تاثیر کفی طبی بر فعالیت الکترومیوگرافی عضلات مچ پا در ورزشکاران دارای کف پای صاف حین پرش- فرود تک پا

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس‌ارشد، گروه حرکات اصلاحی و آسیب‌شناسی ورزشی، دانشکدۀ تربیت بدنی، دانشگاه تهران، تهران، ایران

2 دانشیار، گروه حرکات اصلاحی و آسیب شناسی ورزشی، دانشکده تربیت بدنی، دانشگاه تهران، تهران، ایران

چکیده

کف پای صاف اثر خود را به شکل زنجیره ای به مفاصل و سگمان های فوقانی انتقال می دهد و منجر به اختلال در زنجیره حرکتی می شود. هدف از تحقیق حاضر، بررسی اثر کفی طبی بر فعالیت الکترومیوگرافی عضلات اطراف مفصل مچ پای ورزشکاران دارای کف پای صاف حین انجام حرکت پرش فرود تک پا بود. در تحقیق حاضر تعداد ۱۵ ورزشکار دارای ناهنجاری کف پای صاف ۱۸ تا ۲۳ سال به صورت هدفمند به عنوان نمونه آماری این تحقیق انتخاب شدند. فعالیت الکترومیوگرافی از چهار عضله (تیبیالیس قدامی، پرونئوس لانگوس، گاستروکنمیوس داخلی و سولئوس) حین حرکت پرش- فرود تک پا در دو وضعیت با و بدون کفی به ثبت رسید. نتایج آزمون‌های آماری نشان داد بین فعالیت عضلات تیبیالیس قدامی (۰/۰۰۲=p) و پرونئوس لانگوس (۰/۰۴۵=p) در مرحله فیدفورواردی و بین فعالیت عضلات تیبیالیس قدامی (۰/۰۴۹=p)، پرونئوس لانگوس (۰/۰۴۲=p)، گاستروکنمیوس داخلی (۰/۰۱۵=p ) و سولئوس (۰/۰۰۵=p) در مرحله فیدبکی، در دو وضعیت با و بدون کفی طبی تفاوت معنا‌داری وجود دارد. کفی طبی با تغییر در عملکرد عصبی- عضلانی عضلات تیبیالیس قدامی، پرونئوس لانگوس، گاستروکنمیوس داخلی و سولئوس می تواند خطر بروز آسیب و اختلالات زنجیره حرکتی را کاهش دهد.

کلیدواژه‌ها


عنوان مقاله [English]

The Effecte of foot orthosis on electromyographic activity of ankle muscles in athletes with flat foot during single leg jump landing

نویسندگان [English]

  • Mohammad Reza Badihiyan 1
  • Hooman Minoonejad 2
  • Foad Seidi 2
1 MSc, Department of Corrective Exercises and Sport Injury, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
2 Associate Professor, Department of Corrective Exercises and Sport Injury, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
چکیده [English]

Flat foot transfers a chain effect on the joints and upper segments and leads to disruption of kinetic chain.. Researches suggest that the use of foot orthoses may change muscle activation patterns of people with flat foot during walking and running activities to people with normal-arched feet but to date there are not studies on the effect of foot orthoses in neuromuscular control of athletes with flat foot deformity in sport tasks. The aim of this study was to compare EMG activity of muscles around the ankle joint in athletes with flat foot in the foot orthoses compared to the situation without foot orthoses, while single-leg jump-landing task is done. In this study of 15 athletes with flat foot deformity 18 to 23 years were selected purposively as the sample. EMG activity of four muscles (tibialis anterior, peroneus longus, medial gastrocnemius and soleus) during single leg jump-landing was registered in two situation with and without foot orthoses. The results showed significant differences in the feedforward activity of the tibialis anterior muscle (p = 0/002) and peroneus longus (p = 0/045) and in the feedback activity of the tibialis anterior muscle (p = 0/049), peroneus longus (p = 0/042), medial gastrocnemius (p = 0/015) and soleus (p = 0/005) between tow situations with and without the foot orthoses. Foot orthoses with changes in neuromuscular function of tibialis anterior, peroneus longus, medial gastrocnemius and soleus muscles may reduce the risk of injuries and disorders of the kinetic chain.

کلیدواژه‌ها [English]

  • Ankle muscles
  • Electromyographic activiicty
  • Foot orthosis
  • Flat foot
  • Single leg jump-landing
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