Perfil antropométrico e qualidade de vida de trabalhadores de fábricas do Polo Industrial de Manaus

Abstract

Ergonomics is the design of a workplace, equipment, product, environment, and personnel policies that take into account the biomechanical, physical, and psychological needs of employees. Anthropometry is a fundamental discipline in this process, as it studies the physical measurements of the human body, such as sizes and proportions, and provides essential data for the ergonomic design of products. Objective: to characterize the anthropometric profile and quality of life of factory workers in the Manaus Industrial Complex. Methods: this is a cross-sectional study with 162 participants, aged 19 to 66, carried out between March and September 2024. Thirty-eight anthropometric variables were collected using the traditional manual measurement method, following the standards of ISO 7250 and Pheasent (2003). Quality of life at work was analyzed using the QWLQ-bref questionnaire, consisting of 20 questions with a scale of five alternatives. Anthropometric data were tabulated in Excel, considering means and percentiles (5, 25, 50, 75 and 95), while quality of life results were organized in a spreadsheet provided by the authors, with general scores and correlation coefficients between the domains analyzed. Multiple linear regression was used to identify the factors associated with quality of life at work. Results: the worker at the Manaus Industrial Hub has an average height of 165.7 cm, a body mass index of 27.3 kg/m2 and 62.3% of participants are overweight. Among the main findings, it was found that, on average, men have larger body dimensions than women who work at the Manaus Industrial Hub. Regarding the proportions of the body segments, the variables: hip height, chest depth, forearm fingertip length, upper reach, head circumference, sitting height, eye height, sitting shoulder and elbow, biacromial shoulder width, hip width, gluteal-popliteal length, head width, foot length, wingspan and all variables related to the hand showed significant differences between the sexes. The quality of life at work index was considered satisfactory (68), with emphasis on the personal domain, which obtained the highest score (72). There was a high correlation between the quality of life at work domain and the professional and psychological aspects (0.95), and between the professional and psychological aspects (0.90), which suggests that psychological health is associated with professional performance. The regression analysis showed sex and age as relevant factors for QWL. The quality of life of workers at the Manaus Industrial Complex is positive, based on the results of the evaluated domains presenting indexes classified as satisfactory. Conclusion: Based on the results presented, we can conclude that the anthropometric profile of workers at the Manaus Industrial Hub is atypical and specific to the North region, which reinforces the difficulty in covering this population in ergonomic and biomechanical adaptations to design products or

workstations. Quality of life at work was shown to be positive through the workers' self- report, and can serve as a basis for the formulation of policies and programs aimed at

promoting comprehensive health and improving quality of life at work.