Iranian Journal of Ergonomics
مجله ارگونومی
Iran J Ergon
Medical Sciences
http://journal.iehfs.ir
1
admin
1735-1960
2345-5365
8
10.53208/IJE
14
13
fa
jalali
1393
12
1
gregorian
2015
3
1
2
4
online
1
fulltext
fa
برآورد نیروهای وارد به کمر در وظایف بلند کردن دستی بار با استفاده از نرمافزار 3DSSPP
Estimation of forces exerted on the lower back in manual load lifting using 3DSSPP software
سایر موارد
Other Cases
پژوهشي
Research
<p class="MsoNormal" dir="rtl" style="margin-bottom: 0.0001pt text-align: justify line-height: normal background: none repeat scroll 0% 0% rgb(217, 217, 217) direction: rtl unicode-bidi: embed"><b><span lang="FA">مقدمه: </span></b><span lang="FA">بلند کردن دستی بار رایجترین و پراسترسترین
فعالیت حمل دستی بار محسوب میشود که از نظر فشار بیومکانیکی وارد بر بدن و بهویژه
ستون فقرات در رتبه نخست قرار دارد. مطالعه حاضر با هدف تعیین میزان ناراحتیهای اسکلتی
</span><span lang="FA">–</span><span lang="FA"> عضلانی و تخمین بار مکانیکی وارده به کمر
در کارگران دارای فعالیت بلند کردن دستی بار صورت پذیرفت. </span></p>
<p class="MsoNormal" dir="rtl" style="margin-bottom: 0.0001pt text-align: justify line-height: normal background: none repeat scroll 0% 0% rgb(217, 217, 217) direction: rtl unicode-bidi: embed"><b><span lang="FA">مواد و روش ها:</span></b><span lang="FA"> این مطالعه مقطعی بر روی 120 نفر از کارگران
دارای وظیفه بلند کردن دستی بار در 7 صنعت شهر شیراز انجام گرفت. برای تعیین شیوع اختلالات
اسکلتی </span><span lang="FA">–</span><span lang="FA"> عضلانی از پرسشنامه نوردیک و برای برآورد
نیروهای وارد به کمر طی انجام وظایف بلند کردن بار از نرمافزار </span><span dir="ltr"></span><span dir="ltr"></span><span dir="ltr" style="font-size: 10pt"><span dir="ltr"></span><span dir="ltr"></span>3DSSPP</span><span dir="rtl"></span><span dir="rtl"></span><span><span dir="rtl"></span><span dir="rtl"></span>
<span lang="FA">استفاده گردید. تجزیه و تحلیل دادهها با استفاده از نرمافزار </span></span><span dir="ltr" style="font-size: 10pt">SPSS</span><span dir="rtl"></span><span dir="rtl"></span><span lang="FA"><span dir="rtl"></span><span dir="rtl"></span> (نسخه 19) صورت پذیرفت.</span></p>
<p class="MsoNormal" dir="rtl" style="margin-bottom: 0.0001pt text-align: justify line-height: normal background: none repeat scroll 0% 0% rgb(217, 217, 217) direction: rtl unicode-bidi: embed"><b><span lang="FA">یافته ها:</span></b><span lang="FA"> <span style="color: black">نتایج نشان
داد که بیشترین فراوانی ناراحتیهای اسکلتی </span></span><span lang="FA">–</span><span lang="FA">
عضلانی مربوط به اندام کمر میباشد (68/3% ). نتایج ارزیابی با نرمافزار </span><span dir="ltr"></span><span dir="ltr"></span><span dir="ltr" style="font-size: 10pt"><span dir="ltr"></span><span dir="ltr"></span>3DSSPP</span><span dir="rtl"></span><span dir="rtl"></span><span lang="FA"><span dir="rtl"></span><span dir="rtl"></span> نیز مشخص کرد
که نیروهای فشاری و برشی وارده به دیسک </span><span dir="ltr" style="font-size: 10pt">L5/S1</span><span dir="rtl"></span><span dir="rtl"></span><span lang="FA"><span dir="rtl"></span><span dir="rtl"></span> به ترتیب در 17/5 و 10/8 درصد<span> </span>از کارگران مورد مطالعه بالاتر از حد مجاز بوده
است. شیوع کمردرد در سطوح مختلف نیروهای فشاری و برشی وارد به دیسک دارای اختلاف معنیدار
نبود (p>0/05</span><span dir="ltr" style="font-size: 10pt"> </span><span dir="rtl"></span><span dir="rtl"></span><span lang="FA"><span dir="rtl"></span><span dir="rtl"></span>).
