Ergonomics is a scientific discipline which plays a vital role in the prevention of human sickness and to improve their life style. It considers the human factors such as daily activities, tasks and functions that are performed by an individual. Developments in the sensory aids like visual, hearing and walking assist aids and so on are made according to the factors. The person who makes ergonomic designs are called Ergonomists. A proper design should be essential for preventing the strain injuries and musculoskeletal disorders. The field of ergonomics includes the disciplines like psychology, sociology, biomechanicsphysiology, industrial design, anthropometry, interactive design and user-friendly design. The major three types of ergonomics are

•     Physical ergonomics

•     Organizational ergonomics

•     Cognitive ergonomics

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