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1.
Prev Med ; 184: 107998, 2024 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-38735586

RESUMEN

OBJECTIVE: Muscular strength and body composition are important components of health-related fitness (HRF). Grip strength and body fat percent, in particular, are associated with chronic disease and affected by health behaviours. Evidence suggests relationships between the neighbourhood built environment (BE) and HRF exist, however, few studies have focused on grip strength and body fat percent. Therefore, our study aimed to estimate the sex-specific associations between the neighbourhood BE, grip strength, and body fat percent among urban-dwelling Canadian adults. METHODS: We analyzed cross-sectional survey and HRF data collected in 2011-2015 from 4052 males and 7841 females (Alberta's Tomorrow Project, Canada). Grip strength and body fat percent were measured via handgrip dynamometry and bioelectrical impedance analysis, respectively. Walkability (Canadian Active Living Index) and greenness (Normalized Difference Vegetation Index) estimates were linked to participant data. Sex-stratified covariate-adjusted linear regression models estimated the associations between the BE and HRF variables. RESULTS: Walkability was negatively associated with grip strength and body fat percent in males (ß -0.21, 95%CI: -0.31 to -0.11 and ß -0.08, 95%CI: -0.15 to -0.02, respectively) and females (ß -0.06, 95%CI: -0.10 to -0.01 and ß -0.08, 95%CI: -0.14 to -0.02, respectively). Greenness was positively associated with grip strength in males (ß 6.99, 95%CI: 3.62 to 10.36) and females (ß 2.72, 95%CI: 1.22 to 4.22) but not with body fat percent. Controlling for physical activity and sitting did not attenuate these associations. CONCLUSION: Characteristics of the neighbourhood BE appear to be associated muscular strength and body composition, independent of physical activity and sedentary behaviour.

3.
J Acad Nutr Diet ; 124(4): 466-480.e16, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-37806435

RESUMEN

BACKGROUND: The British Columbia Farmers' Market Nutrition Coupon Program (BC FMNCP) provides households with low incomes with coupons to purchase healthy foods from farmers' markets. OBJECTIVE: To examine the impact of the BC FMNCP on the short-term household food insecurity, malnutrition risk, mental well-being, sense of community (secondary outcomes), and subjective social status (exploratory outcome) of adults with low incomes post-intervention and 16 weeks post-intervention. DESIGN: Secondary analyses from a pragmatic randomized controlled trial conducted in 2019 that collected data at baseline, post-intervention, and 16 weeks post-intervention. PARTICIPANTS/SETTING: Adults ≥18 years with low incomes were randomized to an FMNCP group (n = 143) or a no-intervention control group (n = 142). INTERVENTION: Participants in the FMNCP group received 16 coupon sheets valued at $21 Canadian dollars (CAD)/sheet over 10 to 15 weeks to purchase healthy foods from farmers' markets and were eligible to participate in nutrition skill-building activities. MAIN OUTCOME MEASURES: Outcomes included short-term household food insecurity (modified version of Health Canada's 18-item Household Food Security Survey Module), malnutrition risk (Malnutrition Universal Screening Tool), mental well-being (Warwick-Edinburgh Mental Well-Being Scale), sense of community (Brief Sense of Community Scale), and subjective social status (MacArthur Scale of Subjective Social Status community scale). STATISTICAL ANALYSIS: Mixed-effects linear regression and multinomial logistic regression examined between-group differences in outcomes post-intervention and 16 weeks post-intervention. RESULTS: The risk of marginal and severe short-term household food insecurity was lower among those in the FMNCP group compared with those in the control group (relative risk ratio [RRR] 0.15, P = 0.01 and RRR 0.16, P = 0.02) post-intervention, with sustained reductions in severe household food insecurity 16 weeks post-intervention (RRR 0.11, P = 0.01). No statistically significant differences were observed in malnutrition risk, mental well-being, sense of community, or subjective social status post-intervention or 16 weeks post-intervention. CONCLUSIONS: The BC FMNCP reduced short-term household food insecurity but was not found to improve malnutrition risk or psychosocial well-being among adults with low incomes compared with a no-intervention control group.


