Which principle emphasizes the importance of minimizing physical effort in use?

The principle that emphasizes the importance of minimizing physical effort in use is low physical effort. This principle is designed to ensure that users can operate a product or access information with minimal fatigue and exertion. It highlights the need for designs that require the least physical effort, which is especially beneficial for individuals with varying levels of strength or physical capability.

By adhering to this principle, designers can create environments and materials that are more accessible to everyone, including those with disabilities or mobility limitations. For instance, using features like automatic doors, simpler controls that require less force, or adjustable workstations can alleviate the burden of physical effort, making tasks easier to perform.

In contrast, the other principles focus on different aspects of usability. For example, simple and intuitive use prioritizes how easily people can understand and navigate a product without extensive instruction. Equitable use emphasizes fairness and accessibility for all users, ensuring that the design works well across a diverse range of abilities, while perceptible information relates to how easily users can perceive the information necessary to use a product or service effectively. Each principle plays a vital role in creating inclusive designs, but low physical effort distinctly addresses the need to reduce physical strain.