OBJECTIVES The aim of this study was to compare the psychophysiological strain related to a conventional shift schedule and new ergonomically improved two- and three-shift schedules using heart rate variability (HRV) analysis. The specific aim was to determine whether the introduced ergonomic shift arrangement had any positive effects on the psychophysiological strain such as increased HRV or d...

BACKGROUND The workplace plays an important role in workers' performances, but most workplaces have not been designed and equipped in keeping with primary ergonomic principles. Ignoring these principles can cause ergonomic risk factors, difficulties for workers, and damage to workers' health. The aim of this study was to identify acceptable ergonomic properties in workplaces in order to determi...

OBJECTIVE The aim of this study is to determine the risk factors related to upper extremities work-related musculoskeletal disorders (WRMSDs) in cameramen. METHODS A questionnaire survey was performed on 166 cameramen in a broadcasting station. The questionnaire consisted of questions on the general characteristics, the health behavior, work type and duration, physical burden, ergonomic postu...

background: design of school furniture is one of the contributing factors to back pain among pupils. research has implicated that mismatch between school furniture and body size may be regarded as a causative factor for muculoskeletal disorders amongst pupils. to investigate the fitness between school furniture and pupils this study was designed and implemented in hamadan city, west of iran. me...

objectives: an effective safety management requires paying attention to human factors. one of the most important methods for achievement to accident prevention is using safety climate or safety culture. moreover, some studies suggest that in most organizations behavior contributes to 86-96% of all injuries. this cross-sectional study was performed on the functional units’ workers of khuzestan p...

The application of ergonomics in enterprises is gaining in importance. Nowadays ergonomics in enterprises is addressed in a more technical manner. Therefore it is necessary to try to adapt generally applicable ergonomic practices to a technical perception. The result of this is a search for approaches that can be used as a link between technical and ergonomic perspectives of problems in the wor...

We assessed the effects of two ergonomic aids on the usability of an in-line screwdriver. The simple aids considered were a hand support and a sleeve which softened the handle. In an experiment, 15 subjects drove screws into horizontal plywood plates with four combinations of a screwdriver and an ergonomic aid. The activities of four forearm muscles (EMG) and the force acting on the screw were ...

BACKGROUND Changes in industries and work practices have coincided with work-related musculoskeletal disorders (MSDs). This study was conducted to determine the prevalence of MSDs and to assess postural loading in assembly workers of an Iranian telecommunication manufacturing company. METHODS Data were collected from 193 randomly selected workers in 4 units of the company. The Nordic musculos...

This paper introduces the Ergonomic Work Analysis as a relevant instrument to identify the risks in occupational environments through the investigation of factors that influence the relationship between the worker and the productive process. It draws a parallel between the several aspects of risk identification in traditional tools of Health and Safety Management and the factors embraced by the...