Asunto(s)
Agricultores , Desnutrición , Adulto , Humanos , Colombia Británica , Inseguridad Alimentaria , Abastecimiento de Alimentos , Encuestas Epidemiológicas , Desnutrición/prevención & control
4.
Prev Med ; 178: 107792, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38052331

RESUMEN

OBJECTIVE: To estimate sex-specific associations (total, direct, and indirect effects) between objectively measured neighbourhood walkability and greenness and objectively measured physical activity and health-related fitness including cardiorespiratory and muscular fitness in Canadian adults. METHODS: Neighbourhood walkability (Canadian Active Living Environment) and greenness (Normalized Difference Vegetation Index; NDVI) data were linked to cardiorespiratory (i.e., submaximal step test estimated V̇O2 max) and muscular fitness (i.e., handgrip strength) and accelerometer measured physical activity; Canadian Health Measures Survey). Covariate-adjusted sex-stratified path analyses was conducted to assess if physical activity (light: LPA; moderate: MPA, and; vigorous: VPA) mediated the associations between neighbourhood walkability, NDVI and health-related fitness. Model sample sizes ranged from 987 to 2796 for males and 989 to 2835 for females. RESULTS: Among males, we found indirect effects between neighbourhood walkability and cardiorespiratory fitness via LPA (negative) and VPA (positive). We also found a total effect (negative) between neighbourhood walkability and grip strength and indirect effects between neighbourhood walkability and handgrip strength via LPA (negative) and MPA (negative). Among females, we found a total effect (positive) and direct effect (positive) between neighbourhood walkability and cardiorespiratory fitness, and an indirect effect for neighbourhood walkability and cardiorespiratory fitness via LPA. We found no significant effects related to neighbourhood greenness. CONCLUSIONS: Residing in a neighbourhood with higher walkability may positively affect cardiorespiratory fitness but negatively affect muscular strength. The negative associations between neighbourhood walkability and LPA may offset potential positive associations between neighbourhood walkability and MPA and VPA and their subsequent influence on health-related fitness.


Asunto(s)
Ejercicio Físico , Fuerza de la Mano , Aptitud Física , Características de la Residencia , Caminata , Adulto , Femenino , Humanos , Masculino , Acelerometría , Canadá , Análisis de Mediación , Población Urbana
5.
Int J Behav Nutr Phys Act ; 20(1): 144, 2023 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-38062460

RESUMEN

BACKGROUND: The growth of urban dwelling populations globally has led to rapid increases of research and policy initiatives addressing associations between the built environment and physical activity (PA). Given this rapid proliferation, it is important to identify priority areas and research questions for moving the field forward. The objective of this study was to identify and compare research priorities on the built environment and PA among researchers and knowledge users (e.g., policy makers, practitioners). METHODS: Between September 2022 and April 2023, a three-round, modified Delphi survey was conducted among two independent panels of international researchers (n = 38) and knowledge users (n = 23) to identify similarities and differences in perceived research priorities on the built environment and PA and generate twin 'top 10' lists of the most important research needs. RESULTS: From a broad range of self-identified issues, both panels ranked in common the most pressing research priorities including stronger study designs such as natural experiments, research that examines inequalities and inequities, establishing the cost effectiveness of interventions, safety and injuries related to engagement in active transportation (AT), and considerations for climate change and climate adaptation. Additional priorities identified by researchers included: implementation science, research that incorporates Indigenous perspectives, land-use policies, built environments that support active aging, and participatory research. Additional priorities identified by knowledge users included: built environments and PA among people living with disabilities and a need for national data on trip chaining, multi-modal travel, and non-work or school-related AT. CONCLUSIONS: Five common research priorities between the two groups emerged, including (1) to better understand causality, (2) interactions with the natural environment, (3) economic evaluations, (4) social disparities, and (5) preventable AT-related injuries. The findings may help set directions for future research, interdisciplinary and intersectoral collaborations, and funding opportunities.


Asunto(s)
Ambiente , Ejercicio Físico , Humanos , Técnica Delphi , Entorno Construido , Proyectos de Investigación
6.
PLoS One ; 18(10): e0292720, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37816011

RESUMEN

The restrictions introduced in response to the COVID-19 pandemic affected the regular routines of Canadians, including access to play and physical activity opportunities, while limiting social connections. In response to this, a recreation centre created take-home play kits that contained loose parts with the aim of facilitating unstructured play. Between August 2021 and January 2022, ten parents participated in semi-structured interviews via telephone or videoconferencing platforms that captured their experiences of the take-home play kits. Using Thematic Analysis, we identified themes and subthemes reflecting parent perceptions and experiences of the take-home play kit. Three themes emerged: (1 A forced renaissance of play; (2) Bringing unstructured play home, and; (3) Parenting is child's play. Parents shared how the pandemic resulted in decreased physical activity and social opportunities for their children. The parents described how the take-home play kits supported unstructured play as well as their perspectives on the importance of unstructured play. Parents in our study suggested that a take-home loose parts play kit could be a useful resource to help engage children in unstructured play in both indoor and outdoor environments.


