fa تأثیر خستگی عضلات مرکزی بدن بر تعادل و استقامت زنان ورزشکار عمومى General پژوهشي اصیل Original Research <p> </p> <p dir="RTL" style="margin: 0in 0in 0pt text-align: justify text-indent: 0in -ms-text-justify: kashida text-kashida: 0%"><font size="3"><strong><span lang="FA" style="color:black font-family:b zar mso-bidi-font-size:12.0pt">زمینه و هدف: </span></strong><span lang="FA" style="color:black font-family:b zar mso-bidi-font-size:12.0pt">خستگی </span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"><font color="#000000">یکی از عواملی است که می­تواند موجب کاهش هماهنگی و فعالیت عضلات شود و با توجه به این­که عضلات مرکزی بدن جهت ایجاد یک سطح اتکای باثبات برای انجام حرکات مناسب اندام­ها ضروری هستند. خستگی این عضلات ممکن است بر فعالیت­ افراد<span style="mso-spacerun:yes">  </span>به ویژه ورزشکاران اثر بگذارد.</font></span></font></p> <p> </p> <p dir="RTL" style="margin: 0in 0in 0pt text-indent: 0in"><font size="3"><strong><span lang="FA" style="color:black font-family:b zar mso-bidi-font-size:12.0pt">روش بررسی:</span></strong><span lang="FA" style="color:black font-family:b zar mso-bidi-font-size:12.0pt"> </span><font color="#000000"><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">30 دانشجوی دختر رشته تربیت بدنی در جلسه اول آزمون­های تعادل (ایستا و پویا) و استقامت را در شرایط عادی (بدون حضور خستگی) انجام دادند. در جلسه دوم، ابتدا آزمودنی­ها تمرینات خسته­کننده عضلات مرکزی بدن را اجرا کرده و سپس بلافاصله آزمون­های تعادل ایستا و پویا را در شرایط خسته بودن عضلات مرکزی بدن انجام دادند. در جلسه سوم، ابتدا آزمودنی­ها بار دیگر پروتکل خستگی عضلات مرکزی بدن را اجرا کرده و سپس بلافاصله آزمون­های استقامت عضلات تنه را در شرایط خسته بودن عضلات مرکزی بدن انجام دادند. به منظور مقایسه نتایج تحقیقات قبل و بعد از خستگی از آزمون</span><span dir="LTR" lang="FA" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman"> </font></span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">آماری </span><span dir="LTR" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman">t</font></span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"> وابسته استفاده شد. </span></font></font></p> <p> </p> <p dir="RTL" style="margin: 0in 0in 0pt text-indent: 0in"><font size="3"><font color="#000000"><strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">یافته</span></strong><strong><span dir="LTR" lang="FA" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman"> </font></span></strong><strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">ها:</span></strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"> یافته ها نشان داده­اند که پروتکل خستگی عضلات مرکزی بدن موجب کاهش معنی</span><span dir="LTR" lang="FA" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman"> </font></span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">داری با اندازه اثری بزرگ در نمرات آزمون‌های تعادل ایستا، پویا و استقامت آزمودنی­ها</span><span dir="LTR" lang="FA" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman"> </font></span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">می‌شود </span><span lang="FA" style="font-family:b zar mso-ansi-language:X-NONE mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman" mso-fareast-language:X-NONE">(</span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman" mso-fareast-language:X-NONE">05/0</span><font face="Times New Roman"><span lang="FA" style="mso-ansi-language:X-NONE mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman" mso-fareast-language:X-NONE">></span><span dir="LTR" style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman" mso-fareast-language:X-NONE">P</span></font><span lang="FA" style="font-family:b zar mso-ansi-language:X-NONE mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman" mso-fareast-language:X-NONE">)</span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">.</span></font></font></p> <p> </p> <p dir="RTL" style="margin: 0in 0in 0pt text-indent: 0in"><font size="3"><font color="#000000"><strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">نتیجه</span></strong><strong><span dir="LTR" lang="FA" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman"> </font></span></strong><strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">گیری:</span></strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"> نتایج مطالعات حاضر پیشنهاد می­کند تمریناتی که باعث بهبود ثبات عضلات مرکزی و افزایش توانایی آن</span><span dir="LTR" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman">­</font></span><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt">ها در مقابله با خستگی می‌شوند، احتمالاً می­توانند توسط مربیان و توانبخشان به عنوان روشی برای جلوگیری از آسیب‌دیدگی مورد استفاده قرار گیرند.</span></font></font></p> <p> </p> <p dir="RTL" style="margin: 0in 0in 0pt text-indent: 0in"><font size="3"><font color="#000000"><strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"><span style="mso-spacerun:yes"> </span>واژ‌گان کلیدی:</span></strong><span lang="FA" style="font-family:b zar mso-bidi-font-size:12.0pt"> عضلات مرکزی بدن، خستگی، تعادل ایستا، تعادل پویا، استقامت</span><span dir="LTR" style="mso-bidi-font-size:12.0pt"><font face="Times New Roman">.</font></span></font></font></p> <p><font color="#000000"><span dir="RTL" lang="FA" style="font-family:b zar font-size:12pt mso-ansi-language:EN-US mso-ascii-font-family:"Times New Roman" mso-bidi-language:FA mso-fareast-font-family:Calibri mso-fareast-language:EN-US mso-hansi-font-family:"Times New Roman"">وصول مقاله :21/10/93 اصلاحیه نهایی:31/3/94 پذیرش:7/4/94</span></font></p> <p> </p> <p style="margin: 0in 0in 0pt text-align: justify text-indent: 0in unicode-bidi: embed direction: ltr"><font size="3"><font face="Times New Roman"><font color="#000000"><strong><em><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Background and Aim:</span></em></strong><strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman""> </span></strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Fatigue is </span><span style="mso-bidi-font-size:12.0pt">one</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">of the factors that</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">can reduce coordination and</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">muscle</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">activity. Since