Introduction: Today, the health of human resources in organizations is considered an important arm. This study aimed to investigate the relationship between workplace ergonomics and musculoskeletal pain, joint range of motion (ROM), and spinal deformities in Kermanshah oil refinery staff. Materials and Methods: In the present descriptive-analytical study, all official employees of Kermanshah Oil Refinery (n = 300) were invited to participate in the study, in which 160 employees participated as a statistical sample. The independent variable in this study was workplace ergonomics and the dependent variables including musculoskeletal pain joint ROM and spinal abnormalities. Spinal mouse device was used for spinal deformities assessment, ROSA and RULA forms for workplace ergonomics evaluation, babble baseline inclinometer for measuring the range of motion of the neck, shoulder, thigh, knee, and ankle joints, and Visual Analog scale (VAS) to assess musculoskeletal pain. SPSS software (version 25) and Pearson correlation coefficient were used to investigate the relationship between research variables at a significance level of 0.05. Results: The results showed that there was a negative and significant relationship between ergonomics of the workplace with musculoskeletal pain (p<0.05), hip, neck, shoulder, knee, and ankle joints ROM (p<0.05). There was also a positive and significant relationship between workplace ergonomics and spinal abnormalities (lordosis and kyphosis) (p<0.05). Conclusion: The findings of the study showed, improper workplace ergonomics is significantly associated with chronic musculoskeletal pain, hyperkyphosis, and hyperlordosis abnormalities, and abnormal range of motion of the joints.
Background and Objectives:The localized and referral pain of lumbar disc herniation can lead to compensatory strategies to reduce perceptual pain. The purpose of this study was to determine the foot pressure distribution pattern, symmetry index, and center of pressure sways in people with and without low back pain due to lumbar disc herniation. Materials and Methods:The present descriptive study was performed in Razi University Sports Rehabilitation Laboratory in 2019, Iran. Thirty-four people were purposefully divided into two groups: low back pain due to disc herniation (n=17) and healthy (n=17). Study variables were evaluated by PT scan. The indexes of anterior-posterior sways (SDy), medial-lateral sways (SDx), sways velocity, the center of pressure path length, sway area, length of the minor axis, length of the major axis, and symmetry index (SI) were evaluated during quiet stance. Independent t-test was used to compare the means across the two groups. Results:The results of this study showed a significant increase in the center of pressure path length (p=0.001), sways velocity (p=0.001), and SDy (p=0.001), and a significant decrease in SI (p=0.001) in the lumbar disc herniation group compared to the control. Conclusion:According to the findings of the study, people with lumbar disc herniation have a unilateral plantar pressure distribution that can be a result of delayed muscles activation of the spine due to the pain and can cause knee and ankle joints injuries. As a result, using neuromuscular exercises, with the aim of timely activation of spinal stabilizers, is a good way to reduce subsequent injuries.
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