The effect of shoulder posture on performance,discomfort and muscle fatigue whilst working on a visual display unit |
| |
| Affiliation: | 1. The Jaffe Food Allergy Institute, Division of Allergy and Immunology, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY;2. Immunology Institute and Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY;1. San Diego Center for Spinal Disorders, 4130 La Jolla Village Drive, Suite 300, La Jolla, CA 92037, USA;2. Rady Children Hospital, 3030 Children''s Way, Ste. 410 San Diego, CA 92123, USA;3. Hacettepe University, Sihhiye Ankara, 06100 Turkey;4. Department of Orthopaedics and Rehabilitation, University of Florida College of Medicine, PO Box 112727 Gainesville, FL 32611-2727;5. K2M, Inc K2M, Inc.: 751 Miller Drive, SE, Leesburg, Virginia 20175, USA;1. Deanship of Scientific Research, King Saud University, Riyadh 11451, Saudi Arabia;2. Department of Physics, Faculty of Science, Alexandria University, Alexandria 21511, Egypt;3. Department of Physics, College of Science and Arts, Qassim University, Al Qassim, Saudi Arabia;4. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;5. Research Chair on Laser Diagnosis of Cancers, College of Science, King Saud University, Saudi Arabia;1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia;2. Physics Department, Moscow State University, Leninskie gory 1, 119991 Moscow, Russia;3. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 58, 119333 Moscow, Russia;4. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, 119991 Moscow, Russia;5. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, 119991 Moscow, Russia |
| |
| Abstract: | An investigation was conducted to determine the relationship between posture and performance while working on a VDU. Twenty-one female subjects performed a 20 min choice reaction time task in a within-subject design with shoulder flexion (0° versus 30°) and noise (55 dB versus 75 dB) as factors. Discomfort measures, electromyography (EMG) measures and measures of performance including reaction time and percentage of errors were collected. The results suggested poorer performance in the 30° shoulder flexion posture compared to the 0° shoulder flexion posture (performance index F1,20 = 3.95, p = 0.061). There was also significantly greater discomfort and fatigue, as indicated by EMG, in the 30° shoulder flexion compared to 0° shoulder flexion (discomfort: F1,20 = 99.30; p = 0.0001 EMG: F1,20 = 4.25, p = 0.052). The results of this study provide the most direct evidence that the posture of VDU users can affect their performance at a task. A number of possible mechanisms for posture to affect performance are explored using the data. The utility of data showing the effect of posture on performance data is discussed in terms of financial modelling to justify the cost of ergonomic intervention. Relevance to industryPoor posture whilst working at a VDU has been previously linked with the development of poor health but has not been directly linked with poor performance. This paper provides evidence to show posture can effect VDU performance. This enables organisations to use estimates of performance changes to model the costs of investment in ergonomic interventions. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
