fa تاثیر تغییر در طراحی تخت کفش بر پایداری انسان در حین راه رفتن فیزیوتراپی Physiotherapy پژوهشي Research <font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-indent: 0.35pt unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">زمینه و هدف:</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"> کفش تنها محل تماس پا با زمین است و هر تغییری در آن بر روی ثبات بدن و کنترل تعادل فرد در حین راه­رفتن اثر مستقیم می­گذارد. <a name="OLE_LINK254"></a><a name="OLE_LINK253"><span style="mso-bookmark: OLE_LINK254"><font face="B Mitra" size="2">ریسک لغزیدن و افتادن مربوط به جنس کفش، ویژگی­های سطح راه­ رفتن و طراحی هندسی تخت کفش می­باشد</font></span></a>. هدف این تحقیق سنجش تاثیر عمق­های مختلف شیار تخت کفش بر روی پایداری حین راه­رفتن بر روی دو سطح </span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt mso-ansi-language: EN-GB">خشک و لغزنده می­باشد.</span><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><o:p /></span></b></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-indent: 0.35pt unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">روش کار:</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt mso-ansi-language: EN-GB"> در این مطالعه نیمه­تجربی، 22 مرد جوان با میانگین سنی </span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">43/3</span><span lang="AR-SA" style="font-family: "Times New Roman","serif" font-size: 10pt mso-ansi-font-size: 9.0pt">±</span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">5/24 سال</span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt mso-ansi-language: EN-GB"> با کفش استاندارد آکسفورد با سه عمق متفاوت شیارهای تخت کفش بر روی دو سطح خشک و لیز راه رفتند و در کل 6 حالت مختلف آزمایش را انجام دادند.</span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"> داده­ها با استفاده از دو دستگاه آنالیز حرکت و صفحه نیرو جمع­آوری گردید.<span style="mso-spacerun: yes"><font face="B Mitra" size="2"> </font></span></span><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt mso-ansi-language: EN-GB">فرکانس نوسانات مفصل مچ پا و ضریب اصطکاک به عنوان معیارهای میزان پایداری مورد محاسبه قرار گرفتند. </span><font size="2"><font face="B Mitra"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><span style="mso-spacerun: yes"> </span></span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt mso-ansi-language: EN-GB">آزمون­ آماری مورد استفاده شامل تی­زوجی بود.<o:p /></span></font></font></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-indent: 0.35pt unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">یافته­ها:</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"> نتایج نشان داد که بر روی هر دو سطح خشک و لیز، افزایش عمق شیارهای تخت کفش منجر به افزایش ضریب اصطکاک بین کفش و سطح و کاهش نوسانات مفصل مچ پا در حین راه رفتن می­شود (05/0</span><span style="font-family: "Times New Roman","serif" font-size: 9pt mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt" dir="ltr">p</span><font face="Symbol"><span style="font-family: Symbol font-size: 9pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt mso-char-type: symbol mso-symbol-font-family: Symbol" dir="ltr"><span style="mso-char-type: symbol mso-symbol-font-family: Symbol"><</span></span><span dir="rtl"></span></font><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><span dir="rtl"></span>).<b> </b>همچنین ضریب اصطکاک بر روی سطح لیز به طور معناداری کمتر از سطح خشک بود (01/0</span><span style="font-family: "Times New Roman","serif" font-size: 9pt mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt" dir="ltr">p</span><font face="Symbol"><span style="font-family: Symbol font-size: 9pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-bidi-font-family: "B Mitra" mso-bidi-font-size: 10.0pt mso-char-type: symbol mso-symbol-font-family: Symbol" dir="ltr"><span style="mso-char-type: symbol mso-symbol-font-family: Symbol"><</span></span><span dir="rtl"></span></font><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"><span dir="rtl"></span>).