Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258754
Type: TESE
Degree Level: Doutorado
Title: A luz alem da visão : iluminação e sua relação com a saude e bem-estar de funcionarias de lojas de rua e de shopping centers em Porto Alegre
Title Alternative: The light beyond vision : lighting and its relationship with health and well-being of employees at street and shopping mall retail stores in Porto Alegre
Author: Martau, Betina Tschiedel
Advisor: Scarazzato, Paulo Sérgio, 1954-
Abstract: Resumo: Este trabalho aborda os impactos nao visuais da exposicao humana a luz tentando relacionar a qualidade da iluminacao a saude e bem-estar das funcionarias de lojas. A amostra do estudo transversal foi definida aleatoriamente, com a participacao de mulheres voluntarias. Foram selecionados tres grupos com dez participantes em cada: lojas de rua com contato com exterior e turno de trabalho diurno (9h as18h), lojas de shopping centers sem janelas para o exterior com turno de trabalho diurno (10h as 18h) e lojas de shopping centers sem janelas para o exterior com turno de trabalho tarde e noite (14h as 22h). A avaliacao da iluminacao considerou as dimensoes das lojas e caracteristicas dos sistemas, incluindo ofuscamento, aparencia de cor da luz, flexibilidade e possibilidade de controles da iluminacao pelas funcionarias. A avaliacao de aspectos relativos a saude e ao bem-estar utilizou como instrumentos as escalas psicometricas validadas pela area da Psicologia para afericao de sintomas depressivos, de ansiedade e estresse. A avaliacao das condicoes de sono e analise do ritmo atividade/repouso foi feita com um actimetro com luximetro acoplado (Actiwatch), e a analise do ritmo de temperatura corporal, com um sensor de temperatura (Ibutton). Foi estabelecido o padrao de luz 24h a que esteve sujeita cada participante durante cinco dias consecutivos e verificada a influencia deste padrao no sistema circadiano, atraves da medicao dos niveis de melatonina e cortisol salivar. O grau de satisfacao das funcionarias e suas preferencias relativas a iluminacao do ambiente de trabalho foram levantados atraves da aplicacao de questionarios. Os dados foram analisados utilizando-se correlacoes de Pearson, ANOVA e regressoes tipo stepwise, tendo como ferramenta o SPSS for Windows 13.0. No grupo das lojas de rua, os resultados indicam que, apesar de o nivel de satisfacao das funcionarias com os sistemas de iluminacao nao ser elevado, a presenca de luz natural contribui para sua saude e bem-estar. O cruzamento de aspectos de satisfacao e emocionais com os aspectos biologicos indicou que quanto maior a satisfacao geral com a iluminacao pela funcionaria da loja de rua, maior o nivel de melatonina as 24h e menores o escores de depressao. A possibilidade de contato com o exterior neste grupo leva a melhores condicoes fisiologicas, principalmente nas condicoes de sono, que os demais grupos. Nos grupos de shopping centers, a correlacao inversa encontrada entre a iluminancia geral media da loja e a satisfacao geral com as condicoes da iluminacao no ambiente de trabalho merece destaque, porque e nesta categoria que os escores foram mais altos em todas as escalas aplicadas, indicando piores condicoes emocionais, e onde ha alteracoes nos aspectos biologicos avaliados. A pesquisa conclui ser necessaria a revisao das estrategias para a iluminacao de lojas, sejam elas de rua ou de shopping centers, buscando-se resolver os possiveis conflitos entre uma iluminacao para vender produtos e a que considere a loja como um ambiente de trabalho.

Abstract: This work addresses the issue of non-visual impacts of human exposure to light, in an attempt to relate the quality of lighting to health, comfort, and well-being of female retail store employees. The sample for the cross-sectional study was randomly established with female volunteers. Three groups were selected: street retail stores with outside contact and daily working hours (9 a.m. to 6 p.m.), shopping mall retail stores with no window facing outside, with daily working hours (10 a.m. to 6 p.m.), and shopping mall retail stores with no window facing outside, with afternoon and evening working hours (2 p.m. to 10 p.m.). Each group included ten employees. Assessment of lighting considered the dimensions of the stores and characteristics of systems, including the occurrence of glare, color appearance of light, flexibility, and possibility of lighting control by employees. The tools to assess well-being and health were psychometric scales internationally validated by the psychiatric field to measure depression, anxiety, and stress symptoms. Assessment of sleep conditions and analysis of the activity/rest rhythm was carried by a wrist monitor with attached luximeter (Actiwatch) and the analysis of the body temperature rhythm was made by a temperature sensor (Ibutton), to which each participant was submitted for five consecutive days. The lighting pattern's influence on the circadian system was verified by measuring saliva melatonin and cortisol levels. The degree of satisfaction of employees and their preferences regarding work environment lighting were surveyed by applying questionnaires. Data were analyzed using Pearson correlations, ANOVA, and stepwise regression, with the tool SPSS for Windows 13.0. In street retail store group, results indicate that even though employees' satisfaction with lighting systems is not high, the presence of natural light contributes for their health and well-being. Crossing the assessment of satisfaction and emotional aspects with biological ones indicated that the higher the street retail store employees' general satisfaction with lighting, the higher their melatonin level at 12 p.m. and the lower their depression scores. Possibility of outside visual contact in that group leads to better physiological conditions, especially sleep conditions, than the other groups. In shopping mall groups, the reverse correlation found between the store's average general illuminance and general satisfaction with lighting conditions in the work environment is worth pointing out, since scores were highest in that category (worse emotional conditions) in all scales applied and there are changes both in cortisol rhythm (tendency to lower rhythm in the morning and afternoon mall group) and in melatonin (tendency to phase delay in the afternoon and evening mall group) as well as differentiation in activity rhythm and temperature in the afternoon and evening mall group. Shopping mall employees' miss visual contact with the outside, being able to vary lighting during the workday, and consider lighting as excessive. Most of them reported that they would like to reduce the amount of light in their workplace during the day. The study concludes that it is necessary to review the stores' lighting strategies, whether they are street retail stores or shopping mall retail stores, to seek new guidelines able to solve the possible conflicts between light oriented to sell products and that which considers the store as a workplace.
Subject: Iluminação
Iluminação de interiores
Lojas - Arquitetura
Saúde e trabalho
Melatonina
Language: Português
Editor: [s.n.]
Citation: MARTAU, Betina Tschiedel. A luz alem da visão: iluminação e sua relação com a saude e bem-estar de funcionarias de lojas de rua e de shopping centers em Porto Alegre. 2009. 504 p. Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/258754>. Acesso em: 13 ago. 2018.
Date Issue: 2009
Appears in Collections:FEC - Tese e Dissertação

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