تأثیر سیکل قاعدگی بر تغییرپذیری هماهنگی ریتم لگنی-رانی حین اجرای ضربه آپدولیوچاگی در تکواندوکاران زن نخبه

نویسندگان

گروه بیومکانیک و آسیب شناسی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه خوارزمی، تهران، ایران

چکیده
مقدمه: در طول چرخه قاعدگی، بدن با نوسانات هورمون‌های جنسی مواجه می‌شود که می‌تواند بر عملکرد و نرخ آسیب‌پذیری زنان تأثیر بگذارد. در سیستم یکپارچه بدن، هماهنگی بین مفاصل و اندام‌ها بر یکدیگر و بر هدف نهایی حرکت تأثیرگذار است.

هدف مطالعه: بررسی تاثیر سیکل قاعدگی در فازهای مختلف بر تغییرپذیری هماهنگی ریتم لگنی_رانی حین اجرای تکنیک آبدولیوچاگی تکواندو صورت پذیرفت.

روش: این پژوهش به‌صورت کاربردی و با روش نیمه‌تجربی روی ۱۲ تکواندوکار زن نخبه تهران انجام شد که به روش نمونه‌گیری در دسترس انتخاب شده بودند. داده‌های کینماتیکی با ۸ دوربین وایکان (۲۴۰ هرتز) و سیستم مارکرگذاری پلاگین گیت در سه فاز قاعدگی (فولیکولار، اوولیشن، لوتئال) جمع‌آوری و با فیلتر باترورث مرتبه چهارم پردازش شدند. دامنه حرکتی مفاصل بوسیله نرم‌افزار نکسوس و تغییرپذیری هماهنگی با روش کدگذاری بردار اصلاح شده محاسبه شد. از آزمون تحلیل واریانس یک‌طرفه و نقشه‌برداری آماری پارامتریک برای بررسی تفاوت‌ها در زوایای مفاصل، الگوی هماهنگی و تغییرپذیری استفاده شد.

نتایج: نتایج آزمون آنالیز واریانس یک‌طرفه و روش نقشه‌برداری آماری پارامتریک نشان داد که هیچ رابطه معناداری بین دامنه حرکتی مفاصل لگن و ران، فراوانی الگوی هماهنگی و تغییرپذیری آن در مراحل مختلف چرخه قاعدگی وجود ندارد (0/05

کلیدواژه‌ها


عنوان مقاله English

The Effect of the Menstrual Cycle on the Coordination Variability of Pelvic-Hip Rhythm During the Roundhouse Kick Executed by Female Elite Taekwondo Players

نویسندگان English

Samira Sadat Sajjadi
Mohammad Aziminia
Ali Abbasi
Mehdi Khaleghi Tazji
Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
چکیده English

Introduction

During the menstrual cycle, the body experiences fluctuations in sex hormones, which can affect performance and injury rates in women. In the integrated human body system, the coordination between joints and limbs influences each other and the ultimate goal of movement.

Objective

The study aimed to investigate the impact of different phases of the menstrual cycle on the variability of pelvic-hip rhythm coordination during the execution of the roundhouse kick in taekwondo.

Methods

This applied, quasi-experimental study was conducted on 12 elite female taekwondo athletes from Tehran, selected through convenience sampling. Kinematic data were collected using 8 Vicon cameras (240 Hz) and the Plug-in Gait marker system across three menstrual phases (follicular, ovulation, and luteal). The data were processed using a fourth-order Butterworth filter. Joint range of motion (ROM) was analyzed using Nexus software, and coordination variability was calculated using the modified vector coding method. One-way ANOVA and parametric statistical mapping were used to examine differences in joint angles, coordination patterns, and variability.

Results

The results of study showed no significant relationship between the ROM of the hip and pelvic joints, the frequency of coordination patterns, and variability across different phases of the menstrual cycle (P ≥ 0.05).

Discussion and Conclusion

The findings suggest that adaptations developed through years of training under various menstrual cycle conditions may mitigate the significant impact of this factor on the performance of elite athletes. Additionally, the skill level of professional athletes enables them to optimally utilize coordination variability to achieve desired performance outcomes.

کلیدواژه‌ها English

Roundhouse kick
Taekwondo
Coordination variability
Menstrual cycle
Pelvic-Hip Rhythm
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