Florindo Alex Antonio, Turrell Gavin, Garcia Leandro Martin Totaro, Dos Anjos Souza Barbosa João Paulo, Cruz Michele Santos, Failla Marcelo Antunes, de Aguiar Breno Souza, Barrozo Ligia Vizeu, Goldbaum Moises
School of Arts, Sciences and Humanities, University of Sao Paulo, Rua Arlindo Bettio, Sao Paulo, SP, 1000, Brazil.
Graduate Program in Nutrition in Public Health, School of Public Health, University of Sao Paulo, Sao Paulo, Brazil.
BMC Public Health. 2021 Feb 12;21(1):347. doi: 10.1186/s12889-020-10123-7.
Sedentary behavior is influenced by contextual, social, and individual factors, including the built environment. However, associations between the built environment and sitting time have not been extensively investigated in countries with economies in transition such as Brazil. The objective of this study is to examine the relationship between sitting-time and access to a mix of destinations for adults from Sao Paulo city, Brazil.
This study uses data from the Health Survey of Sao Paulo. Sedentary behavior was assessed by a questionnaire using two questions: total sitting time in minutes on a usual weekday; and on a usual weekend day. The mix of destinations was measured by summing the number of facilities (comprising bus stops, train/subway stations, parks, squares, public recreation centres, bike paths, primary health care units, supermarkets, food stores, bakeries, and coffee-shops) within 500 m of each participant's residence. Minutes of sitting time in a typical weekday and weekend day were the outcomes and the mix of destinations score in 500 m buffers was the exposure variable. Associations between the mix of destinations and sitting time were examined using multilevel linear regression: these models accounted for clustering within census tracts and households and adjusted for environmental, sociodemographic, and health-related factors.
After adjustment for covariates, the mix of destinations was inversely associated with minutes of sitting time on a weekday (β=- 8.8, p=0.001) and weekend day (β=- 6.1, p=0.022). People who lived in areas with a greater mix of destinations had shorter average sitting times.
Greater mix of destinations within 500 m of peoples' residences was inversely associated with sitting time on a typical weekday and weekend day. In Latin American cities like Sao Paulo built environments more favorable for walking may contribute to reducing sedentary behavior and prevent associated chronic disease.
久坐行为受环境、社会和个人因素影响，包括建筑环境。然而，在巴西等经济转型国家，建筑环境与久坐时间之间的关联尚未得到广泛研究。本研究的目的是探讨巴西圣保罗市成年人的久坐时间与前往多种目的地的便利性之间的关系。
本研究使用圣保罗健康调查的数据。通过问卷调查评估久坐行为，问卷包含两个问题：平日通常的总久坐分钟数；以及周末通常的总久坐分钟数。通过计算每位参与者住所500米范围内设施（包括公交站、火车/地铁站、公园、广场、公共娱乐中心、自行车道、初级卫生保健单位、超市、食品店、面包店和咖啡店）的数量来衡量目的地的多样性。平日和周末的久坐分钟数为结果变量，500米缓冲区内的目的地多样性得分作为暴露变量。使用多水平线性回归分析目的地多样性与久坐时间之间的关联：这些模型考虑了普查区和家庭内部的聚类情况，并对环境、社会人口学和健康相关因素进行了调整。
在对协变量进行调整后，目的地多样性与平日的久坐分钟数呈负相关（β=-8.8，p=0.001），与周末的久坐分钟数也呈负相关（β=-6.1，p=0.022）。居住在目的地多样性更高地区的人平均久坐时间较短。
人们住所500米范围内更高的目的地多样性与平日和周末的久坐时间呈负相关。在圣保罗这样的拉丁美洲城市，更有利于步行的建筑环境可能有助于减少久坐行为并预防相关慢性病。
