RESUMO
INTRODUCTION: Only international studies can provide the full variability of built environments and accurately estimate effect sizes of relations between contrasting environments and health-related outcomes. The aims of the International Physical Activity and Environment Study of Adolescents (IPEN Adolescent) are to estimate the strength, shape and generalisability of associations of the community environment (geographic information systems (GIS)-based and self-reported) with physical activity and sedentary behaviour (accelerometer-measured and self-reported) and weight status (normal/overweight/obese). METHODS AND ANALYSIS: The IPEN Adolescent observational, cross-sectional, multicountry study involves recruiting adolescent participants (ages 11-19 years) and one parent/guardian from neighbourhoods selected to ensure wide variations in walkability and socioeconomic status using common protocols and measures. Fifteen geographically, economically and culturally diverse countries, from six continents, participated: Australia, Bangladesh, Belgium, Brazil, Czech Republic, Denmark, Hong Kong SAR, India, Israel, Malaysia, New Zealand, Nigeria, Portugal, Spain and USA. Countries provided survey and accelerometer data (15 countries), GIS data (11), global positioning system data (10), and pedestrian environment audit data (8). A sample of n=6950 (52.6% female; mean age=14.5, SD=1.7) adolescents provided survey data, n=4852 had 4 or more 8+ hours valid days of accelerometer data, and n=5473 had GIS measures. Physical activity and sedentary behaviour were measured by waist-worn ActiGraph accelerometers and self-reports, and body mass index was used to categorise weight status. ETHICS AND DISSEMINATION: Ethical approval was received from each study site's Institutional Review Board for their in-country studies. Informed assent by adolescents and consent by parents was obtained for all participants. No personally identifiable information was transferred to the IPEN coordinating centre for pooled datasets. Results will be communicated through standard scientific channels and findings used to advance the science of environmental correlates of physical activity, sedentary behaviour and weight status, with the ultimate goal to stimulate and guide actions to create more activity-supportive environments internationally.
Assuntos
Ambiente Construído , Exercício Físico , Caminhada , Adolescente , Austrália , Bangladesh , Bélgica , Brasil , Criança , Estudos Transversais , República Tcheca , Planejamento Ambiental , Feminino , Hong Kong , Humanos , Índia , Israel , Malásia , Masculino , Nova Zelândia , Nigéria , Portugal , Características de Residência , Espanha , Adulto JovemRESUMO
BACKGROUND: Relationships between several built environment factors and physical activity and walking behavior are well established, but internationally-comparable built environment measures are lacking. The Microscale Audit of Pedestrian Streetscapes (MAPS)-Global is an observational measure of detailed streetscape features relevant to physical activity that was developed for international use. This study examined the inter-observer reliability of the instrument in five countries. METHODS: MAPS-Global was developed by compiling concepts and items from eight environmental measures relevant to walking and bicycling. Inter-rater reliability data were collected in neighborhoods selected to vary on geographic information system (GIS)-derived macro-level walkability in five countries (Australia, Belgium, Brazil, Hong Kong-China, and Spain). MAPS-Global assessments (n = 325) were completed in person along a ≥ 0.25 mile route from a residence toward a non-residential destination, and a commercial block was also rated for each residence (n = 82). Two raters in each country rated each route independently. A tiered scoring system was created that summarized items at multiple levels of aggregation, and positive and negative valence scores were created based on the expected effect on physical activity. The intraclass correlation coefficient (ICC) was computed for scales and selected items using one-way random models. RESULTS: Overall, 86.6% of individual items and single item indicators showed excellent agreement (ICC ≥ 0.75), and 13.4% showed good agreement (ICC = 0.60-0.74). All subscales and overall summary scores showed excellent agreement. Six of 123 items were too rare to compute the ICC. The median ICC for items and scales was 0.92 with a range of 0.50-1.0. Aesthetics and social characteristics showed lower ICCs than other sub-scales, but reliabilities were still in the excellent range (ICC ≥ 0.75). CONCLUSION: Evaluation of inter-observer reliability of MAPS-Global across five countries indicated all items and scales had "good" or "excellent" reliability. The results demonstrate that trained observers from multiple countries were able to reliably conduct observations of both residential and commercial areas with the new MAPS-Global instrument. Next steps are to evaluate construct validity in relation to physical activity in multiple countries and gain experience with using MAPS-Global for research and practice applications.
Assuntos
Planejamento Ambiental , Exercício Físico , Observação/métodos , Características de Residência , Adulto , Austrália , Bélgica , Ciclismo , Brasil , Criança , China , Feminino , Sistemas de Informação Geográfica , Hong Kong , Humanos , Masculino , Variações Dependentes do Observador , Pedestres , Reprodutibilidade dos Testes , Fatores Sociológicos , Espanha , CaminhadaRESUMO
BACKGROUND: Advancements in geographic information systems over the past two decades have increased the specificity by which an individual's neighborhood environment may be spatially defined for physical activity and health research. This study investigated how different types of street network buffering methods compared in measuring a set of commonly used built environment measures (BEMs) and tested their performance on associations with physical activity outcomes. METHODS: An internationally-developed set of objective BEMs using three different spatial buffering techniques were used to evaluate the relative differences in resulting explanatory power on self-reported physical activity outcomes. BEMs were developed in five countries using 'sausage,' 'detailed-trimmed,' and 'detailed,' network buffers at a distance of 1 km around participant household addresses (n = 5883). RESULTS: BEM values were significantly different (p < 0.05) for 96% of sausage versus detailed-trimmed buffer comparisons and 89% of sausage versus detailed network buffer comparisons. Results showed that BEM coefficients in physical activity models did not differ significantly across buffering methods, and in most cases BEM associations with physical activity outcomes had the same level of statistical significance across buffer types. However, BEM coefficients differed in significance for 9% of the sausage versus detailed models, which may warrant further investigation. CONCLUSIONS: Results of this study inform the selection of spatial buffering methods to estimate physical activity outcomes using an internationally consistent set of BEMs. Using three different network-based buffering methods, the findings indicate significant variation among BEM values, however associations with physical activity outcomes were similar across each buffering technique. The study advances knowledge by presenting consistently assessed relationships between three different network buffer types and utilitarian travel, sedentary behavior, and leisure-oriented physical activity outcomes.
