نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I

نویسندگان

1 کارشناس ارشد فیزیولوژی تمرین، دانشگاه آزاد اسلامی، باشگاه پژوهشگران و نخبگان مشهد، ایران

2 استادیار و عضو هیأت علمی، پژوهشگاه تربیت بدنی و علوم ورزشی، تهران، ایران

3 . دانشجوی دکتری فیزیولوژی ورزش، دانشگاه آزاد اسلامی واحد علوم تحقیقات، تهران، ایران

چکیده

این مطالعه به‌منظور مقایسۀ سرعت هدایت عصبی (NCV) اندام تحتانی سه گروه هشت‌نفره از بازیکنان فوتبال، دوندگان نیمه‌استقامت و دوندگان استقامت به‌همراه گروه کنترل با دامنۀ سنی 21 تا 26 سال انجام گرفت. برای بررسی پارامترهای الکترونروگرافی و سرعت هدایت هر آزمودنی، معاینۀ جداگانۀ تست عصبی محیطی با دستگاه الکترونروگرافی ENG انجام گرفت. به‌منظور تجزیۀ آماری از آزمون تحلیل واریانس برای مقایسۀ میانگین سرعت هدایت عصبی بین گروه‌ها در اندام غالب و غیرغالب و در صورت وجود تفاوت بین گروه‌ها از آزمون تعقیبی توکی استفاده شد. نتایج به‌دست‌آمده برای هر دو اندام غالب و غیرغالب تفاوت معنا‌داری را بین دو گروه نیمه‌استقامتی‌ها در برابر استقامت )0)(P= 0 (P= و فوتبال در برابر استقامت ) 0(P=  ) 0(P=  گزارش کرد. همین‌طور اختلاف معنا‌داری بین نیمه‌استقامتی‌ها در برابر کنترل) 002/0 (P=  (002/0 (P= و فوتبال در برابر کنترل)  0 (P= ) 013/0 (P= ملاحظه شد. در اختلاف اندام غالب و غیرغالب هم اختلاف معنادار فقط در ورزشکاران فوتبال دیده شد) 04/0 (P=. براساس نتایج پژوهش حاضر می‌توان گفت که احتمالاً توسعۀ هدایت عصبی در اندام تحتانی ورزشکاران اغلب در ورزش‌های با شدت بالاتر روی داده است که شاید به سیستم‌های انرژی یکسان آنها مربوط شود و همین‌طور پای برتر و تمرکز روی آن در الگوهای برنامۀ تمرینی محیط متغیر بیشتر از رشته‌هایی صرفاً استقامتی با محرک‌های محیطی ثابت است.
 

کلیدواژه‌ها

عنوان مقاله [English]

A Comparison of Nerve Conduction Velocity of Dominant and Non-Dominant Lower Limb in Athletes and Non-Athletes

نویسندگان [English]

  • Say mostafa Sarabzadeh 1
  • Mohammad Shariatzadeh Jonadi 2
  • Bita Bordbar Azari 3

1 MSc in Exercise Physiology, Islamic Azad University, Young Researchers and Elite Club, Mashhad Branch, Iran

2 Assistant Professor and Faculty Member, Sport Sciences Research Institute, Tehran, Iran

3 PhD Student in Exercise Physiology, Islamic Azad University, Science and Research Branch, Tehran, Iran

چکیده [English]

The aim of this study was to compare nerve conduction velocity (NCV) of lower limb in 3 groups (each group 8 subjects): soccer players (SOC), mid-endurance runners (MR), endurance runners (ER) and a control group (C) with the age range of 21-26. To evaluate electroneurography parameters and conduction velocity of each subject, separate peripheral nerve test with the electroneurography system (ENG) was performed. For data analysis, analysis of variance was used to compare mean nerve conduction velocity in dominant and non-dominant limbs of all groups and Tukey post hoc test was used in case of a difference among the groups. The results for both DL and NDL reported significant differences between MR and ER (P=0) (P=0) and between SOC and ER (P=0) (P=0). Also, there were significant differences between MR and C (P=0.002) (P=0.002) and between SOC and C (P=0) (P=0.013). In terms of the differences of DL and NDL, a significant difference was observed only in SOC (P=0.04). Based on the present study, it can be stated that probably nerve conduction of lower limb of athletes has developed mostly in higher intensity sports and it may be related to their similar energy systems. Also, dominant leg and a concentration on this leg is higher in training patterns of changing environment than mere endurance fields with constant environmental stimuli

کلیدواژه‌ها [English]

  • dominant limb (DL)
  • endurance and mid-endurance
  • nerve conduction velocity (NCV)
  • non-dominant limb (NDL)
  • soccer
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