Asunto(s)
COVID-19 , Pandemias , Humanos , COVID-19/epidemiología , Canadá , Padres , Responsabilidad Parental
7.
J Urban Health ; 100(5): 1024-1031, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37581709

RESUMEN

There is evidence that higher street connectivity and availability of destinations can support walking behavior. However, the availability of data and comparability between previous studies remain a challenge. Based on a large Canadian adult sample, this study examined the associations between street layout and walking behaviors and explored whether objectively measured destinations may mediate these relationships. This study used data from 12,378 adults from Alberta's Tomorrow Project (ATP), a prospective cohort study conducted in Alberta, Canada. Walking behaviors were obtained by questionnaires. Street layout and destination measures were calculated objectively. Covariate-adjusted multivariate linear models estimated the associations between the space syntax street integration and duration of transport and leisure walking. The mediation effects of the availability of destinations in these associations were tested by the structural equation modelling. Street integration was significantly positively associated with transportation walking (b=0.01, 95% CI 0.00, 0.01, p = 0.01) (indirect effect). The availability of destinations partially mediated this association. Using the natural movement theory in space syntax, our study provides insights into using street layouts as a primary measure to (re)design the built environment to support walking.


Asunto(s)
Planificación Ambiental , Características de la Residencia , Adulto , Humanos , Estudios Prospectivos , Canadá , Caminata
8.
Children (Basel) ; 10(6)2023 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-37371280

RESUMEN

Play is a human right, yet opportunities for unstructured play are declining. The COVID-19 pandemic further reduced children's play opportunities. We conducted an observational study of a novel community-based intervention (play hubs) that facilitated unstructured play by offering loose parts in parks (Calgary, Canada) during the pandemic. Our descriptive study included systematic observation using the System for Observing Children's Activity and Relationships During Play (SOCARP) and Tool for Observing Play Outdoors (TOPO) to capture physical activity, play, and social and environment interactions among children participating in the play hubs for 10-weeks in 2021 (n = 160) and 2022 (n = 147). Play hub attendance was low. Most children observed were aged 5 to 12 years (2021: 93% and 2022 98%), with boys and girls represented (2021: 58% male/42% female and 2022: 52% male/48% female). Standing, sitting, and moderate activity were common activities. Physical, exploratory, and expressive play were common, while digital, bio, and rule-based play were less common. Children typically played alone or in small groups and engaged with loose parts or played in the open spaces. The play hubs encouraged unstructured play and promoted positive social interactions among children, despite the challenges of implementing a community-based intervention under pandemic public health restrictions.

9.
PLoS One ; 18(5): e0285397, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37256893

RESUMEN

The neighbourhood built environment can support the physical activity of adults regardless of their individual-level socioeconomic status. However, physical activity supportive (walkable) neighbourhoods may not be accessible to those with lower incomes if homes in walkable neighbourhoods are too expensive. The objectives of this study were: 1) to estimate the associations between neighbourhood walkability and home values in Canadian cities, and 2) to test whether these associations differ by city size and residential property type composition within neighbourhoods. We linked built environment data from the 2016 Canadian Active Living Environments (Can-ALE) index with neighbourhood-level structural home characteristics and sociodemographic data from the 2016 Canadian census for 33,026 neighbourhoods across 31 Census Metropolitan Areas. We used multilevel linear regression models to estimate covariate-adjusted associations between neighbourhood walkability and natural-log median home values and tested city size and neighbourhood property type composition as moderators. There were no statistically significant associations between walkability and home values overall. The associations between neighbourhood walkability and home values were jointly moderated by city size and property type composition. For small and medium sized cities, within neighbourhoods containing a high proportion of detached homes, walkability was negatively associated with home values (b = -0.05, 95% CI: -0.10, -0.01; and, b = -0.04, 95% CI: -0.06, -0.02, for small and medium cities, respectively). However, for extra-large cities, within neighbourhoods containing a high proportion of detached homes, walkability was positively associated with home values (b = 0.06, 95% CI: 0.01, 0.10). Our findings suggest that, based on housing affordability, higher walkable neighbourhoods are likely accessible to lower income households that are situated in small and medium Canadian cities. In larger cities, however, municipal interventions (e.g., inclusionary zoning or targeted development of subsidized or social housing) may be needed to ensure equitable access to walkable neighbourhoods for lower income households.


