نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناس‌ارشد ، دانشکده تربیت‌بدنی و علوم ورزشی، دانشگاه حکیم سبزواری

2 استادیار، دانشکده تربیت‌بدنی و علوم ورزشی، دانشگاه حکیم سبزواری

3 دانشیار، دانشکده تربیت‌بدنی و علوم ورزشی، دانشگاه حکیم سبزواری

چکیده

هدف پژوهش حاضر ارزیابی اثر تمرین راه‌رفتن به عقب بر اوج تنش عضلات مفاصل زانو و مچ پا هنگام راه‌رفتن به جلو بود. 30 نفر دانشجوی پسر داوطلب به دو گروه کنترل و تجربی تقسیم شدند. آزمودنی‌های گروه تجربی در برنامۀ چهارهفته‌ای تمرین راه‌رفتن به عقب شرکت کردند. سینماتیک حرکت مفاصل زانو و مچ پای اندام برتر به همراه فعالیت الکتریکی عضلات آن‌ها هنگام راه‌رفتن به جلو در پیش‌آزمون و پس‌آزمون ضبط شد. حداکثر اوج تنش عضلانی مفاصل زانو و مچ پا در فازهای تاشدن و بازشدن تعیین شد. نتایج نشان داد که تمرین راه‌رفتن به عقب موجب کاهش اوج تنش برخی عضلات بازکننده و تاکننده زانو هنگام راه‌رفتن به جلو می‌شود. این کاهش که نشان‌دهندۀ تکامل سازوکارهای کنترلی سیستم اعصاب مرکزی برای حفظ تعادل مفصلی است، باعث کاهش هزینه انرژی و درنهایت تأخیر خستگی عضلانی هنگام راه‌رفتن به جلو می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of backward walking training on the maximum muscles tension of the knee and ankle joints during forward walking

نویسندگان [English]

  • Maryam Rahimi-Chitgar 1
  • Mohsen Damavandi 2
  • Seyyed Alireza Hosseini-Kakhk 3

چکیده [English]

The purpose of this study was to assess the effect of backward walking training on the maximum tensions of the knee and ankle joints’ muscles during forward walking. Thirty volunteer male university students were divided into control and experimental groups and the subjects of the experimental group participated in a 4-week backward walking training program. Kinematics of the knee and ankle joints of the dominant limb along with the electromyography of their muscles were recorded during forward walking in pre- and post-tests. Maximum muscular tensions of the knee and ankle joints were determined during flexion and extension phases. Results showed backward walking training decreased the maximum tensions of some of the knee extensors and flexors during forward walking. This reduction, that indicates improvement of control mechanisms of the central nervous system to maintain the joint balance, decreases the energy expenditure and delays the muscle fatigue during forward walking.

کلیدواژه‌ها [English]

  • Electromyography
  • Muscle Tension
  • Walking
  • Knee
  • Ankle
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