تأثیر خستگی ناشی از فعالیت وامانده‌ساز بر تعادل پویا و زمان بازیافت تعادل مردان فعال دارای زانوی پرانتزی و طبیعی

نوع مقاله: مقاله پژوهشی

نویسندگان

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

2 دانشیار، گروه حرکات اصلاحی و آسیب‌شناسی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی دانشگاه خوارزمی تهران، ایران

چکیده

با توجه به نقش کلیدی تعادل در فعالیت­های روزانه و ورزشی، هدف از این تحقیق، بررسی تأثیر خستگی ناشی از فعالیت وامانده‌ساز بر تعادل پویا و زمان بازیافت تعادل مردان فعال دارای زانوی پرانتزی و طبیعی بود. 40 دانشجوی مرد فعال سالم، شامل 20 نفر دارای زانوی پرانتزی و 20 نفر دارای زانوی طبیعی در این تحقیق نیمه‌تجربی شرکت کردند. ناهنجاری زانوی پرانتزی با کولیس و گونیامتر انداز­ه­گیری شد. از آزمون آستراند برای ایجاد خستگی استفاده شد. برای تجزیه‌وتحلیل داده­ها از نرم‌افزار SPSS و آزمون‌های آماری تحلیل واریانس مرکب درون- برون­گروهی، t مستقل و t زوجی استفاده شد. نتایج حاصل از میانگین شاخص ثبات پویا از طریق آزمون t زوجی نشان داد که این شاخص در هر دو گروه در مقایسۀ پیش‌آزمون و پس‌آزمون افزایش معنا­داری داشت (00/0= P). اما آزمون t مستقل نشان داد که میانگین این تغییرات در دو گروه تفاوت معنا­داری نداشت (56/0=  P). همچنین شاخص ثبات پویا در دو گروه 10 دقیقه پس از خستگی به‌طور کامل بازیافت شد. جابه‌جایی خط جاذبه به طرف داخل در افراد زانو پرانتزی می­تواند موجب افزایش نوسانات پوسچر طرفی شود و از آنجا ­که ناهنجاری زانوی پرانتزی موجب چرخش داخلی ساق پا و تبدیل آن به پرونیشن مفصل ساب تالار در وضعیت تحمل وزن می­شود، این تغییر در ساختارهای پا می­تواند موجب تغییر عملکرد پا برای کنترل تعادل شود.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Fatigue Induced by Exhaustive Exercises on Dynamic Balance and Balance Recovery Time in Active Men with Genu Varum and Normal Knee

نویسندگان [English]

  • seyedkazem mosavi 1
  • mohammad reza eslamipour 1
  • Seyed Sadraddin Shojaeddin 2
1 MSc, Department of Corrective Exercises and Sports Injury, Faculty of Physical Education and Sport‌ Sciences, Kharazmi‌ University‌, Tehran, Iran
2 -Associate Professor, Department of Corrective Exercises and Sports Injury, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
چکیده [English]

Abstract
Balance plays a key role in daily and sports activities. The aim of this study was to investigate the effect of fatigue induced by exhaustive exercises on dynamic balance and balance recovery time in active men with genu varum and normal knee. 40 active healthy male students including 20 subjects with genu varum deformity and 20 normal subjects participated in this semi-experimental study. Genu varum deformity was assessed with a caliper and a goniometer. Strand test was used to create fatigue. SPSS software and statistical tests of analysis of combined variance within-between groups, t test and paired t test were used to analyze data. The results of the mean dynamic balance index by paired t test showed that this index increased significantly in the posttest and pretest comparison in both groups (P=0.00). However, independent t test showed that the mean of these changes was not significantly different between the groups (P=0.56). The dynamic balance index in both groups was fully recovered 10 minutes after fatigue. Medial displacement of the gravity line could increase the lateral posture sways in subjects with genu varum and since this deformity causes internal rotation of the leg and pronation of the subtalar joint in weight-bearing condition, leg structure changes can change leg function to control balance.

کلیدواژه‌ها [English]

  • : Balance Recovery
  • Dynamic balance
  • Exhaustive Exercises
  • fatigue
  • Genu varum
 

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