Asunto(s)
Vivienda , Caminata , Ciudades , Canadá , Ejercicio Físico , Características de la Residencia , Planificación Ambiental
10.
Prev Med ; 173: 107552, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37211251

RESUMEN

Accumulating evidence suggests that the built environment may be associated with cardiovascular disease via its influence on health behaviours. The aim of this study was to estimate the associations between traditional and novel neighbourhood built environment metrics and clinically assessed cardio-metabolic risk factors among a sample of adults in Canada. A total of 7171 participants from Albertas Tomorrow Project living in Alberta, Canada, were included. Cardio-metabolic risk factors were clinically measured. Two composite built environment metrics of traditional walkability and space syntax walkability were calculated. Among men, space syntax walkability was negatively associated with systolic and diastolic blood pressure (b = -0.87, 95% CI -1.43, -0.31 and b = -0.45, 95% CI -0.86, -0.04, respectively). Space syntax walkability was also associated with lower odds of overweight/obese among women and men (OR = 0.93, 95% CI 0.87, 0.99 and OR = 0.88, 95% CI 0.79, 0.97, respectively). No significant associations were observed between traditional walkability and cardio-metabolic outcomes. This study showed that the novel built environment metric based on the space syntax theory was associated with some cardio-metabolic risk factors.


Asunto(s)
Planificación Ambiental , Caminata , Adulto , Masculino , Humanos , Femenino , Caminata/fisiología , Obesidad/epidemiología , Alberta/epidemiología , Factores de Riesgo , Características de la Residencia
11.
Prev Med ; 171: 107497, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37024017

RESUMEN

This study examined the individual and joint effects of modifiable risk factors mediating the associations between socioeconomic position (SEP) and morbidity and mortality from cardiovascular diseases (CVD) in a nationally representative sample of adults in Canada. Participants in the Canadian Community Health Survey (n = 289,800) were followed longitudinally for CVD morbidity and mortality using administrative health and mortality data. SEP was measured as a latent variable consisting of household income and individual educational attainment. Mediators included smoking, physical inactivity, obesity, diabetes and hypertension. The primary outcome was CVD morbidity and mortality, defined as the first fatal/nonfatal CVD event during follow-up (median 6.2 years). Generalized structural equation modeling tested the mediating effects of modifiable risk factors in associations between SEP and CVD in the total population and stratified by sex. Lower SEP was associated with 2.5 times increased odds of CVD morbidity and mortality (OR: 2.52, 95% CI: 2.28, 2.76). Modifiable risk factors mediated 74% of associations between SEP and CVD morbidity and mortality in the total population and were more important mediators of associations in females (83%) than males (62%). Smoking mediated these associations independently and jointly with other mediators. The mediating effects of physical inactivity were through joint mediating effects with obesity, diabetes or hypertension. There were additional joint mediating effects of obesity through diabetes or hypertension in females. Findings point to modifiable risk factors as important targets for interventions along with interventions that target structural determinants of health to reduce socioeconomic inequities in CVD.


Asunto(s)
Enfermedades Cardiovasculares , Diabetes Mellitus , Hipertensión , Adulto , Masculino , Femenino , Humanos , Factores Socioeconómicos , Estudios de Cohortes , Canadá/epidemiología , Factores de Riesgo , Hipertensión/epidemiología , Obesidad/epidemiología , Obesidad/complicaciones , Diabetes Mellitus/epidemiología , Morbilidad
12.
Sci Rep ; 13(1): 3462, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36859468

RESUMEN

Contamination of public parks by dogs is a potential source of conflict among park users, causing "tragedy of the commons" problems. Besides the social conflict, feces can pose serious health risks to both dogs and humans. In this study we analyzed the extent and patterns of the distribution of dog feces in the urban parks of the City of Calgary. We collected dog feces from randomly selected locations in the urban parks. The average density of dog feces by the different dog leash policies of the parks and the distribution pattern of the fecal density within the parks were assessed, and the total contamination of the public parks for the entire city was estimated. We found off-leash parks to be significantly more contaminated than other types of parks. We estimated 127.23 g/ha of dog feces are left unpicked in city parks in total every week. Dog feces were found more often and in greater amount in off-leash parks, and near park entrances and parking lots, than in on-leash parks and away from the park entrances. These results suggest that public park visitors, especially those visiting off-leash parks, are likely to be exposed to large amounts of dog feces. Designation of parks as on-leash and educating dog-owners may be an effective approach for reducing the fecal contamination.


