The Revised Strain Index: an improved upper extremity exposure assessment model
| Autor: | Jay Kapellusch, Arun Garg, J. Steven Moore |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Physical Therapy Sports Therapy and Rehabilitation Human Factors and Ergonomics Risk Assessment Upper Extremity 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Task Performance and Analysis Medicine Humans 0501 psychology and cognitive sciences Exertion Musculoskeletal Diseases Strain index 050107 human factors Simulation Exposure assessment Workstation design business.industry 05 social sciences 030210 environmental & occupational health Intensity (physics) Occupational Diseases Sprains and Strains Ergonomics business |
| Zdroj: | Ergonomics. 60(7) |
| ISSN: | 1366-5847 |
| Popis: | The Revised Strain Index (RSI) is a distal upper extremity (DUE) physical exposure assessment model based on: intensity of exertion, frequency of exertion, duration per exertion, hand/wrist posture and duration of task per day. The RSI improves upon the 1995 Strain Index (SI) by using continuous rather than categorical multipliers, and replacing duty cycle with duration per exertion. In a simulation of 13,944 tasks, the RSI and 1995 SI showed good agreement in risk predictions for 1995 SI scores ≤3 (safe) and 13.5 (hazardous). For tasks with 1995 SI scores of 3 and ≤13.5, the two models showed marked disagreement, with the RSI providing much greater discriminations between 'safe' and 'hazardous' tasks for various combinations of force, repetition and duty cycle. We believe the RSI is a substantially improved model that will be useful for DUE task analysis, intervention and design. Practitioner Summary: RSI is a substantial improvement over the 1995 SI. It should be a valuable tool for designing and analysing tasks to determine risk of musculoskeletal injuries. RSI is applicable to a wide variety of tasks including very low force and very high repetition tasks such as keyboard use. |
| Databáze: | OpenAIRE |
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