مقایسه اثر چهار و شش هفته تمرینات عصبی-عضلانی بر بهبود راستای زانوی دانشجویان پسر در هنگام فرود

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد تربیت بدنی، گروه تربیت بدنی عمومی، دانشکده علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

2 استادیار آسیب شناسی ورزشی و حرکات اصلاحی، گروه تربیت بدنی عمومی، دانشکده علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

3 دانشیار بیومکانیک ورزشی، گروه تربیت بدنی عمومی، دانشکده علوم ورزشی، دانشگاه حکیم سبزواری، سبزوار، ایران

چکیده

مقدمه و اهداف
هدف از تحقیق حاضر مقایسه اثر چهار و شش هفته تمرینات عصبی‌-عضلانی بر راستای زانوی دانشجویان پسر در هنگام فرود می‌باشد.
مواد و روش­ ها
در تحقیق حاضر 36 نفر از دانشجویان پسر دوره کارشناسی دانشگاه علمی کاربردی مشهد انتخاب شدند و به طور تصادفی در سه گروه چهار هفته‌ای (شش جلسه در هفته)، شش هفته‌ای (چهار جلسه در هفته) تمرینات عصبی‌-عضلانی و کنترل قرار گرفتند. زاویه فلکشن زانو در لحظه اولین تماس پا با زمین و اوج فلکشن زانو در وضعیت‌های فرود با هر دو پا، پای برتر و غیربرتر در اجرای حرکت پرش-فرود با دو دوربین تصویربرداری و سپس محاسبه شد.
یافته­ ها
یافته­ ها نشان داد تمرینات عصبی-عضلانی در هر دو گروه چهار و شش هفته نسبت به گروه کنترل با اندازه اثر بسیار قوی در لحظه اولین تماس پا با زمین و در اوج فلکشن زانو در همه وضعیت‌های فرود افزایش معنی­ داری داشته است. همچنین در مقایسه بین دو گروه، زاویه فلکشن زانو در گروه چهار هفته‌ای نسبت به گروه شش هفته‌ای تمرینات عصبی-‌عضلانی در لحظه اوج فلکشن زانو در همه وضعیت‌های فرود و در لحظه اولین تماس پا با زمین در وضعیت  فرود با پای غیربرتر نیز افزایش معنی­ داری داشته است. اگرچه در لحظه اولین تماس پا با زمین در وضعیت فرود با هر دوپا و فرود با پای برتر تفاوت معنی­ داری مشاهده نشد.
نتیجه­ گیری
به نظر می‌رسد تمرینات عصبی‌-عضلانی در هر دو گروه چهار و شش هفته تمرینات عصبی‌-عضلانی نسبت به گروه کنترل با اندازه اثر بسیار قوی در لحظه اولین تماس پا با زمین و در اوج فلکشن زانو در همه وضعیت‌های فرود افزایش معنی­داری داشته است. همچنین در مقایسه بین دو گروه، زاویه فلکشن زانو در گروه چهار هفته‌ای نسبت به گروه شش هفته‌ای تمرینات عصبی‌-عضلانی در لحظه اوج فلکشن زانو در همه وضعیت‌های فرود و در لحظه اولین تماس پا با زمین در وضعیت فرود با پای غیربرتر نیز افزایش معنی­داری داشته است. اگرچه در لحظه اولین تماس پا با زمین در وضعیت فرود با هر دوپا و فرود با پای برتر تفاوت معنی­ داری مشاهده نشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Comparison of the Effects of Four and Six Weeks of Neuromuscular Training on Knee Alignment in Male Students during Landing

نویسندگان [English]

  • Vahid Siamaki Gharyehsafa 1
  • Mohammadreza Mohammadi 2
  • Mohsen Damavandi 3
1 Master’s student in Physical Education, Faculty of Sport Sciences, Hakim Sabzevari University. Sabzevar, Iran
2 PhD, Assistant Professor of Sport Injury and Corrective Exercises, Faculty of Sport Sciences, Hakim Sabzevari University. Sabzevar, Iran
3 PhD, Associate Professor of Sport Biomechanics, Faculty of Sport Sciences, Hakim Sabzevari University. Sabzevar, Iran
چکیده [English]

Background and Aims: The purpose of the present study was to compare the effects of four and six weeks of neuromuscular exercises on male knee alignment during landing.
Materials and Methods: A total of 36 male students of Applied-Science University of Mashhad were selected and divided into three groups (four weeks of neuromuscular training, six weeks of neuromuscular, and control). The kinematics of volunteers' knees were measured using the SKILL SPECTOR software in running the jump-landing motion.
Results: The results revealed that neuromuscular training in both groups of four weeks and six weeks showed a significant increase in knee flexion angle in the sagittal plane in three landing situations with both legs, upper legs, and non-superior feet (P<0.05). There was also a significant difference between the two groups of four weeks and six weeks of neuromuscular training in the moment of peak knee flexion and it was quite favorable for the group of four weeks (P<0.05). Also, at the moment of landing, there was a significant difference between the two groups of four and six weeks of practice in landing conditions with non-premium foot (P<0.05). However, at the moment of landing between the two groups, no significant difference was observed in the landing status of both sides and landing with the upper leg (P>0.05).
Conclusion: According to the findings, the current study showed that four weeks of neuromuscular training (24 sessions) improved the alignment of lower limb at sagittal level and increased knee bending angles in hop-landing with high effect size at the level of six weeks of training. Therefore, this program can be used as a training model for preventing injuries due to inappropriate knee orientation, especially ligamental injuries.

کلیدواژه‌ها [English]

  • Neuromuscular training
  • Knee alignment
  • Sagittal plane

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دوماهنامه علمی - پژوهشی طب توانبخشی
دوره 9، شماره 2
تیر 1399
صفحه 266-276

فایل ها

سابقه مقاله

  • تاریخ دریافت: 20 اردیبهشت 1398
  • تاریخ بازنگری: 08 تیر 1398
  • تاریخ پذیرش: 22 مهر 1398
  • تاریخ اولین انتشار: 01 تیر 1399

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