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What is physical ergonomics?
Concerned with human anatomy + of some of the anthropometric characteristics as they relate to physical activity.
Designers study physical characteristics to optimise comfort, safety, health and performance of the user
Physiological Factors
bodily tolerances; like comfort and fatigue
Types of physiological factor data available:
bodily tolerances such as fatigue and comfort.
muscle strength in different body positions
endurance in different body positions
visual acuity
tolerance to extremes of temperature
frequency range of human hearing,
size
eye/hand coordination
etc
How is physiological factor data collected?
using a wide range of methods, such as performance testing, user trials and observations, collection of anthropometric data, etc
Comfort and fatigue
When users interact with products, they may put stress on their bodies which leads to comfort and fatigue.
Fatigue: errors can creep in that can be dangerous, designers must understand peoples tolerances and design products and environments that help to reduce fatigue.
Comfort: varies- customisation + adjustability
Biomechanics
research and analysis of the mechanics of living organisms
important when designing products considering muscle strength, age, handle size etc
Examples of designs needing biomechanics
In a kitchen: viewing distances, pulling strength, lifting strength and turning strength.
In a can opener, valve wheel, corkscrew, door handle, jam jar lid – torque becomes important.
Note
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