the</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">core muscles</span><span style="mso-bidi-font-size:12.0pt"> of the body are essential </span><span style="mso-bidi-font-size:12.0pt">to</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">create</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">a</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">stable</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">surface</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">for</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">proper limb</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">movements, core muscles</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">fatigue may affect</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">the</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">activities of</span><span style="mso-bidi-font-size:12.0pt"> human</span><span style="mso-bidi-font-size:12.0pt">, especially athletes</span><strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">.</span></strong></font></font></font></p> <p> </p> <p style="margin: 0in 0in 0pt text-align: justify text-indent: 0in unicode-bidi: embed direction: ltr"><font size="3"><font face="Times New Roman"><font color="#000000"><strong><em><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Material and Methods:</span></em></strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman""> The participants of this study were 30 female students majoring physical education. In the first session, the participants performed the balance and strength tests (static and dynamic) in the normal condition (no fatigue).</span><span style="mso-ansi-language:EN-GB mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman""> </span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">In the second session, core fatigue exercises and immediately after that, the static and dynamic balance tests were performed by the participants. In the third session, athletes participated in the core fatigue protocol and then immediately performed</span><span style="mso-bidi-font-size:12.0pt"> trunk muscle endurance tests.</span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman""> </span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt">Paired t-test was used to compare the results before and after fatigue. </span></font></font></font></p> <p> </p> <p style="margin: 0in 0in 0pt text-align: justify text-indent: 0in unicode-bidi: embed direction: ltr"><font size="3"><font face="Times New Roman"><font color="#000000"><strong><em><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Results:</span></em></strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt"> The results showed that the core muscle fatigue protocol significantly reduced </span><span style="mso-bidi-font-size:12.0pt">the scores of </span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt">the</span><span style="mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">static, dynamic</span><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt"> </span><span style="mso-bidi-font-size:12.0pt">and endurance balance tests in the participants (p<0.05). </span></font></font></font></p> <p> </p> <p style="margin: 0in 0in 0pt text-align: justify text-indent: 0in unicode-bidi: embed direction: ltr"><font size="3"><font face="Times New Roman"><font color="#000000"><strong><em><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Conclusion:</span></em></strong><strong><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman""> </span></strong><span style="background:white mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt"><span style="mso-spacerun:yes"> </span></span><span style="background:white mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt">The results of the present study suggested that the </span><span style="background:white mso-bidi-font-size:12.0pt">exercises which improve the stability of core muscles and also increase their ability to cope with fatigue can be used by trainers as a method for prevention of injury. </span><span style="mso-bidi-font-size:12.0pt"><span style="mso-spacerun:yes"> </span></span></font></font></font></p> <p> </p> <p align="left" style="margin: 0in 0in 0pt text-align: left text-indent: 0in unicode-bidi: embed direction: ltr"><font size="3"><font face="Times New Roman"><font color="#000000"><strong><em><span style="mso-bidi-font-family:"Times New Roman" mso-bidi-font-size:12.0pt mso-fareast-font-family:"Times New Roman"">Keywords:</span></em></strong><span style="mso-bidi-font-size:12.0pt"> Core muscle, Fatigue, Static balance, Dynamic balance, Endurance.</span></font></font></font></p> <p> </p> <p align="left" style="margin: 0in 0in 0pt text-align: left text-indent: 0in unicode-bidi: embed direction: ltr"><span style="mso-bidi-font-size:12.0pt"><font color="#000000" face="Times New Roman" size="3"> </font></span></p> <p><font color="#000000"><strong><span lang="EN-GB" style="font-family:times new roman,serif font-size:12pt mso-ansi-language:EN-GB mso-bidi-font-size:14.0pt mso-bidi-language:FA mso-fareast-font-family:Calibri mso-fareast-language:EN-US">Received: </span><span style="font-family:times new roman,serif font-size:12pt mso-ansi-language:EN-US mso-bidi-font-size:14.0pt mso-bidi-language:FA mso-fareast-font-family:Calibri mso-fareast-language:EN-US">Jan</span></strong><span lang="EN-GB" style="font-family:times new roman,serif font-size:12pt mso-ansi-language:EN-GB mso-bidi-font-size:14.0pt mso-bidi-language:FA mso-fareast-font-family:Calibri mso-fareast-language:EN-US"> 12, 2015<strong><span style="mso-spacerun:yes">      </span>Accepted: </strong>Jun 28, 2015</span></font></p> عضلات مرکزی بدن, خستگی, تعادل ایستا, تعادل پویا, استقامت Core muscle, Fatigue, Static balance, Dynamic balance, Endurance. 65 72 http://sjku.muk.ac.ir/browse.php?a_code=A-10-25-20&slc_lang=fa&sid=1 Farideh Babakhani فریده باباخانی Farideh_Babakhani@yahoo.com 540031947532846008275 540031947532846008275 Yes Kobra Oladghobadi کبری اولاد قبادی 540031947532846008276 540031947532846008276 No Farajollah Fatahi فرج ا.. فتاحی 540031947532846008277 540031947532846008277 No