پژوهش در طب ورزشی و فناوری

مقایسه ویژگیهای کینماتیکی اندام فوقانی در شوت سه‌گام هندبال بین بازیکنان نوجوان و بزرگسال

نویسندگان

وحیده رنجبری
مهدی رافعی بروجنی
شهرام لنجان نژادیان

دانشگاه اصفهان

https://doi.org/10.29252/jsmt.12.1.59
چکیده
مقدمه و هدف: تحلیل کینماتیک اجرای ورزشکاران نخبه یک روش مهم در تعیین پارامترهای موثر بر اجراهای ورزشی است. هدف از این پژوهش مقایسه ویژگی های کینماتیکی اندام فوقانی بازیکنان نوجوان و بزرگسال در شوت سه گام هندبال بود. روش شناسی: تعداد نه هندبالیست بزرگسال نخبه شاغل در لیگ برتر کشور (سن 69/2±55/23 سال) و ده هندبالیست نوجوان عضو باشگاه­های لیگ برتری کشور (سن 69/0±4/16 سال) در این پژوهش شرکت کردند. تصاویر مربوط به اجرای مرحله‌ی نهایی شوت به صورت سه بعدی ثبت شد و در نرم­افزار متلب تحلیل و اطلاعات مربوط به موقعیت زاویه­ای، سرعت زاویه­ای و بیشینه­ی سرعت زاویه­ای و موقعیت مربوط به آن برای مفاصل اندام فوقانی ورزشکاران شامل مچ، آرنج و شانه به­دست آمد. تحلیل آماری از طریق آزمون تی مستقل در سطح معنی داری (05/0≥p) انجام شد. یافته‌ها: در موقعیت زاویه‌ای باز شدن مفصل آرنج در بیشینه سرعت زاویه­ای و سرعت خطی توپ در لحظه رهایی تفاوت بین دو گروه معنی­دار بود. بحث و نتیجه­گیری: به نظر می­رسد عواملی غیر از ویژگیهای کینماتیک مثل ویژگیهای آنتروپومتری همزمان با عامل قدرت عضلات ورزشکاران بزرگسال در رسیدن به سرعت بیشینه در رهایی توپ، کمک کننده می­باشد.

کلیدواژه‌ها

شوت سه گام هندبال
سرعت خطی
موقعیت زاویه‌ای
سرعت زاویه‌ای

عنوان مقاله English

The comparison of kinematic characteristics of upper extremity of adolescences and adults in three steps shot in handball

نویسندگان English

Vahideh Ranjbari
Mehdi Rafei Borujeni
Shahram Lenjannejadian
University of Isfahan
چکیده English

Introduction and aim: The kinematic analysis of elite athletes’ performance is an important method to determine effective parameters of sport performances. The purpose of the present study was to compare kinematic characteristics of the upper extremity in adolescence and adult players in three-step shoot in Handball. Methods: Nine elite adult handball players working in the Super League (23.55 ± 2.69 years) and ten teen handball players (16.4 ± 0.69 years) participated in this study. The pictures related to the final stage of the shoot were recorded three dimensionally and analyzed by a graphic interface in MATLAB software. The data related to the angular position, angular velocity and peak angular velocity and position corresponding to the upper limb joints of athletes, including the wrist, elbow and shoulder were obtained. Statistical data were used for analysis through student t-test for two independent groups with significance level p ≥ 0.05 in order to compare two groups. Findings: There were significant differences between two groups in angular position of elbow joint during extension at maximum angular velocity and linear velocity of the ball at the time of the release. Conclusion: it seems that other factors than cinematic characteristics such as anthropometric characteristics along with muscle strength in adult are important to get the maximum velocity of ball release.

کلیدواژه‌ها English

Three-step Shot in Handball
Linear Velocity
Angular Position
Angular Velocity
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