شاید این موضوع محدودیت این روش در ارزیابی فراگیر بار وارده به ستون فقرات باشد</span><span lang="FA">.</span></p>
<p class="MsoNormal" dir="rtl" style="margin-bottom: 0.0001pt text-align: justify line-height: normal background: none repeat scroll 0% 0% rgb(217, 217, 217) direction: rtl unicode-bidi: embed"><b><span lang="FA">نتیجه گیری:</span></b><span lang="FA"> شیوع اختلالات اسکلتی- عضلانی بهویژه کمردرد
در افراد مورد مطالعه بالاست. سطح ریسک ناشی از نیروهای فشاری و برشی در درصد کمی از
کارگران مورد مطالعه از حد مجاز فراتر رفته است. نرمافزار </span><span dir="ltr"></span><span dir="ltr"></span><span dir="ltr" style="font-size: 10pt"><span dir="ltr"></span><span dir="ltr"></span>3DSSPP</span><span dir="rtl"></span><span dir="rtl"></span><span><span dir="rtl"></span><span dir="rtl"></span>
<span lang="FA">میتواند در ارزیابی فشار وارده به ستون فقرات محدودیتهایی داشته باشد.</span></span><span lang="AR-SA"> </span></p>
<p class="MsoNormal" dir="rtl" style="margin-bottom: 0.0001pt text-align: justify line-height: normal background: none repeat scroll 0% 0% rgb(217, 217, 217) direction: rtl unicode-bidi: embed"><b><span lang="FA"></span></b><w:view><w:trackmoves><w:trackformatting><w:punctuationkerning><w:validateagainstschemas><w:donotpromoteqf><w:lidthemecomplexscript>
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<p style="margin-bottom: 0.0001pt text-align: justify background: none repeat scroll 0% 0% rgb(217, 217, 217)" class="MsoNormal"><b><span>Introduction:</span></b><span> Manual load lifting is the most common and most
stressful activity in manual handling of loads that imposes the highest
possible amount of biomechanical pressure on the body, particularly on the
spine. The present study was conducted to determine the prevalence of
musculoskeletal disorders and to estimate the mechanical force exerted on the
lower back in workers responsible for manual load lifting.</span></p>
<p style="margin-bottom: 0.0001pt text-align: justify background: none repeat scroll 0% 0% rgb(217, 217, 217)" class="MsoNormal"><b><span>Material and Methods<i>:</i></span></b><span> The present
cross-sectional study was conducted on 120 workers responsible for manual load
lifting activities in 7 industrial settings in the city of Shiraz. The Nordic Musculoskeletal
Questionnaire (NMQ) was used for determining the prevalence of musculoskeletal
disorders and the 3DSSPP software was used to estimate the forces exerted on
the lower back during load lifting. Data were then analyzed in
SPSS-19.Findings: The results showed that lower back problems constitute the
most prevalent musculoskeletal disorder (68.3%). Evaluations conducted in
3DSSPP showed that in 17.5% of the cases, compressive forces, and in 10.8% of the
cases, shearing forces exerted on the L5-S1 disc were higher in the workers
than the permissible levels. There were no significant differences between the
rate of the prevalence of lower back pain at different levels of compressive
and shearing forces exerted on the disc (p>0/05).</span></p>
<p style="margin-bottom: 0.0001pt text-align: justify background: none repeat scroll 0% 0% rgb(217, 217, 217)" class="MsoNormal"><b><span>Results:</span></b><span> This finding might indicate the limitations of the
method used in this study for conducting a comprehensive assessment of loads
exerted on the spine.</span></p>
<p style="margin-bottom: 0.0001pt text-align: justify background: none repeat scroll 0% 0% rgb(217, 217, 217)" class="MsoNormal"><b><span>Conclusion:</span></b><span> The prevalence of musculoskeletal disorders, in particular
lower back pain, was estimated to be high among the subjects studied. The risk
levels of compressive and shearing forces exceeded the permissible amount in a
low percentage of the workers studied. The 3DSSPP software might have certain
limitations in the assessment of the pressure exerted on the spine.</span><span></span></p>
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نرمافزار3DSSPP , بلند کردن دستی بار, کمردرد
3DSSPP software, Manual load lifting, Low Back pain
25
31
http://journal.iehfs.ir/browse.php?a_code=A-10-30-2&slc_lang=fa&sid=1
Naeimeh
Asadi
نعیمه
اسدی
asadi_n238@yahoo.com
10031947532846002382
10031947532846002382
No
shiraz- kooye zahra- School of Health- Department of occupational health
شیراز- کوی زهرا- دانشکده بهداشت- گروه بهداشت حرفه ای
Alireza
Choobineh
علیرضا
چوبینه
alrchoobin@sums.ac.ir
10031947532846002383
10031947532846002383
Yes
Professor, Research Center for Health Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
استاد، مرکز تحقیقات علوم بهداشتی، دانشگاه علوم پزشکی شیراز، شیراز، ایران
Sareh
Keshavarzi
ساره
کشاورزی
skeshavarz@sums.ac.ir
10031947532846002384
10031947532846002384
No
shiraz- kooye zahra- School of Health- Department of epidemiology
شیراز- کوی زهرا- دانشکده بهداشت- گروه اپیدمیولوژی
Hadi
Daneshmandi
هادی
دانشمندی
daneshmand@sums.ac.ir
10031947532846002385
10031947532846002385
No
shiraz- kooye zahra- School of Health- Department of Ergonomics
شیراز- کوی زهرا- دانشکده بهداشت- گروه ارگونومی