Asunto(s)
Contaminación de Medicamentos , Parques Recreativos , Humanos , Animales , Perros , Heces , Políticas
13.
Am J Clin Nutr ; 117(4): 766-776, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36804420

RESUMEN

BACKGROUND: Adults with low incomes have lower diet quality than their higher income counterparts. In Canada, the British Columbia Farmers' Market Nutrition Coupon Program (FMNCP) provides coupons to low-income households to purchase healthy foods in farmers' markets. OBJECTIVE: The objective of this study was to examine the impact of the FMNCP on the diet quality of adults with low incomes. METHOD: In a pragmatic randomized controlled trial conducted in 2019, adults with low incomes (≥18 y) were randomly assigned either to an FMNCP intervention (n = 143) or a no-intervention control group (n = 142). The FMNCP group received 16 coupon sheets valued at $21 per sheet over 10-15 wk to purchase healthy foods from farmers' markets. Participants completed a questionnaire and 2 24-h dietary recalls at baseline (0 wk), immediately post-intervention (10-15 wk), and 16-wk post-intervention (26-31 wk). Diet quality was calculated using the Healthy Eating Index-2015 (HEI-2015). Linear mixed-effects regression assessed differences in HEI-2015 total (primary outcome) and component scores (secondary outcomes) between the FMNCP and control groups at post-intervention and 16-wk post-intervention. Subgroup analyses examined program impacts by sex and age group (18-59 y, ≥60 y). RESULTS: There were no significant differences in HEI-2015 total scores between the FMNCP and control groups at post-intervention (-0.07; 95% CI: -4.07, 3.93) or 16-wk post-intervention (1.22; 95% CI: -3.00, 5.44) overall or between subgroups. There were no significant between-group differences in HEI-2015 component scores at post-intervention, although there were significant differences in component scores for dairy and fatty acids at 16-wk post-intervention. CONCLUSION: The FMNCP did not significantly improve diet quality among adults with low incomes over the study period. Further research is needed to explore whether higher subsidy amounts or a longer intervention period is needed to meaningfully improve diet quality among adults with low incomes. This trial was registered at [clinicaltrials.gov] as [NCT03952338].


Asunto(s)
Dieta , Agricultores , Adulto , Humanos , Colombia Británica , Pobreza , Renta
14.
J Med Internet Res ; 25: e43549, 2023 02 13.
Artículo en Inglés | MEDLINE | ID: mdl-36780208

RESUMEN

There has been a growing interest in the "metaverse," and discourse about how this platform may contribute to different fields of science is already beginning to emerge. In this paper, we discuss key opportunities and uncertainties about how a metaverse might contribute to advancing knowledge in the interdisciplinary field of the built environment and public health aimed at reducing noncommunicable diseases.


Asunto(s)
Enfermedades no Transmisibles , Salud Pública , Humanos , Entorno Construido , Estudios Interdisciplinarios , Conocimiento
15.
Sci Rep ; 13(1): 1180, 2023 01 20.
Artículo en Inglés | MEDLINE | ID: mdl-36670182

RESUMEN

High-quality sleep is an important factor in sustaining health and improving well-being. Previous evidence has demonstrated the positive associations between increased physical activity and reduced sedentary behaviour (SB) with sleep quality. The substitutional relationships between SB, light-intensity physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) need to be considered when examining how a particular behaviour may impact sleep quality. No studies, to our knowledge, have explored these substitutional relationships in middle-aged adulthood. Using an isotemporal substitution approach, this study examined the associations of replacing sedentary time with physical activity on sleep quality measures in a sample of middle-aged adults in Japan. Data from 683 adults aged 40-64 living in Japan were used. The average daily time spent in SB, LPA, and MVPA was objectively assessed by accelerometers. Two self-reported sleep quality measures were obtained using questionnaires, including rest by sleep and sleep quality. Multivariable linear regression models were used to assess the associations of SB, LPA, and MVPA with the sleep quality measures stratified by gender. We found that each 60 min unit of SB or LPA replaced with MVPA was favourably associated with rest by sleep among women (ß = 0.16, 95% CI 0.07, 0.28, p < 0.001; ß = 0.18, 95% CI 0.07, 0.32, p < 0.05, respectively). There were no significant associations between SB, LPA, and MVPA with sleep measures in men across all three models. These findings indicate that higher MVPA has a positive association with sleep quality in middle-aged women.


