اثر دویدن با الگوهای مختلف بر مقادیر نرخ بارگذاری، ایمپالس و گشتاور آزاد طی دویدن

نوع مقاله : مقاله پژوهشی

نویسندگان

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

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

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

4 گروه تربیت‌بدنی و علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ایران

5 گروه تربیت‌بدنی و علوم ورزشی، دانشکده علوم انسانی، دانشگاه آزاد اسلامی واحد همدان، همدان، ایران

چکیده

مقدمه و اهداف
سه نوع الگوی برخوردی پا وجود دارد که دونده­ها از این الگوها استفاده می­کنند که شامل الگوی پاشنه-پنجه، قسمت میانی پا-پاشنه و پنجه-پاشنه می­باشد. هدف پژوهش حاضر بررسی اثرات دویدن با الگوهای مختلف بر مقادیر نرخ بارگذاری، ایمپالس و گشتاور آزاد در سه بعد طی فاز اتکای دویدن می­باشد.
مواد و روش ­ها
در مطالعه کار­آزمایی و نیمه­تجربی حاضر، 13 مرد سالم (سن: 8/2±6/26 سال، وزن بدن: 2/7±4/78 کیلوگرم) داوطلب شدند. داده­های نیروی عکس­العمل زمین به­وسیله یک صفحه نیروی کیستلر (نرخ نمونه­برداری: 1000 هرتز) اندازه­گیری شد. از آزمون آنالیز واریانس دوسویه جهت تحلیل آماری در سطح معنا­داری 05/0 α=استفاده شد.
یافته ­ها
یافته ­های پژوهش حاضر نشان داد که میزان نیروی عکس ­العمل عمودی زمین طی فاز میانه اتکا دویدن پاشنه-پنجه بدون کفش نسبت به همین الگو در دویدن با کفش بیشتر بود. نیروی خارجی در فاز تماس پاشنه در دویدن پنجه-پاشنه نسبت به دویدن با الگوی پاشنه-پنجه کاهش معنا­داری را نشان داد. نرخ بارگذاری عمودی طی دویدن با کفش نسبت به بدون کفش در الگوی پاشنه-پنجه بزرگتر بود.
نتیجه­ گیری
با توجه به نتایح حاضر می­توان بیان نمود که الگوی دویدن پنجه-پاشنه میزان مولفه­ی خارجی و بنابراین میزان پرونیشن پا نسبت به الگوی پاشنه-پنجه کاهش پیدا نموده که می­تواند سبب کاهش ریسک آسیب گردد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of Running with Different Patterns on the Values of Loading Rates, Impulses, and Free Moment during Running

نویسندگان [English]

  • Arefeh Mokhtari Malek Abadi 1
  • Amiali Jaafarnejad 2
  • Milad Alipour Sarinasirlou 3
  • Elham Sorkheh 4
  • Mahdi Majlesi 5
1 Physical Education and Sports Science, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardebil, Ardebil Province, Iran
2 Assistant Professor of Sport Management, Department of Physical Education and Sport Sciences, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran
3 Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran
4 Department of Physical Education and Sport Sciences, Faculty of Educational Science and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
5 Department of Sport Biomechanics, Faculty of Humanities, Islamic Azad University, Hamedan Branch, Hamedan, Iran
چکیده [English]

Background and Aims: There are three types of footstrike patterns that runners use including rearfoot strike, mid- or forefoot strike. The aim of the present study was to investigate the effects of running with different patterns on loading rate, impulse, and free moment values in three dimensions during stance phase.
Materials and Methods: A total of 13 healthy men (age: 26.6±2.8 years; weight: 78.4±7.2 kg) were included in the present trial and semi-experimental study. Ground reaction force data was recorded using a Kistler force platform (sampling rate: 1000 Hz). Two-way ANOVA with a significance level of ɑ=0.05 was used for statistical analysis.
Results: The results of the current study showed that the vertical ground reaction force during the mid-stance phase of the rearfoot strike without shoe was more than that of the rearfoot strike with shoe. External force in the heel contact phase showed a significant decrease while running forefoot strike versus running with a rearfoot strike pattern. The vertical loading rate was higher when running with shoes compared to without shoe in the rearfoot strike pattern.
Conclusion: According to the results, it can be concluded that the rearfoot strike pattern has reduced the amount of external component and thus the amount of foot pronation relative to the forefoot strike pattern, which can reduce the risk of injury.

کلیدواژه‌ها [English]

  • Footstrike patterns
  • Rearfoot strike
  • Midfoot strike
  • Forefoot strike
  • Ground reaction force
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دوره 9، شماره 1
فروردین 1399
صفحه 123-136
  • تاریخ دریافت: 25 اسفند 1397
  • تاریخ بازنگری: 31 اردیبهشت 1398
  • تاریخ پذیرش: 31 خرداد 1398
  • تاریخ اولین انتشار: 01 فروردین 1399