مطالعات طب ورزشی

اثر تغییر عرض رکاب بر کینماتیک مفصل زانو در صفحه فرونتال در دوچرخه سواران با زاویه کیوهای متفاوت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری بیومکانیک ورزشی، دانشکدۀ تربیت‌بدنی و علوم ورزشی، دانشگاه خوارزمی، تهران، ایران

2 استادیار، گروه بیومکانیک ورزشی، دانشکدۀ تربیت‌بدنی و علوم ورزشی، دانشگاه خوارزمی، تهران، ایران

چکیده
هدف پژوهش حاضر بررسی اثر تغییر عرض رکاب (Q Factor) بر کینماتیک مفصل زانو در صفحه فرونتال در دوچرخه سواران با زاویه کیوهای متفاوت بود. سه گروه 8 نفره از دوچرخه سواران جاده رو (1- زاویه کیو کوچک، 2- زاویه کیو نرمال و 3- زاویه کیو بزرگ)، در چهار عرض رکاب 16، 19، 22 و 25 سانتی‌متر رکاب زدند. متغیرهای ماکزیم ابداکشن، ماکزیمم اداکشن، دامنه حرکتی و میانگین زاویه ابداکشن/اداکشن مفصل زانو با استفاده از سیستم آنالیز حرکت 8 دوربینه حین رکاب زدن محاسبه گردید. نتایج نشان داد در متغیرهای ماکزیمم، مینیمم و میانگین زاویه ابداکشن مفصل زانو بین گروه 1 و گروه 3 تفاوت معناداری وجود دارد. همچنین اثر تغییر عرض رکاب بر متغیرهای ماکزیمم، مینیمم و میانگین ابداکشن مفصل زانو معنادار و با افزایش عرض رکاب، ابداکشن مفصل زانو نیز افزایش یافته بود. همچنین اثر تعاملی بین عامل درون‌گروهی و بین‌گروهی در تمامی متغیرها غیر معنادار بود. نتایج پژوهش حاضر نشان داد تفاوت در زاویه کیو افراد و همچنین افزایش عرض رکاب بر کینماتیک مفصل زانو در صفحه فرونتال اثرگذار است؛ بنابراین در انتخاب عرض رکاب مناسب برای دوچرخه سواران، تفاوت در زاویه کیو آنها باید در نظر گرفته شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله English

The effect of changes in pedal width on the frontal plane knee kinematics in cyclists with different Q angles

نویسندگان English

  • Mohammad Amin Mohammadian 1
  • Ali Abbasi 2
  • Mehdi Khaleghi Tazji 2
1 Department of Pathology and Sport Biomechanics, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
2 Department of Pathology and Sport Biomechanics, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
چکیده English

The aim of this study was to investigate the effect of changes in pedal width (Q Factor) on knee frontal plane kinematics in cyclists with different Q angles. Three groups of 8 road cyclists (1- Low Q angle, 2- Normal Q angle and 3- High Q angle) cycled in four different pedal widths of 16, 19, 22 and 25 cm. The variables of maximum abduction, maximum adduction, range of motion and mean abduction/adduction angle of the knee joint during cycling were calculated. The results showed that there was significant difference between group 1 and group 3 in the variables of maximum, minimum and mean abduction angle of the knee joint. Also, the effect of changing in the Q Factor was significant on the variables of maximum, minimum and mean abduction of the knee joint. in all variables, the interaction effect between inter-group and between-group factor was not significant. The results of the present study showed that the difference in the Q angle of individuals and also the increase in pedal width affect the frontal plane knee joint kinematics; Therefore, in choosing the appropriate pedal width for cyclists, the difference in their Q angle should be considered.

کلیدواژه‌ها English

  • Q Factor
  • knee joint
  • Q angle

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مطالعات طب ورزشی
دوره 14، شماره 31 - شماره پیاپی 31
اردیبهشت 1401
صفحه 139-160

  • تاریخ دریافت 01 آذر 1400
  • تاریخ بازنگری 11 اردیبهشت 1401
  • تاریخ پذیرش 19 اردیبهشت 1401

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