fa اثر طول عمر سه نوع زیره پوتین عملیاتی بر نیروی عکس العمل زمین در طی دویدن بیومکانیک ورزشی sport biomechanic پژوهشي Research <b><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black">مقدمه و هدف:</span></span></span></b><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"> دویدن یکی از فعالیت&shy;های مهم برای نظامیان می&shy;باشد که پوتین&shy;ها نقش موثر در این فعالیت دارند</span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:">. هدف از پژوهش حاضر بررسی اثر طول عمر سه نوع زیره پوتین عملیاتی بر </span></span><span lang="FA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:">نیروی عکس العمل زمین </span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:">در طی دویدن بود.</span></span><span lang="FA" style="font-size:9.0pt"><span style="font-family:"B Lotus""></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span style="direction:rtl"><span style="unicode-bidi:embed"><span sans-serif="" style="font-family:Calibri,"><b><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black">روش&shy;شناسی</span></span></span></b><b><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:">:</span></span></b><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"> پژوهش حاضر از نوع کارآزمایی بالینی بود. 15 دانشجوی پسر سالم <span style="background:lime">(20-25 سال)</span> از سه نوع زیره پوتین متفاوت استفاده شده و جدید استفاده کردند. </span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">با استفاده از صفحه نیرو برتک با ابعاد (60&times;40 سانتی</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">&shy;</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">متر مربع) نیروهای عکس&shy;العمل زمین در جهت</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">&shy;</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">های عمودی، قدامی-خلفی و داخلی-خارجی هنگام دویدن اندازه</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">&shy;</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt">گیری شد</span></span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:">. جهت تحلیل&shy;های آماری از آنالیز واریانس دوسویه در سطح معنی&shy;داری 05/0 استفاده شد. </span></span><span lang="AR-SA" style="font-size:9.0pt"><span b="" lotus="" style="font-family:"><span style="color:black"><span style="position:relative"><span style="top:.5pt"></span></span></span></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:115%"><span style="text-autospace:none"><span style="direction:rtl"><span style="unicode-bidi:embed"><span sans-serif="" style="font-family:Calibri,"><b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">یافته&shy;ها:</span></span></span></span></b> <span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">نتایج نشان داد اثر عامل طول عمر در نیروی داخلی -خارجی مرحلۀ تماس پاشنه (001/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 407/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">)، نیروی داخلی -خارجی مرحلۀ هل دادن (001/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 674/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">)، زمان رسیدن به اوج محور داخلی </span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span arial="" style="font-family:">&ndash;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:"> خارجی مرحله هل دادن (001/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 394/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) و زمان رسیدن به اوج محور قدامی </span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span arial="" style="font-family:">&ndash;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:"> خلفی مرحله هل دادن (031/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 226/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) از نظر آماری معنادار بود. علاوه بر این نتایج نشان داد اثر عامل گروه در نیروی عمودی عکس العمل زمین (027/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 163/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) و زمان رسیدن به اوج محور قدامی </span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span arial="" style="font-family:">&ndash;</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:"> خلفی در مرحله تماس پاشنه پا (035/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 150/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) تفاوت معناداری داشت. اثر تعاملی زمان و گروه در نیروی عمودی عکس العمل زمین در مرحله تماس پاشنه پا (001/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 404/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) و </span></span></span></span><span lang="FA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">نیروی</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:"> داخلی-خارجی در مرحلۀ هل دادن (014/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">P</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">؛ 272/0=</span></span></span></span><span dir="LTR" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">d</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">) دارای اختلاف معناداری بود.