تأثیر هشت هفته تمرینات اصلاحی بر میزان فعالیت عضلات درگیر در استراتژی های تعادلی مچ پای دختران دارای سندروم پروناسیون اندام تحتانی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری آسیب شناسی ورزشی و حرکات اصلاحی، پردیس دانشگاه خوارزمی، تهران، ایران

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

3 استادیار آسیب شناسی ورزشی و حرکات اصلاحی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه خوارزمی، تهران، ایران

4 دانشیار آسیب شناسی ورزشی و حرکات اصلاحی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه شهید رجایی، تهران، ایران

چکیده

مقدمه و اهداف
سندروم پروناسیون اندام تحتانی، شامل پرونیشن بیش از اندازه پا، چرخش داخلی و نزدیک شدن زانو می­باشد. هنگامی که تمرینات ورزشی به درستی طراحی و یکپارچه شود، با استفاده از یک روش تمرینی چندوجهی می­توان اهداف توانبخشی فرد را بدون نیاز به مداخلات دیگر به دست آورد. استراتژی تعادلی مچ پابا حرکت دادن کل بدن حول مفصل مچ پا، تعادل را بازیابی می­کند. هدف مطالعه حاضر بررسی هشت هفته تمرین اصلاحی ترکیبی بر میزان فعالیت عضلات درگیر در استراتژی مچ پای دختران مبتلا به سندروم انحراف پروناسیون بود.
مواد و روش­ ها
در مطالعه نیمه­تجربی حاضر با طرح پیش­آزمون- پس­آزمون و گروه کنترل، 30 دانش­آموز 16-13 ساله با وضعیت سندروم پروناسیون اندام تحتانی وجود داشتند. افراد مورد مطالعه به طور تصادفی به دو گروه تجربی (15 نفر) و کنترل (15 نفر) تقسیم شدند. قبل و پس از هشت هفته تمرین به مدت 60 تا 80 دقیقه و سه جلسه در هفته، کف پای صاف با استفاده از تست افت ناوی، والگوس زانو با اندازه­گیری زاویه تیبیوفمورال، فعالیت الکترومیوگرافی عضلات تیبیای قدامی و گاستروکنمیوس داخلی روی سیستم تعادلی بایودکس هنگام ایستادن روی پای غالب ارزیابی شد.
یافته ­ها
نتایج تحلیل کوواریانس، تفاوت معناداری در الکترومیوگرافی عضلات تیبیای قدامی و گاستروکنمیوس داخلی دو گروه در پس­آزمون را نشان داد. تمرینات اصلاحی بر میزان فعالیت عضلات تیبیای قدامی و گاستروکنمیوس داخلی در مرحله پس­آزمون نسبت به پیش­آزمون تفاوت معناداری داشت و به طور تقریبی 94% و 62% به ترتیب بر الکترومیوگرافی عضلات مذکور دختران دارای سندروم پروناسیون اندام تحتانی تأثیر داشت (001/0=P و 026/0=P)
نتیجه­ گیری
به نظر می­رسد تمرینات ترکیبی اصلاحی منجر به تغییر فعالیت عضلات مسئول کنترل تعادل از جمله افزایش فعالیت عضله تیبیای قدامی و کاهش فعالیت عضله گاستروکنمیوس که مربوط به استراتژی مچ پا هستند، می­شود. بنابراین به متخصصین و محققین توصیه می­شود جهت بهبود استراتژی­های تعادلی در افراد دارای سندروم پروناسیون، تمرینات اصلاحی مد نظر قرار گیرد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Eight-Week Corrective Exercises on the activity of Involved Muscles in Ankle Balance Strategies in Girls with Lower Limb Pronation Syndrome

نویسندگان [English]

  • Mahtab Najafi 1
  • Sadrodin Shojaedin 2
  • Maliheh Hadadnezhad 3
  • Amir Hossein Barati 4
1 PhD Candidate, School of Sport Corrective Exercise, Kharazmi Pardis University, Tehran, Iran
2 Associate Professor, School of Sport biomechanics and Corrective Exercise, Kharazmi University, Tehran, Iran.
3 Associate Professor, School of Sport biomechanics and Corrective Exercise, Kharazmi University, Tehran, Iran.
4 Associate Professor, School of Sport biomechanics and Corrective Exercise, Rajaee shahid University, Tehran, Iran.
چکیده [English]

Background and Aim: Thelower extremity pronation syndrome involves foot hyper pronation, knee internal rotation, and adduction. When sport exercises are properly designed and integrated, using a multifaceted training approach can help achieve goals without the need for other interventions. Ankle balance strategy restores balance by moving the body around the ankle joint. The aim of the present study was to investigate the effect of eight-weeks of combined corrective exercises on the activity of of involved muscles in girls’ ankle strategy with lower extremity pronation syndrome.
Materials and Method: In the current semi-experimental study with pretest-posttest design and control group, 30 students, aged 13-16 years old, with lower extremity pronation syndrome were randomly divided into two groups of experimental (n=15) and control (n=15). Prior to and after eight weeks of training for 60 to 80 minutes, three times a week, we evaluated flat foot using Navi drop test, knee valgus using tibiofemoral angle measurement, tibialis anterior and medial gastrocnemius muscles Electromyography (EMG) activity on Biodex Balance while standing on dominant.
Results: Covariance analysis showed a significant difference in tibialis anterior and medial gastrocnemius muscles EMG between the two groups in the posttests. Also, corrective exercises was found to be significantly different on tibialis anterior and medial gastrocnemius amount of muscles activity at posttest compared with pretest and had approximately 94% and 62%, respectively, effects on the EMG of these muscles in girls with lower extremity pronation syndrome (p=0,001) (p=0,026).
Conclusion: It seems that corrective mixed exercises led to changes such as increased muscles activity in those responsible for balance control such as increase in the tibialis anterior muscle activity and decrease in the gastrocnemius muscle activity, which are related to the ankle strategy. So it is recommended that specialists and researchers consider corrective exercises in order to improve balance strategies in people with pronation syndrome.

کلیدواژه‌ها [English]

  • Muscle activity
  • Corrective Exercises
  • Lower Extremity Pronation Syndrome: Akle Strategy
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