<b> </b><o:p /></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-indent: 0.35pt unicode-bidi: embed direction: rtl text-justify: kashida text-kashida: 0%" dir="rtl"><b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt">نتیجه­گیری:</span></b><span lang="AR-SA" style="font-family: "B Mitra" font-size: 10pt mso-ascii-font-family: "Times New Roman" mso-hansi-font-family: "Times New Roman" mso-ansi-font-size: 9.0pt"> هدف این مطالعه یافتن عمق شیاری برای پایداری بهینه بوده و با توجه به سه عمق شیار تخت کفش مورد آزمایش، به نظر می­رسد عمق شیار 5 میلی متر برای کاهش نوسانات مفصل مچ پا و افزایش اصطکاک مناسب‌تر می­باشد. <o:p /></span></p><font face="Times New Roman" size="3"> </font> <font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: kashida text-kashida: 0%"><font size="3"><b><span style="font-family: "Times New Roman","serif"">Background:</span></b><span style="font-family: "Times New Roman","serif""> Shoes is the first point of contact between the foot and the ground in walking<span dir="rtl"></span><span lang="AR-SA" dir="rtl"><span dir="rtl"></span><font face="Times New Roman">.</font></span>Any change in that could affect the balance and postural stability. The risks associated with slipping and falling is related to the materials of footwear, surface condition, and geometric design of the shoe sole. The aim of this study was to measure the effect of different shoe sole tread groove depths on the stability during walking on dry and slippery surfaces.<o:p /></span></font></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: kashida text-kashida: 0%"><b><span style="font-family: "Times New Roman","serif""><font size="3">Methods:</font></span></b><span style="font-family: "Times New Roman","serif""><font size="3"> In this semi-experimental study, 22 healthy young men with average age 24.5±3.43 years<span style="mso-spacerun: yes"><font face="Times New Roman"> </font></span></font><font size="3">wore the oxford standard shoe and walked on two different surfaces (dry and slippery) with three different groove depths (1, 2.5 and 5 mm). In fact, there were six different test conditions. Data was collected by the VICON Motion Analysis system and Force plate set. The Paired T-test was performed to study the effects of groove depth and surface contamination on the Coefficient of Friction (COF) and Fluctuations Rate of Ankle (FRA).<o:p /></font></span></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: kashida text-kashida: 0%"><font size="3"><b><span style="font-family: "Times New Roman","serif"">Results:</span></b><span style="font-family: "Times New Roman","serif""> The results showed that on slippery and dry surfaces, increase in groove depths leads to increase of COF and decrease of FRA (p<0.05). Also values of COF on slippery surface were less than dry surface significantly (p<0.01). <o:p /></span></font></p><font face="Times New Roman" size="3"> </font><p class="MsoNormal" style="margin: 0in 0in 0pt text-align: justify line-height: normal text-justify: kashida text-kashida: 0%"><font size="3"><b><span style="font-family: "Times New Roman","serif"">Conclusion:</span></b><span style="font-family: "Times New Roman","serif""> The aim of this study was to find the groove depth which has the optimal stability. In our study, the deepest groove (5 mm) was better for reduction of FRA and increase of COF during walking on slippery and dry surfaces.<o:p /></span></font></p><font face="Times New Roman" size="3"> </font> تعادل، لغزندگی، عمق شیار تخت کفش، شرایط سطح، پایداری. Balance, Slippery, Sole tread groove depth, Surface contamination, Stability. 46 53 http://rjms.iums.ac.ir/browse.php?a_code=A-10-1-1388&slc_lang=fa&sid=1 Mansour Ziaei منصور ضیائی 3900319475328460022801 3900319475328460022801 Yes Kermanshah University of Medical Sciences دانشگاه علوم پزشکی کرمانشاه Seyed Farhad Tabatabai Ghomshe سید فرهاد طباطبایی قمشه 3900319475328460022802 3900319475328460022802 No University of Social Welfare and Rehabilitation Sciences دانشگاه علوم بهزیستی و توانبخشی Hamid Reza Mokhtarinia حمیدرضا مختاری نیا 3900319475328460022803 3900319475328460022803 No University of Social Welfare and Rehabilitation Sciences دانشگاه علوم بهزیستی و توانبخشی Maryam Maghsoudipor مریم مقصودی پور 3900319475328460022804 3900319475328460022804 No University of Social Welfare and Rehabilitation Sciences دانشگاه علوم بهزیستی و توانبخشی Mostafa Hamzeiyan Ziyarani مصطفی حمزئیان زیارانی 3900319475328460022805 3900319475328460022805 No Institute for Higher Education of Kar, Qazvin موسسه آموزش عالی کار قزوین