Sign In

 Ergonomics Principles

Ergonomics Principles

The Big Three
The three main risk factors for ergonomics analysis are:
         1) The Force
         2) The Posture
         3) The Repetition
Each of these factors alone poses a risk of injury. 
However, the combination of all poses a greatest risk of injury.
Minimizing forces, controlling the frequency (repetition) rate, with a proper working posture can minimize the risk of injury.
         1) The Force
It is the ability to exert power through contraction of muscles. 
If you exert muscular force, more than you are capable of, it may cause risk to injury. 
Example: While working on keyboard, high finger forces combined with awkward hand posture and high repetition rate increases the risk of hand injury. 


         2) The Posture
It is the angles your body and joints are in when performing tasks.
Posture becomes risk, if a task is performed in an awkward or unnatural position.
Example: For office tasks, poor posture of spine, neck, elbow and wrist may case risk of injury.
         3) The Repetition
It is the ability to repeat a task in a specific posture for over a period of time.
Repetition becomes risk, if you perform the same movement multiple times on the work for a long period of time. 
Example: For task involving keyboard, repetitive typing on office desk can increase risk of injury. 
Thus, it is recommended to take frequent breaks by simply performing a different task other than typing.