Determining Changes in Electromyography Indices when Measuring Maximum Acceptable Weight of Lift in Iranian Male Students

Abadi, AR; Mazloumi, Adel; Saraji, Gebraeil Nasl; Zeraati, Hojjat; Hadian, Mohammad-Reza; Jafari, Amir

doi:10.31661/jbpe.v8i1mar.443

Cited by 4 publications

(6 citation statements)

References 22 publications

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“…Considering the results obtained on the high preva-lence of musculoskeletal disorders, especially low back disorders in women workers, it is necessary to perform risk assessments on manual load lifting tasks with valid methods based on anthropometric information and physiological characteristics. Salehi Sahl Abadi et al (27), in a study in 2018 aimed at determining the changes in electromyographic indicators when measuring the maximum acceptable weight lifting load in Iranian students, concluded that if muscle activity is more than 70% of maximum voluntary muscle contraction. The weights in the SNOOK tables, which are one of the methods for evaluating manual load lifting, should be revised (27).…”

Section: Discussionmentioning

confidence: 99%

The Risk Assessment of Low Back Pain Based on Allowable Weight Limits for Manual Lifting in Iranian Women Workers

Afshari

Mojaddam

Nourollahi

2020

Jundishapur J Health Sci

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Background: Manual load lifting is one of the most important risk factors for musculoskeletal disorders, including occupational low back pain. These disorders are common in women workers who perform manual load lifting and displacement tasks at the workplace. Objectives: To determine the level of musculoskeletal disorders and to evaluate the recommended limits of manual load lifting in women workers using WISHA checklist and ACGIH TLV, the recommended limits of Iran, and compare the results of two methods. Methods: This cross-sectional study was conducted on 100 women workers who performed manual loading tasks in 2018. Nordic questionnaire was used to determine the prevalence of musculoskeletal disorders, and two methods, WISHA checklist and ACGIH TLV, were used to determine the recommended allowable limits for manual load lifting. Results: The results of the prevalence assessment of musculoskeletal disorders showed that most of the musculoskeletal disorders were in the low back (55%) in the past 12 months. The results of the assessment of the allowable lifting limits also showed that 8% of women in the WISHA checklist method and 31% in the ACGIH TLV method were at risk for low back injuries. The kappa coefficient test (0.031) also showed that there is a poor and insignificant agreement between the two methods of WISHA checklist and ACGIH TLV in determining the allowable limits for manual lifting. Conclusions: The results of this study showed a poor agreement between the WISHA checklist and ACGIH TLV in determining the allowable limits for manual lifting, which suggest that the two methods are not mutually exclusive. Hence, owing to the increasing presence of women in various occupations and raising the hand load-lifting and, naturally increasing occupational low back pain among them, it is necessary that in a comprehensive study, the allowable limits of lifting loads according to anthropometric and physiological characteristics of Iranian women, prepare and compile according to a comprehensive instruction.

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Section: Discussionmentioning

confidence: 99%

The Risk Assessment of Low Back Pain Based on Allowable Weight Limits for Manual Lifting in Iranian Women Workers

Afshari

Mojaddam

Nourollahi

2020

Jundishapur J Health Sci

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“…6. Based on the use of the existing walker and the redesign of the walker, a decrease in compression value was obtained on the L5S1 where the use of the existing walker provided compression of 3568 N and the use of the redesigned walker provided compression of 1985 N, where the allowable load limit was 3400 N [28]. The posture when using the existing walker and redesign walker is shown in Fig.…”

Section: Fig 4 Walker Redesignmentioning

confidence: 99%

Redesign walker for children with diplegic cerebral palsy using TRIZ method

Laksana¹,

Setyanto²,

Herdiman³

2021

j. sist. manaj. ind.

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Children with cerebral palsy at rehabilitation centers had difficulty performing walking rehabilitation with the existing walker. The resulted in children with cerebral palsy feeling dissatisfied with existing walkers, and this dissatisfaction resulted in their interest in ongoing rehabilitation. The existing walker does not accommodate the needs of cerebral palsy children, resulting in lousy form and dissatisfaction when using a walker for rehabilitation and reduce their interest in rehabilitation. Therefore it is necessary to redesign the walker to prevent bad form and increase the satisfaction level of children with cerebral palsy. The QUEST 2.0 questionnaire was used as a reference for designing. Based on the dimensions from the QUEST 2.0 questionnaire, the walker design criteria were determined. Then use the TRIZ method to resolve any technical contradictions that occur at the design stage. Assistive device

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“…[ 1 ] Manual handling is defined as any activity that requires a person to use force to push, pull, lift, lower, carries, or holds an object. [ 2 ] Occupational tasks in the printing industry that are considered ergonomically, include Manually carrying newspaper packages, repetitive movements of upper limb associated with paper cutting machines, cleaning and preparing the printing machine, embedding the papers and maintaining the machines, which usually puts a person in a difficult situation causing musculoskeletal damages. [ 1 3 ]…”

Section: Introductionmentioning

confidence: 99%

“…Work-related MSDs (WMSDS) can cause productivity reduction, decrease work quality,[ 10 ] and increase in absenteeism. [ 11 ] Evidence has shown that reducing and preventing musculoskeletal problems is an important global priority. [ 12 ] In assessing MSDs, self-report questionnaires[ 13 ] are used as a tool to collect data, with The Nordic Musculoskeletal Questionnaire (NMQ) as the most known.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of training program in manual material handling

Jari,

Niazmand-Aghdam,

Mazhin

et al. 2022

Journal of Education and Health Promotion

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BACKGROUND: Even in an era of automation and digitalization, Manual Material Handling (MMH) can be called the most common industrial task. The aim of this study was to evaluate the prevalence of musculoskeletal disorders (MSDs) induced by manual handling tasks on the workers of a printing factory in Tehran in 2017 and then to evaluate the effectiveness of a training intervention based on health promotion. MATERIALS AND METHODS: This study had quasi experimental design and was conducted on 40 men. First, demographic data were collected and the Nordic questionnaire was used to determine the prevalence of MSDs in workers. Then, MMH tasks were assessed using Manual Handling Assessment Chart (MAC). A short training course was designed to promote health. Finally, the same MMH tasks were re-evaluated 3 months after the training intervention. RESULTS: Among the various tasks, the highest prevalence of work-related MSDs (WMSDs) was observed in the lower back (77.5%) and shoulder (62.5%). Based on the final scores of the MAC method, the jobs that received the highest scores were cutting (individual lifting), with 22 scores and action level “immediately necessary,” cutting (individual load carrying), with 15 scores with action level “urgently needed.” Arranging the forms (individual lifting) received a similar score. After the training intervention, the estimated risk level reduced by 12, 9, and 6 points, respectively, reaching a safe action level, i.e., “necessary in the future.” CONCLUSION: The results demonstrated that educational interventions might be equally effective in low-technology work environments. More in general, the MAC method can be used to make informed planning of educational interventions against WMSDs risk in MSDs. This health promotion approach is critical for care of human recourse.

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Determining Changes in Electromyography Indices when Measuring Maximum Acceptable Weight of Lift in Iranian Male Students

Cited by 4 publications

References 22 publications

The Risk Assessment of Low Back Pain Based on Allowable Weight Limits for Manual Lifting in Iranian Women Workers

The Risk Assessment of Low Back Pain Based on Allowable Weight Limits for Manual Lifting in Iranian Women Workers

Redesign walker for children with diplegic cerebral palsy using TRIZ method

Effectiveness of training program in manual material handling

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