Ergonomics in Design

Investigators determined the optimal design of a portable dynamic seat cushion. The cushion must be at least as wide as hip breath (personalized is suggested). The best shape was a ring-shaped air sac. Higher inflation increased muscle activation.

Sharable systems and activities (e.g. car sharing service) are not well covered in ergonomic training. Based upon the literature and the authors’ studies, they present a 8 primary guidelines along with associated example solutions.

Usability of handles was studied with lifting in a grocery store. The most preferred and best evaluated design are classic rounded rectangular handles, middle position, set at 0 degrees angle. Curved handles are less preferred and holes are least preferred; and both distribute weight less evenly.

An HFE heuristic tool for healthcare was developed to evaluate substitute products under shortages. It is a 5-stage procedure: 1. Understand the project, 2. Sketch ideas, 3. Storyboard, 4. Prototype, and 5. Validate.