Human Factors and Ergonomics

involves the systematic measurement of the physical properties of the human body, primarily dimensional descriptors of body size and shape
Static Data
measurements of the fixed points of the human body (ex. distance from elbow to wrist)
Dynamic data
measurements based on movement of the human body (ex. Grip strength)
Primary data
first hand data collected by the designer or researcher
Secondary data
data gathered from other databases
Fixed designs
designs based on measurements optimized for people in the 50th percentile range
Adjustable designs
made to fit people in a range of sizes, typically the 5th-95th percentile range
Qualitative data
Data that is based on subjective information
Quantitative data
Data that is measurable and specific
Physiological factor data
data about the limits of the human body and how the body interacts with the environment (ex. hand-eye coordination)
Research on how the body is moved, bones and muscles are measured and analyzed so that designers can create products that are usable by the customer