Influence of Expertise and Demographics on Perceived Ergonomic Risks in Physical Tasks

Abstract

This study examines how professional experience, and the use of personal protective equipment (PPE) influence perceived ergonomic convenience, risk, proficiency, and safety across three physical task domains: assembly, culinary, and ladder-related activities. Participants (N = 142), comprising both professionals and laypersons, completed an assembly task using four tools, a culinary task involving 12 activities, and ladder tasks with and without gloves and sole grips. Data were analyzed using t-tests, Pearson correlations, and Bayesian comparisons. Professionals rated assembly tools as significantly less risky than laypersons, though both groups reported similar levels of convenience. In culinary tasks, professionals reported higher proficiency and greater comfort in activities such as stirring and oven use. PPE improved perceived ladder safety, especially when gloves and sole grips were used together. Gender differences were minimal, though some trends emerged in risk perception and task preference. Professional experience influenced perceptions of risk and proficiency, whereas convenience ratings remained consistent across groups. The findings support the need for ergonomic tool design, targeted safety training, and effective PPE implementation across task settings.