تفاوت های فعالیت عضلات کوادریسپس و همسترینگ بین زنان و مردان والیبالیست در عمل پرش- فرود

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری تربیت بدنی ویژه، دانشکده تربیت بدنی دانشگاه گیلان، گیلان، ایران

2 دکترای حرکات اصلاحی و آسیب شناسی ورزشی، استادیار دانشکده تربیت بدنی دانشگاه تهران، تهران، ایران

10.22037/jrm.2016.1100170

چکیده

مقدمه و اهداف
آسیب لیگامان صلیبی قدامی در زنان 2 تا 8 برابر بیشتر از مردان رخ میدهد و یکی از دلایل آن وجود نقص هایی در سیستم کنترل نروماسکولار زنان می باشد. از این رو هدف این مطالعه بررسی تفاوت های موجود در الگو و فعالیت الکترومیوگرافی عضلات کوادریسپس و همسترینگ بین مردان و زنان والیبالیست در پرش- فرود است.
مواد و روش ها
در این مطالعه که از نوع کاربردی است از طریق نمونه گیری هدفمند 18 والیبالیست دانشگاهی (9 مرد و 9 زن) بصورت داوطلبانه شرکت کردند. داده های میزان فعالیت و زمان شروع فعالیت عضله در هنگام فرود بین زنان و مردان مورد بررسی قرار گرفتند.
یافته ها
مقدار فعالیت فیدفورواردی عضلات کوادریسپس در زنان بطور معنی داری بیشتر از مردان بود(001/0>p). در میزان فعالیت همسترینگ بین زنان و مردان هیچ تفاوت معنی داری وجود ندارد. نسبت فعالیت عضلات همسترینگ به کوادریسپس در زنان بطور معنی داری کمتر از مردان در فاز فیدفوروارد است(05/0>p).
بحث و نتیجه گیری
یافته های تحقیقاتی که تاکنون در زمینه تفاوتهای جنسیتی موجود در فعالیت همسترینگ و کوادریسپس انجام گرفته است بسیار متناقض می باشند و نتایج این تحقیق نیز دامنه این تناقضات را افزایش داد. این تناقضات میتواند ناشی از تعداد کم نمونه های تحقیقات و یا تفاوتهای موجود در سطح آمادگی جسمانی و نوع رشته ورزشی آزمودنی ها باشد. تنها نتیجه مشترک تمام تحقیقات تقویت و بهبود سیستم نوروماسکولار همسترینگ می باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Differences in quadriceps and hamstring activity between male and female volleyball players during jump-landing

نویسندگان [English]

  • pedram pourmahmoudian 1
  • Hooman Minoonejad 2
1 PhD Student in Special Physical education, Faculty of Physical education, University of Guilan, Guilan, Iran
2 PhD of Corrective Exercises and Sport Injury, Assistant Professor of Faculty of Physical education, University of Tehran, Tehran, Iran
چکیده [English]

Background and aim: Anterior cruciate ligament injury occurs in females 2 to 8 times more than it does in males. One of the reasons for this is existing deficits in neuromuscular system of females. So, the purpose of the present study was to investigate the differences between male and female volleyball players in pattern and electromyography activity of quadriceps and hamstring muscles in jump-landing task.
Materials and Methods: In the present study 18 collegiate volleyball players (9 men and 9 women) participated on a voluntary basis. The results of muscles activity and onset time in landing were compared between male and female athletes.
Results: Feed forward activity of quadriceps muscles in females are significantly more than that in males (p<0.001). In the hamstring activity, there is no significant difference between men and women. Hamstring to quadriceps activity ratio in women was observed to be significantly less than that in men in feed forward phase (p<0.05).
Conclusion: The results of studies in the field of gender differences are inconsistent and this can be related to our few samples or differences in the samples' physical fitness and sport type. The only common result of all studies is improvement of neuromuscular system and reinforcement of hamstring.

کلیدواژه‌ها [English]

  • Jump-landing
  • Quadriceps dominance
  • Anterior Cruciate ligament
  • Hamstring to Quadriceps Ratio
  • Volleyball player
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