The effects of ergonomic interventions in manual activities to reduce musculoskeletal disorders in manual activities by ManTRA

Sara Dehnavi, Abdollah Vahedi, Majid Motamedzade torghabe, Abbas Moghimbeigi
2017 Journal of Ergonomics  
‫تجزیـ‬ ‫ـا:‬ ‫هـ‬ ‫يافته‬ 0/043( ‫ـپ‬ ‫چـ‬ ‫بازوی‬ ‫و‬ ‫ـانه‬ ‫شـ‬ ،)P = 0/012( ‫ـت‬ ‫راسـ‬ ‫ـازوی‬ ‫بـ‬ ‫و‬ ‫ـانه‬ ‫شـ‬ )P = 0/012( ‫ـردن‬ ‫وگـ‬ ‫ـر‬ ‫سـ‬ ‫ـی‬ ‫نواحـ‬ ‫در‬ ‫ـه‬ ‫مداخلـ‬ ‫ـت‬ ‫راسـ‬ ‫ـوی‬ ‫وزانـ‬ ‫ران‬ ،)P = 0/027( ‫ـپ‬ ‫چـ‬ ‫ومچ‬ ‫ـت‬ ‫دسـ‬ ،)P = 0/028( ‫ـت‬ ‫راسـ‬ ‫ومچ‬ ‫ـت‬ ‫دسـ‬ ،)P = 0/003( ‫ـر‬ ‫کمـ‬ ،)P = 0/0028( ‫ـپ‬ ‫چـ‬ ‫پا‬ ‫ـاق‬ ‫وسـ‬ ‫ـا‬ ‫پـ‬ ،)P = 0/012( ‫ـت‬ ‫راسـ‬ ‫پا‬ ‫ـاق‬ ‫وسـ‬ ‫ـا‬ ‫پـ‬ ،)P = 0/005( ‫ـپ‬ ‫چـ‬ ‫زانوی‬ ‫و‬ ‫ران‬ ،)P = 0/005 ( ‫بازو/مــچ/‬
more » ... 05 ( ‫بازو/مــچ/‬ ‫نواحــی‬ ‫در‬ ‫داری‬ ‫معنــی‬ ‫ارتباط‬ ‫نیــز،‬ ‫تجمعی‬ ‫نمره‬ ‫ازنظــر‬ ‫اســت.‬ ‫داشته‬ ‫وجــود‬ ‫داری‬ ‫معنــی‬ ‫ارتباط‬ )P = ‫ـد.‬ ‫شـ‬ ‫مشاهده‬ ‫ـه‬ ‫مداخلـ‬ ‫از‬ ‫ـد‬ ‫وبعـ‬ ‫قبل‬ )P = 0/001( ‫ـانه/گردن‬ ‫شـ‬ ‫و‬ )P = 0/001( ‫ـت‬ ‫دسـ‬ ‫توانــد‬ ‫می‬ ‫ارگونومــی‬ ‫مداخــالت‬ ‫کــه‬ ‫گفــت‬ ‫تــوان‬ ‫می‬ ‫مطالعــه‬ ‫ایــن‬ ‫هــای‬ ‫یافته‬ ‫اســاس‬ ‫بــر‬ ‫گیــری:‬ ‫نتیجه‬ ‫ـده‬ ‫کننـ‬ ‫ـاد‬ ‫ایجـ‬ ‫ـای‬ ‫فاکتورهـ‬ ‫ـک‬ ‫ریسـ‬ ‫ـش‬ ‫کاهـ‬ ‫و‬ ‫ـدن‬ ‫بـ‬ ‫ـف‬ ‫مختلـ‬ ‫های‬ ‫ـمت‬ ‫قسـ‬ ‫در‬ ‫درد‬ ‫ـدت‬ ‫شـ‬ ‫ـزان‬ ‫میـ‬ ‫ـش‬ ‫کاهـ‬ ‫ـث‬ ‫باعـ‬ ‫شــود.‬ ‫کار‬ ‫محیــط‬ ‫در‬ ‫تجمعــی‬ ‫های‬ ‫آســیب‬ ‫پزشکی‬ ‫علوم‬ ‫دانشگاه‬ ‫برای‬ ‫نشر‬ ‫حقوق‬ ‫تمامی‬ ‫است.‬ ‫محفوظ‬ ‫همدان‬ ManTRA ‫ارگونومیکی‬ ‫مداخالت‬ ‫دستی‬ ‫وظایف‬ Body map ‫پژوهشی‬ ‫مقاله‬ 1395 ‫زمستان‬ ،4 ‫شماره‬ ،4 ‫دوره‬ ‫ارگونومی‬ ‫مجله‬ ‫مقدمه‬ ‫در‬ ‫ناراحتــی‬ ‫و‬ ‫درد‬ ‫احســاس‬ ‫کــه‬ ‫انــد‬ ‫داده‬ ‫نشــان‬ ‫تحقیقــات‬ ‫مشــکالت‬ ‫از‬ ‫عضالنــی‬ ‫اســکلتی‬ ‫دســتگاه‬ ‫گوناگــون‬ ‫های‬ ‫قســمت‬ ‫اســکلتی‬ ‫اختــالالت‬ ‫و‬ .]1[ ‫اســت‬ ‫کار‬ ‫محیــط‬ ‫در‬ ‫عمــده‬ WMSDS: Work-related( ‫کار‬ ‫بــا‬ ‫مرتبــط‬ ‫عضالنــی‬ ‫دســت‬ ‫از‬ ‫عامــل‬ ‫تریــن‬ ‫عمده‬ ،)Musculoskeletal Disorders ‫انســانی‬ ‫های‬ ‫آســیب‬ ‫و‬ ‫هــا‬ ‫هزینه‬ ‫افزایــش‬ ‫کار،‬ ‫زمــان‬ ‫رفتــن‬ ‫ـی‬ ‫عضالنـ‬ ‫ـکلتی‬ ‫اسـ‬ ‫ـالالت‬ ‫اختـ‬ .]2[ ‫ـد‬ ‫آینـ‬ ‫می‬ ‫ـمار‬ ‫شـ‬ ‫ـه‬ ‫بـ‬ ‫کار‬ ‫ـروی‬ ‫نیـ‬ ‫زمــان‬ ‫طــول‬ ‫در‬ ‫کــه‬ ‫هســتند‬ ‫تجمعــی‬ ‫های‬ ‫آســیب‬ ،)MSDS( .]3[ ‫شــود‬ ‫می‬ ‫ایجــاد‬ ‫عضالنــی‬ ‫اســکلتی‬ ‫کارهــای‬ ‫انجــام‬ ‫اثــر‬ ‫در‬ ‫جهــان‬ ‫در‬ ‫افــزون‬ ‫روز‬ ‫و‬ ‫شــایع‬ ‫مشــکالت‬ ‫از‬ ‫یکــی‬ ‫اختــالالت‬ ‫ایــن‬ ‫اعصــاب‬ ‫و‬ ‫مفاصــل‬ ‫هــا،‬ ‫تاندون‬ ‫هــا،‬ ‫ماهیچه‬ ‫کــه‬ ‫باشــد‬ ‫می‬ ‫امــروز‬ ‫ـار‬ ‫فشـ‬ ‫ـه‬ ‫کـ‬ ‫ـد‬ ‫افتـ‬ ‫می‬ ‫ـاق‬ ‫اتفـ‬ ‫ـی‬ ‫زمانـ‬ ‫و‬ ‫ـد‬ ‫دهـ‬ ‫می‬ ‫ـرار‬ ‫قـ‬ ‫ـر‬ ‫تأثیـ‬ ‫ـت‬ ‫تحـ‬ ‫را‬ ‫ظرفیــت‬ ‫از‬ ‫بیشــتر‬ ‫عضالنــی‬ ‫اســکلتی‬ ‫بافتهــای‬ ‫بــه‬ ‫شــده‬ ‫اعمــال‬ ‫ایجــاد‬ ‫فاکتورهــای‬ ‫ریســک‬ ‫از‬ ‫یکــی‬ .]6-4[ ‫باشــد‬ ‫بافــت‬ ‫تحمــل‬ ‫ـت،‬ ‫اسـ‬ ‫کار‬ ‫ـط‬ ‫محیـ‬ ‫در‬ ‫ـتی‬ ‫دسـ‬ ‫ـای‬ ‫هـ‬ ‫فعالیت‬ ‫ـالالت،‬ ‫اختـ‬ ‫ـن‬ ‫ایـ‬ ‫ـده‬ ‫کننـ‬ ‫بوســیله‬ ‫نیــرو‬ ‫اعمــال‬ ‫نیازمنــد‬ ‫کــه‬ ‫هایــی‬ ‫فعالیت‬ ‫انــواع‬ ‫بــه‬ ‫کــه‬ Abstract Introduction: Work-related Musculoskeletal Disorders (WMSDs) occur when the pressure that applied to musculoskeletal tissue is more than tissue tolerant capabilities. This study aimed at assessing the risk factors that cause musculoskeletal disorders associated with manual tasks, using ManTRA, and conducting an ergonomic intervention program (educational engineering) among workers in the printing industry. Methods: In this interventional case-control study, 40 workers, who performed manual tasks, (20 in the case group and 20 in the control group) were chosen and investigated. Nordic Body Map was used to determine the intensity and position of pain in different parts of the body. The ManTRA method was performed to evaluate cumulative scores in four regions of the body (wrist/hand/arm, shoulder/neck, back, and lower limb) for each worker before and after the intervention. Data analysis was done using the SPSS software. Results: Data analysis showed that mean intensity of pain in the control group before and after the intervention in various regions of the body, such as head/neck (P = 0.012), right shoulder/arm (P = 0.012), left shoulder/arm (P = 0.043), back (P = 0.003), right hand/ wrist (P = 0.028), left hand/wrist (P = 0.027), right knee/hip (P = 0.005), left knee/hip (P = 0.005), right leg (P = 0.012) and left leg (P = 0.028) were significant. Cumulative score was also significant in body regions such as arm/wrist/hand (P = 0.001) and shoulder/ neck (P = 0.001) before and after the interventional program. Conclusions: On the basis of the findings of this study, it could be noted that the ergonomic interventional program was effective for reducing the intensity of pain in various regions of the body and risk factors causing cumulative damage at the workplace.
doi:10.21859/joe-04048 fatcat:yqeqmd54qrgi7ntlo474qfyjda