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Showing 3 results for Posture
Determine the prevalence and risk of of musculoskeletal disorders in employees of an industrial unit
Ahmad Zolfaghari, Bahram Kouhnavard,
Volume 3, Issue 1 (5-2016)
Abstract

Abstract

Introduction: musculoskeletal disorders are one of the most common occupational injuries in industrialized and developing countries. This study aimed to determine the prevalence and risk of musculoskeletal disorders in employees of an oil company.

Methods: In this cross-sectional study, all 35 staff of Isomax unit of an oil company participated. Nordic questionnaire used to determine the prevalence of musculoskeletal disorders and RULA and REBA methods used to assess the risk of musculoskeletal disorders.

Results: Most of the workers of Isomax unit had disorders in low back (22.4%) and least of them in the elbow region (1.4%). There was a significant correlation between age and experience and musculoskeletal disorders (P<0.001). The most and the least musculoskeletal disorders observed in operation workers and foremen, respectively. The results of REBA posture assessment showed 10 percent of postures with low risk, 60% of postures with medium risk, and 30 percent of postures with high risk. The results of posture analysis by RULA method also showed that 50 percent of postures were in level 2 ( more detailed investigation is necessary and probably some changes are needed) and 50%  in level 3 (more detailed investigation is necessary and changes are required to be performed soon).

Conclusion: Based on the results of this study, it can be concluded that the risk and prevalence of musculoskeletal disorders in the studied population, especially in operation workers, is high and there is a need for ergonomic intervention.


Posture analysis of repetitive tasks in workers of a refrigerator factory using ART method
Ehsanollah Habibi, Younes Mehrifar,
Volume 4, Issue 1 (5-2017)
Abstract
Introduction: Nowadays different techniques are used for ergonomic risk assessment of repetitive tasks. The aim of the present study was to investigate the upper limbs musculoskeletal disorders and the risk of repetitive tasks in assembly line workers in a refrigerator factory.
Methods: This is a descriptive-analytical and cross-sectional study. At first, the task description worksheets were completed to record the data of 17 assemblers in Khorram Abad city refrigerator factory. After determining tasks and sub-tasks of each workstation, ergonomic risk of the the assemblers’ upper limbs was assessed using the Assessment of Repetitive Tasks (ART) tool. The data were analyzed using SPSS software.
Results: According to the findings, the highest risk score in assemblers' repetitive tasks for the right and left hands were related to the installing internal vacuums (Risk Score=27) and refrigerator evaporators (Risk Score=22), respectively. On the other hand, the total risk score in the workstation of connecting upper parts of the refrigerators was higher than the total scores of the other assembly stations. The present study indicated that the risk level of musculoskeletal disorders of the right hand is higher than that of the left hand.
Conclusion: The results of the present study showed that the risk of musculoskeletal disorders in repetitive tasks in the assembly jobs is relatively high and requires further investigations for training workers about the correct principles of ergonomics, and appropriate design of workstations.

Effectiveness of Corrective Exercises Based the National Academy of Sports Medicine’s Protocol in Correcting Flexible Flatfoot and Postural Control in Male High School Students With Overweight
Allahyar Arabmomeni, Seyed Abbas Mousavi,
Volume 9, Issue 4 (12-2022)
Abstract
Objective: Flatfoot and postural control problems are the most common physical and motor disorders among shool students. This study aims to investigate the effects of the National Academy of Sports Medicine (NASM)’s corrective exercises on the correction of flexible flatfoot and postural control in male high school students with overweight.
Methods: This is a quasi-experimental study with a pre-test/post-test design. Participants were 40 male high school students with flexible flatfoot and overweight who were selected using a purposeful sampling method and were randomly assigned into two groups of exercise (n=20) and control (n=20). The exercise group performed NASM’s corrective exercises for 8 weeks, three sessions per week, each for 45 minutes. Variables were measured at the baseline and after the program. Data were analyzed using analysis of covariance in SPSS software, version 24. The significance level was set at 0.05.
Results: The NASM’s corrective exercises could significantly improve flexible flatfoot and postural control in overweight students (p≥0.05). The effect size was 0.32 for the flatfoot and 0.28 for the postural control variables.
Conclusion: The NASM’s corrective exercise protocol can correct the flexible flatfoot and improve postural control in male high school students with overweight. Therefore, it is recommended that trainers and rehabilitation centers use this corrective exercise protocol.
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