مقایسه فعالیت الکترومیوگرافی عضلات زانو در زنان ورزشکار دارای ناهنجاری های کف پا حین پرش-فرود تک‌پا

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه آسیب‌شناسی ورزشی و حرکات اصلاحی، گروه حرکات اصلاحی و طب ورزش، دانشکده تربیت بدنی، دانشگاه علامه طباطبایی، تهران، ایران

2 دانشیار طب ورزش، گروه بهداشت و طب ورزش، دانشکده تربیت بدنی و علوم ورزشی، تهران، ایران

3 کارشناس ارشد آسیب‌شناسی ورزشی و حرکات اصلاحی، گروه حرکات اصلاحی و طب ورزش، دانشکده تربیت بدنی، دانشگاه علامه طباطبایی، تهران، ایران

چکیده

مقدمه و اهداف
امروزه پرونیشن و سوپینیشن بیش‌ از حد مچ پا می‌تواند عملکرد بیومکانیکی و عصبی-عضلانی اندام تحتانی را تغییر دهد. هدف از انجام پژوهش حاضر بررسی میزان فعالیت الکترومیوگرافی عضلات چهارسررانی و همسترینگ حین پرش-فرود تک­پا در افراد دارای کف ‌پای صاف، گود و طبیعی می‌باشد.
مواد و روش ­ها
در مطالعه مقطعی حاضر، 30 زن با کف ‌پای سالم، کف ‌پای گود و دارای کف ‌پای صاف در محدوده سنی 20-30 سال انتخاب شدند. میزان قوس کف ‌پا توسط شاخص افتادگی استخوان ناوی اندازه‌گیری شد و سپس میزان فعالیت الکترومیوگرافی عضلات مورد نظر با استفاده از سیستم الکترومیوگرافی سطحی 16 کاناله ساخت شرکت بایامد حین پرش-فرود تک‌پا، سنجیده شد. از آزمون تحلیل واریانس یک­طرفه برای تحلیل داده­ها استفاده شد. سطح معناداری 95 درصد(05/0=α) در نظر گرفته شد.
یافته ­ها
یافته­ ها نشان داد میزان فعالیت فیدفورواردی عضلات وستوس لترالیس (018/0₌p)، رکتوس فموریس (026/0₌p) بین دو گروه کف پای صاف و گود و نیز میزان فعالیت فیدبکی عضلات رکتوس فموریس (018/0₌p)، بایسپس فموریس (046/0₌p) و سمی تندینوس (048/0₌p) بین دو گروه کف ‌پای سالم و گود و بایسپس فموریس (048/0₌p) و سمی تندینوس (02/0₌p) بین دو گروه کف ‌پای صاف و گود دارای اختلاف معناداری بود.
نتیجه ­گیری
به نظر می‌رسد ناهنجاری‌ کف پای گود و صاف ممکن است با تغییر الگوی فعالیت عضلات ثبات­دهنده زانو همراه ‌باشد و ممکن است احتمال آسیب­دیدگی زانو را افزایش دهد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Comparison of Electromyographic Activity of Knee Muscles in Women with Foot Deformities during Single Leg Jump-Landing

نویسندگان [English]

  • Farideh Babakhani 1
  • Rahman Sheikhhoseini 1
  • Hooman Minoonejad 2
  • Monireh Moosavi 3
1 Assistant Professor, Department of Sports Injury and Corrective Exercises, Allameh Tabatabai University. Tehran, Iran
2 Department of Corrective Exercises and Sport Injury, University of Tehran, Tehran, Iran.
3 MA student in Sport Injury and Corrective Exercises, Allameh Tabataba'i University, Tehran, Iran
چکیده [English]

Background and Aim: Hyper pronation/supination may change biomechanical and neuromuscular function of the lower extremities. The purpose of the present research was studying the Electromyographic activity of Quadriceps and Hamstring muscles during single leg jump-landing in people with high, flat or normal foot arches.
Materials and Methods: In the current cross-sectional study, 30 girls, aged 20-30 years old, with normal arch, high arch, and flat foot were recruited. The foot arch was measured using Navicular drop index, and then the amount of Electromyography activity of considered muscle was measured using wireless EMG (16 channels, Bayamed company) during single-leg jump landing. One-way ANOVA test was run to analyze the data with the significance level set at 95% (α=0.05).
Results: There were significant differences in feedforward activity of Vastus lateralis (P=0.018) and Rectus femoris (P=0.026) between groups with high arch and flat feet, and significant differences in feedback activity of Rectus femoris (P-0.018), Biceps femoris (P=0.046), and Semitendinosis (P=0.048) between groups with healthy and high arch feet, as well Biceps femoris (P=0.048) and Semotendinosis (P=0.02) between groups with high arch and flat feet.
Conclusion: According to the results, high arch and flat foot may be associated with altered activation pattern of knee stabilizers and may increase the risk of injuries in the knees.

کلیدواژه‌ها [English]

  • Electromyography
  • Pronation
  • Supination
  • Lower extremity
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