</span></span></span></span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:115%"><span style="text-autospace:none"><span style="direction:rtl"><span style="unicode-bidi:embed"><span sans-serif="" style="font-family:Calibri,"><b><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">بحث و نتیجه&shy;گیری نهایی:</span></span></span></span></b> <span lang="AR-SA" style="font-size:9.0pt"><span style="background:lime"><span style="line-height:115%"><span b="" lotus="" style="font-family:">نتایج پژوهش نشان داد در پوتین&shy;های نظامی استفاده شده نیروی عمودی عکس العمل زمین، نیروی داخلی-خارجی در مرحلۀ تماس پاشنه، زمان رسیدن به اوج نیروی داخلی-خارجی عکس العمل&shy;زمین بطور معناداری بالا بوده است به طوری که افزایش این مقدار می&shy;تواند با آسیب&shy;های شکستگی ناشی از فشار و درد کشککی رانی مرتبط باشد. همچنین نتایج این مطالعه نشان می&shy;دهد که نوع پوتین مورد استفاده می&shy;تواند در پیشگیری از آسیب&shy;های اندام تحتانی موثر باشد از طرف دیگر استفاده از پوتین عملیاتی جدید برای نظامیان پیشنهاد می&shy;گردد</span></span></span></span><span lang="AR-SA" style="font-size:9.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:">.</span></span></span><span lang="AR-SA" style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:"B Lotus""></span></span></span></span></span></span></span></span></span><br> &nbsp; <span style="font-size:11pt"><span style="line-height:normal"><span style="text-autospace:none"><span sans-serif="" style="font-family:Calibri,"><b><span style="font-size:9.0pt"><span arial="" style="font-family:">Background and Aims</span></span></b><b><span style="font-size:9.0pt"><span arial="" style="font-family:">:</span></span></b><span style="font-size:9.0pt"><span arial="" style="font-family:"> Running is one of the most important activities for soldiers, and boots play an effective role in this activity. The aim of the present study was to investigate the effects of three types of military boots mileage on ground reaction force variables during running.</span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span style="text-autospace:none"><span sans-serif="" style="font-family:Calibri,"><b><span style="font-size:9.0pt"><span arial="" style="font-family:">Materials and Methods</span></span></b><b><span style="font-size:9.0pt"><span arial="" style="font-family:">:</span></span></b><span style="font-size:9.0pt"><span arial="" style="font-family:"> The current research was a clinical trial. 15 healthy male students (<span style="background:lime">20-25 years old</span>) used three different types of used and new boots. Using Bartec force plate with dimensions (60 x 40 cm²), ground reaction forces were measured in vertical (Fz), anterior-posterior (Fy) and medio-lateral (Fx) directions while running at constant speed. Two-way ANOVA was used for statistical analysis at a significance level of 0.05.</span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span style="text-autospace:none"><span sans-serif="" style="font-family:Calibri,"><b><span style="font-size:9.0pt"><span arial="" style="font-family:">Results:</span></span></b><span style="font-size:9.0pt"><span arial="" style="font-family:"> <span style="background:lime">Results demonstrated significant main effects of &quot;Time&quot; for FX_HC (P=0.001, d=0.407), FX_PO (P=0.001, d=0.674), TTPFX_PO (P=0.001, d=0.394) and TTPFY_PO (P=0.031, d=0.226). Findings showed significant main effect of group for FZ_HC (P=0.027, d=0.163) and TTPFY_HC (p=0.035, d=0.150). Furthermore, significant group-by-time interactions was found for FZ_HC (P=0.001, d=0.404) and FX_PO (P=0.014, d=0.272).</span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span style="text-autospace:none"><span sans-serif="" style="font-family:Calibri,"><b><span style="font-size:9.0pt"><span arial="" style="font-family:">Conclusion:</span></span></b><span style="font-size:9.0pt"><span arial="" style="font-family:"> <span style="background:lime">The results of this research showed that using military boots, the vertical ground reaction force, the medio-lateral force at heel contact and the peak medio-lateral force were increased. The increase of this value can be related to fracture injuries caused by pressure and patella femoral pain. The results of this study showed that the type of boots can be effective in preventing lower limb injuries. Therefore, using new operational boots is suggested for the military application.</span></span></span></span></span></span></span><br> &nbsp; پوتین, پلی اورتان, پلی اورتان ترموپلاستیک, نیروی عکس العمل زمین, دویدن boots, polyurethane, thermoplastic polyurethane, ground reaction force, running 0 0 http://jsmt.khu.ac.ir/browse.php?a_code=A-10-1946-15&slc_lang=fa&sid=1 Milad Piran Hamlabadi میلاد پیران حمل ابادی miladpiran75@gmail.com 10031947532846004537 10031947532846004537 No University of Mohaghegh Ardabili دانشگاه محقق اردبیلی AmirAli Jafarnezhadgero امیرعلی جعفرنژادگرو amiralijafarnezhad@gmail.com 10031947532846004538 10031947532846004538 Yes University of Mohaghegh Ardabili دانشگاه محقق اردبیلی Hamed Naghizadeh حامد نقی زاده hamednaghizadeh1396@gmail.com 10031947532846004539 10031947532846004539 No Islamic Azad University دانشگاه آزاد اسلامی واحد اردبیل