly selected without any background in rhythmic sports and underwent a six-month training under supervision of a hip-hop instructor to learn and practice hip hop along with the specific tasks of the research. The participants reported to lab at first, third, and sixth months, each considered as a level of skill. Using motion analyzer, performance of four chosen exercises of in-phase and anti-phase were filmed by seven cameras. All the data were processed by programming, using MATLAB and the variable error of the participants were calculated. Afterwards, ANOVA with repeated measures was used for data analysis at significance level of P=0.05. The results indicated significant difference in variable error of performance between different levels of skills, with coordinated moves at each level being executed more firmly compared with lower levels. Study of interactive effect of the pattern, levels, and limbs showed that the variable error of anti-phase movement was more significant than that of in-phase movement in each level and both limbs. Overall, the results proved that training improves the in-phase and anti-phase movement model performance in hands and legs at the same level.
کلیدواژه‌ها [English]
- Hip Hop
- In Phase Movement Pattern
- Anti-Phase Movement Pattern
- Level of Skill
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