مقایسه استراتژی‌های کنترل حرکتی با استفاده از توان مفاصل اندام تحتانی در مراحل مختلف فرود تک-پا در ورزشکاران دارای کف پای صاف و سالم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه تربیت بدنی، دانشگاه آزاد اسلامی واحد بندرانزلی، بندر انزلی، ایران

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

3 استادیار بیومکانیک ورزشی، دانشگاه خوارزمی، تهران،ایران

4 استادیار بیومکانیک ورزشی، بخش علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه شیراز، شیراز، ایران

چکیده

مقدمه و اهداف
دانش تغییرات استراتژی‌های کنترل حرکتی در هنگام فرود، بینش خوبی برای پیشگیری از بروز آسیب‌های زانو در افراد دارای کف پای صاف خواهد داد؛ لذا هدف تحقیق حاضر، مقایسه استراتژی‌های کنترل حرکتی با استفاده از توان مفاصل اندام تحتانی در مراحل مختلف فرود تک­پا در ورزشکاران دارای کف پای صاف و سالم بود.
مواد و روش‌ها
در تحقیق حاضر، از میان ورزشکاران مرد فوتسالیست، 10 نفر دارای کف پای صاف و 10 نفر دارای کف پای نرمال به­صورت تصادفی ساده انتخاب شدند. اندازه توان مفاصل اندام تحتانی در سه صفحه حرکتی بر اساس داده‌های کینماتیکی و کینتیکی به­دست­آمده از دستگاه تحلیل حرکتی و صفحه نیرو ثبت گردید و تجزیه­و­تحلیل داده­ها با استفاده از نرم­افزار متلب و SPSS و با روش آماری تی مستقل انجام شد (p <0/05).
یافته‌ها
نتایج تحقیق حاضر نشان داد که تفاوت معناداری بین دو گروه در اندازه توان مفصل زانو (0/003=)p در صفحه ساجیتال در مرحله تماس اولیه، توان مفصل زانو در صفحه ساجیتال (0/0001=p) و ران (0/05=p) در صفحه هوریزنتال در مرحله اوج خم شدن زانو و توان مفصل ران (0/022=p) در صفحه ساجیتال در مرحله اوج نیروی عکس­العمل زمین دیده شد، اما تفاوت معناداری بین دو گروه در اندازه توان مفاصل در دیگر مراحل و صفحات در مفاصل دیده نشد.
نتیجه ­گیری
نتایج پژوهش حاضر نشان می­دهد که در سه مرحله مورد بررسی در صفحه ساجیتال در زانو و ران اختلاف معنادار شد که نشان می‌دهد در افراد کف پای صاف، مفاصل پایینتر با عدم کارآیی خود ضربه را به مفاصل بالاتر انتقال می‌دهند که این خود می­تواند عامل مهم ی جهت بروز آسیب در پا و اندام­ های بالاتر در این افراد شود. نتایج این تحقیق می­تواند در برنامه ­ریزی موفق­تر اقدامات توانبخشی و حرکتی افراد مبتلا به کف پای صاف مؤثر واقع شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Comparison of Single-Leg Drop Landing Motor Control Strategies from Biomechanical Data between Young Athletes with Normal and Flatfeet

نویسندگان [English]

  • Omid Rajaeian 1
  • Mehdi Khaleghi Tazji 2
  • Ali Abbasi 3
  • Fereshteh Eftekhari 4
1 Physical Education, Islamic University of Bandar Anzali, Anzali, Iran
2 Assistant Professor of Faculty of Physical Education and Sport Sciences, Kharazmi University, Teheran, Iran
3 Assistant Professor Department of Biomechanic and Sport Injury/ School of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
4 Sport biomechanics, Department of Sport Sciences, School of education and psychology, Shiraz University, Shiraz, Iran
چکیده [English]

Background and Aims: Knowing the changes of motor control strategies during landing provide well understanding to preventing knee injuries in people with flatfeet. Hence, the purpose of the present study was to compare the motor control strategies using lower limb joints power in different phases of single leg drop landing between athletes with flatfeet and normal foot.
Materials and Methods: A total of 10 individuals were randomly selected from among athletes with flatfeet and 10 were randomly selected from among athletes with normal foot. Lower limb joints power in three motion plates was recorded according to data from kinematic and kinetic motion analysis and force plate. Data was analyzed using Matlab and SPSS softwares and running independent t-test (p < 0/05).
Results: There was a significant difference in knee power in sagital plane )P=0/003( in initial contact phase )IC(, knee power in sajital plane )P=0/0001(, and Thigh power in horizontal plane )P=0/05( in pick of knee flexion, Thigh power in sagital plane )P=0/022( in pick of ground reaction force between flat foot and a normal foot. However, there was no significant difference in joints in the other phases and plates between the two groups.
Conclusion: The results of our study study showed that significant differences were observed in Knee and Hip powers in sagital plane in three phases, which shows the impact transfere to the upper joints from incapability in lower joints in flatfeet people. This could be a major factor for foot injuries in the individuals with flat foot. The results of the current study can help better organizing a rehabilitation program and activities for those with flatfeet.

کلیدواژه‌ها [English]

  • joint power
  • Flatfoot
  • single-leg drop landing
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