مقایسه میزان فعالیت الکترومیوگرافی عضلات منتخب مچ پا در ورزشکاران دارای محدودیت حرکتی دورسی‌فلکشن مچ پا با ورزشکاران سالم، حین پرش‌فرود تک‌پا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 1. کارشناس ارشد آسیب شناسی ورزشی و حرکات اصلاحی دانشگاه تهران. تهران. ایران

2 2. استادیار گروه طب ورزش دانشگاه تهران. تهران . ایران

3 3. استاد گروه طب ورزش دانشگاه تهران. تهران. ایران

4 4. دانشجوی دکتری آسیب شناسی ورزشی دانشگاه باهنر کرمان. ایران

5 5. دانشجوی کارشناسی ارشد کنترل حرکتی دانشگاه تهران. تهران. ایران

10.22037/jrm.2013.1100141

چکیده

مقدمه و اهداف
محدودیت دامنه­ی حرکتی دورسی­فلکشن مچ پا به عنوان یکی از مهم­ترین عوامل خطرساز بروز آسیب اسپرین مچ پا می­باشد که می­تواند کنترل عصبی_عضلانی عضلات اطراف مچ پا را دچار اختلال کند. لذا هدف از تحقیق حاضر مقایسه­ی میزان فعالیت الکترومیوگرافی منتخبی از عضلات اطراف مفصل مچ پای ورزشکاران دارای محدودیت دامنه­ی حرکتی دورسی­فلکشن مچ پا با ورزشکاران سالم، در حین انجام حرکت پرش_فرود تک­پا می­باشد.
مواد و روش ها
15 نفر ورزشکار مرد دارای محدودیت دامنه­ی حرکتی دورسی­فلکشن مچ پا در گروه دارای محدودیت و همین تعداد ورزشکار مرد فاقد محدودیت دامنه­ی حرکتی دورسی­فلکشن مچ پا نیز در گروه سالم قرار گرفتند. جهت اندازه­گیری دامنه­ی حرکتی مچ پا از گونیامتر یونیورسال استفاده شد. فعالیت الکترومیوگرافی عضلات پرونئوس لانگوس، گاستروکنمیوس خارجی، سولئوس و تیبیالیس قدامی، حین انجام تکلیف پرش­فرود تک پا ثبت شد. برای مقایسه میزان فعالیت الکترومیوگرافی عضلات بین دو گروه از روش آماری تحلیل واریانس چند متغیری استفاده شد. سطح معنی داری در تمامی تجزیه و تحلیل‌های آماری 05/0p≤ در نظر گرفته شد.
یافته ها
نتایج تحقیق نشان داد که عضلات پرونئوس لانگوس، گاستروکنمیوس خارجی و سولئوس در گروه ورزشکاران دارای محدودیت حرکتی، به­طور معنی­داری دارای میزان فعالیت کمتری نسبت به گروه کنترل می­باشند. اما میزان فعالیت عضله­ی تیبیالیس قدامی، در بین دو گروه تفاوت معنی­داری نداشت(05/0p≤).
نتیجه گیری
کاهش میزان فعالیت عضلات مچ پا که در گروه محدودیت حرکتی مشاهده شد را می­توان به تغییر در برنامه­های از پیش طراحی شده­ی کنترل حرکتی سیستم عصبی و همچنین اختلال در پیام­های آوران حس عمقی مفصل مچ پا نسبت داد.

کلیدواژه‌ها


عنوان مقاله [English]

The comparison of the electromyography activity of selected muscles of the ankle joint in athletes with ankle dorsiflexion range of motion limitation with healthy athletes during the single-leg jump landing

نویسندگان [English]

  • Mohammad Kalantariyan 1
  • Hooman Minoonejad 2
  • Reza Rajabi 3
  • Ramin Beyranvand 4
  • Ali Zahiri 5
1 1 MSc in corrective exercise and sport injury, university of Tehran. Tehran. Iran
2 2 Assistant Professor, Department of Sport Medicine, Universiy of Tehran. Tehran. Iran
3 3 Professor, Department of Sport Medicine, Universiy of Tehran. Tehran. Iran
4 4 PHD student in sport injury, Shahid Ba Honar,University of Kerman. Kerman. Iran
5 5 MSc in Motor Control, university of Tehran. Tehran. Iran
چکیده [English]

Background and Aim: Limitation of ankle dorsiflexion range of motion as the most important risk factors for ankle sprain injury can cause disorders in neuromuscular control of muscles around the ankle. The aim of this study was to compare the EMG activity of selected muscles around the ankle joint of those athletes with ankle dorsiflexion range of motion limitation with healthy Athletes during the single-leg jump landing.
Materials and Methods: Fifteen male athletes with ankle dorsiflexion range of motion limitations were categorized as the group with limitation and the same number of male athletes without limitation in ankle dorsiflexion range of motion as the healthy group. Universal goniometer was used to measure range of motion of the ankle. EMG activity of selected muscles of the ankle during single-leg jump landing task was recorded. A multivariate analysis of variance was used to compare the EMG activity of the muscles between groups. The significance level for all analyses was set as p≤0/05.
Results: The results showed that Peroneus Longus, Lateral Gastrocnemius and Soleus muscles in the athletes with motion limitation had significantly lower levels of activity than control group. But the Tibialis Anterior muscle activity was not significantly different between the two groups (p≤0/05).
Conclusions: The reduction in muscle activity observed in the group with motion limitation can be attributed to changes in preplanned programs of the motor control of nervous system and proprioceptive afferent messages disorder of ankle joint.

کلیدواژه‌ها [English]

  • EMG activity
  • limitation of ankle dorsiflexion
  • Athlete
  • single-leg jump landing
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