Hamid Salmani Nodooshan; Hadi Daneshmandi; Alireza Choobineh; Farzaneh Yazdani; Mohsen Razeghi; Taymaz Shahnazar Nezhad Khales
Abstract
Background: Musculoskeletal disorders in the upper extremities are common among computer users. This study aimed to assess the effect of mouse pad angle on the forearm muscles activity and upper limb discomfort.Methods: This is an experimental research design. The mouse pad was set at 0, 10, 20, and ...
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Background: Musculoskeletal disorders in the upper extremities are common among computer users. This study aimed to assess the effect of mouse pad angle on the forearm muscles activity and upper limb discomfort.Methods: This is an experimental research design. The mouse pad was set at 0, 10, 20, and 30 degrees of forearm supination. Ten subjects performed an identical text editing task with mouse in each pad position. Electrical activity of the selected forearm muscles was recorded with surface electrodes. 10-point rating scales were used for assessing perceived discomfort.Results: Extensor Carpi Radialis had the lowest mean of Electromyography (EMG) values in the 0° slanted pad (5.94), and the highest values were associated with Pronator Quadratus in 0-degree slanted pad (22.29). The highest and the lowest mean (SD) of the users’ upper limb discomfort were 3.70 (1.63) and 1.90 (1.28) in 30° and 10° slanted pads, respectively.Conclusion: Using slanted mouse pads could be a helpful and practical tool for office workers to keep more neutral wrist/hand positions.
Akram Sadat Jafari Roodbandi; Alireza Choobineh; Vafa Feyzi; Zohre Foroozanfar; Nazanin Hosseini
Abstract
Background: Physical fitness and optimum functional movement are essential for efficient performance of job tasks without fatigue and injury. This study aimed to investigate the relationship between Functional Movement Screening (FMS) test score and prevalence of Musculoskeletal symptoms (MSSs) in emergency ...
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Background: Physical fitness and optimum functional movement are essential for efficient performance of job tasks without fatigue and injury. This study aimed to investigate the relationship between Functional Movement Screening (FMS) test score and prevalence of Musculoskeletal symptoms (MSSs) in emergency nurses and Emergency Medical Services (EMS) staff. The present study also sought to determine optimum cut-off point of FMS test score in health personnel.Methods: This cross-sectional study was conducted on 134 male and female emergency nurses and EMS technicians. After watching a video tutorial and undergoing practical training of how to do the FMS test, the participants carried out the test while wearing comfortable clothes. In addition to the demographic data questionnaire, Nordic musculoskeletal questionnaire was also completed for each participant. The data were analyzed using the SPSS software, version 18 at the significance level of 0.05.Results: Totally, 49.3% (n=66) of the participants were female. The subjects’ mean age and work experience were 35.3±8.7 and 11.4±7.7 years, respectively. Cut-off point of 17 was determined with the highest sensitivity (0.71) and specificity (0.71) based on ROC curve. The highest prevalence of MSSs was observed in the knees (n=44, 32.8%) and lower back (n=31, 23.1%). Multiple linear regression modeling also showed that age, sex, and the prevalence of MSSs were significantly associated with the FMS test score.Conclusion: FMS test seems to be an appropriate screening tool in pre-employment and periodic medical tests for jobs requiring physical fitness and optimum functional movements.