Speed of Force Exertion SF

Chronic Exposure Index Model to Assess Ergonomic Risk Factor Related to Upper Extremity Musculoskeletal Disorders 71 • Unsuitable lighting low or high • Exposure to heat • Carelessly • Economic problems • Background of UEMSDs • Localized compression on upper limb • Lack of training • Secondary job • Reach limit • Clearance • Humidity • Poor size or shape of parts • Presenting vibration • Exposure to cold • Presenting noise • Low experience • Familiar problems • Contact stress • Sharpness of object surface • Rapid twistingturning movements • Overtime • Slippery level • Poor packaged goods or poor handles • Chemical components and poisons • Hand-arm vibrations Then, the scores are added and the corresponding multiplier factor is determined Table 10, which was calculated from 15 and 16 studies using the OCRA method 10.

4. Development of the CEI

UEMSDs are generally agreed to be a multi-factorial occupational problem 24. Many epidemiological studies have linked development of UEMSDs to various risk factors 25, 26, 27, 28, which have been classified into physical 29, psychosocialorganizational 30, 31, 32, and individual 33 occupational risk factors. Several ergonomic techniques have been developed to assess exposure UEMSD risk factors 34. Many of the posture–based observational techniques which have been provided are only strictly applicable in very limited circumstances and have shortcomings and limitations. Based on these findings and current techniques, a strategy and policy was developed to obtain a CEI which: a Is applicable to the complete range of manual tasks; b Provides an integrated assessment of various risk factors; c Provides an independent assessment of disorder risk to different body regions; dProvides an overall risk assessment which allows prioritisation of tasks and submits suggested action levels; eFacilitates effective targeting of controls by providing an indication the relative severity of different risk factors within a task; f Is suitable for use by workplace staff with minimal training and equipment; g Is quick and easy to use; and h Can identify high risk manual handling and repetitive tasks