Assuntos
Planejamento Ambiental , Exercício Físico , Sistemas de Informação Geográfica , Internacionalidade , Características de Residência , Brasil/epidemiologia , Estudos Transversais , Dinamarca/epidemiologia , Exercício Físico/fisiologia , Comportamentos Relacionados com a Saúde/fisiologia , Humanos , Nova Zelândia/epidemiologia , Meios de Transporte/métodos , Reino Unido/epidemiologia , Estados Unidos/epidemiologia , Caminhada/fisiologiaRESUMO
Transport is associated with environmental problems, economic losses, health and social inequalities. A number of European and US cities have implemented initiatives to promote multimodal modes of transport. In Latin America changes are occurring in public transport systems and a number of projects aimed at stimulating non-motorized modes of transport (walking and cycling) have already been implemented. Based on articles from peer-reviewed academic journals, this paper examines experiences in Bogotá (Colombia), Curitiba (Brazil), and Santiago (Chile), and identifies how changes to the transport system contribute to encourage active transportation. Bus rapid transit, ciclovias, bike paths/lanes, and car use restriction are initiatives that contribute to promoting active transportation in these cities. Few studies have been carried out on the relationship between transport and physical activity. Car ownership continues to increase. The public health sector needs to be a stronger activist in the transport policy decision-making process to incorporate health issues into the transport agenda in Latin America.
Assuntos
Atividade Motora , Saúde Pública , Meios de Transporte/métodos , Automóveis/estatística & dados numéricos , Ciclismo/estatística & dados numéricos , Brasil , Chile , Colômbia , Humanos , América Latina , Propriedade/estatística & dados numéricos , Propriedade/tendências , Política Pública , Fatores Socioeconômicos , Meios de Transporte/estatística & dados numéricos , Caminhada/estatística & dados numéricosRESUMO
Transport is associated with environmental problems, economic losses, health and social inequalities. A number of European and US cities have implemented initiatives to promote multimodal modes of transport. In Latin America changes are occurring in public transport systems and a number of projects aimed at stimulating non-motorized modes of transport (walking and cycling) have already been implemented. Based on articles from peer-reviewed academic journals, this paper examines experiences in Bogotá (Colombia), Curitiba (Brazil), and Santiago (Chile), and identifies how changes to the transport system contribute to encourage active transportation. Bus rapid transit, ciclovias, bike paths/lanes, and car use restriction are initiatives that contribute to promoting active transportation in these cities. Few studies have been carried out on the relationship between transport and physical activity. Car ownership continues to increase. The public health sector needs to be a stronger activist in the transport policy decision-making process to incorporate health issues into the transport agenda in Latin America.
El transporte está asociado con problemas ambientales, pérdidas económicas, salud poblacional e inequidades sociales. En ciudades de Europa y Estados Unidos hay iniciativas para promover el transporte multimodal. En Latinoamérica hay proyectos en curso para cambiar los sistemas de transporte y estimular el transporte no motorizado (caminar y montar bicicleta). Basada en una revisión de artículos publicados en revistas académicas, se identifica de qué forma los cambios en el transporte en Bogotá (Colombia), Curitiba (Brasil) y Santiago (Chile) han contribuido a promover el transporte activo. A pesar que en estas tres ciudades se están implementando iniciativas para promover el transporte activo (sistema de autobuses articulados, ciclovías, ciclorutas, y restricciones para el uso del coche particular), pocos estudios han sido desarrollados sobre la relación entre el transporte y la actividad física utilitaria. La tenencia del coche particular continúa incrementándose. El sector de salud necesita ser un agente fuerte para incorporar la salud pública en la agenda de transporte en América Latina.
O transporte está associado a problemas ambientais, perdas econômicas, de saúde da população e as desigualdades sociais. Em cidades da Europa e da América existem esforços para promover o transporte multimodal. Na América Latina, há projetos em andamento para mudar os sistemas de transporte e incentivar o transporte não motorizado (caminhar e andar de bicicleta). Com base em uma revisão de artigos publicados em revistas acadêmicas identificou-se como as mudanças no transporte contribuíram para promover o transporte ativo em Bogotá (Colômbia), Curitiba (Brasil) e Santiago (Chile). Apesar de que nestas três cidades se estejam implementando iniciativas para promover o transporte ativo (sistema de ônibus articulado, ciclovias, pistas de ciclismo e restrições ao uso do automóvel particular), poucos estudos têm sido desenvolvidos sobre a relação entre transporte e atividade física utilitária. O uso de carro particular continua aumentando. O setor da saúde tem de ser um ativista forte para incorporar a saúde pública na agenda de transportes na América Latina.