Asunto(s)
Conducta Sedentaria , Calidad del Sueño , Masculino , Adulto , Persona de Mediana Edad , Humanos , Femenino , Ejercicio Físico , Sueño , Descanso , Acelerometría
16.
PLoS One ; 17(12): e0278596, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36455004

RESUMEN

BACKGROUND: Pedometer-facilitated interventions encourage physical activity via the accumulation of steps. Mixed evidence suggests that neighborhood walkability might influence the effectiveness of physical activity interventions, including pedometer-facilitated interventions. Our study investigated the moderating effect of neighborhood walkability on immediate (4-week) and short-term (12-week) changes in self-reported neighborhood-specific leisure and transportation walking, leisure-based moderate and vigorous-intensity physical activity, and leisure-based screen time during a pedometer-facilitated intervention (UWALK). METHODS: This quasi-experiment undertaken in Calgary (Canada) compared behavior changes during the 12-week intervention between two neighborhood groups classified as 'walkable' or 'car dependent' based on Walk Score®. Of the 573 volunteers (adults in the contemplation and preparation stages of physical activity behavior change), 466 participated in UWALK. Surveys captured sociodemographic characteristics, perceived neighborhood walkability, neighborhood preferences, motivation, physical activity and screen-based leisure. Covariate-adjusted linear mixed models estimated the differences in physical activity and leisure screen time between the neighborhood walkability groups at baseline, 4-weeks, and 12-weeks. RESULTS: UWALK participants included mostly females (83%) and had an average age of 49.2 years. Weekly minutes of walking for transport inside the neighborhood was higher (p < .001) among participants from walkable versus car dependent neighborhoods at baseline (42.5 vs. 21.1), 4-weeks (81.2 vs. 48.2), and 12-weeks (87.2 vs. 48.0). Regardless of neighborhood walkability, all physical activity outcomes were higher and leisure screen time lower at 4-weeks and 12-weeks compared with baseline. We found no significant neighborhood group by time interactions. CONCLUSIONS: Pedometer-facilitated interventions may be effective for supporting short-term changes in physical activity and sedentary behavior even among adults residing in low walkable neighborhoods.


Asunto(s)
Actigrafía , Conducta Sedentaria , Adulto , Femenino , Humanos , Persona de Mediana Edad , Masculino , Ejercicio Físico , Tiempo de Pantalla , Caminata
17.
Sci Rep ; 12(1): 18848, 2022 11 07.
Artículo en Inglés | MEDLINE | ID: mdl-36344564

RESUMEN

Understanding the correlates of sedentary behavior among children is essential in developing effective interventions to reduce sitting time in this vulnerable population. This study aimed to identify correlates of domain-specific sedentary behaviors and objectively assessed sedentary time among a sample of children in Japan. Data from 343 children (aged 6-12 years) living in Japan were used. Domain-specific sedentary behaviors were assessed using a questionnaire. Total sedentary time was estimated using hip-worn accelerometers. Twenty-two potential correlates across five categories (parental characteristics, household indoor environment, residential neighborhood environment, school environment, and school neighborhood environment) were included. Multivariable linear regression models were used to identify correlates of domain-specific sedentary behaviors and objectively assessed sedentary time. Eight correlates were significantly associated with children's domain-specific sedentary behaviors: mother's and father's age, mother's educational level, having a video/DVD recorder/player, having a video console, having a TV one's own room, home's Walk Score®, and pedestrian/cycling safety. No significant associations were found between potential correlates and accelerometer-based total sedentary time. These findings highlight that strategies to reduce children's sedentary time should consider the context of these behaviors. For example, urban design attributes such as perceived pedestrian and cycling safety can be improved to reduce children's car sitting time.


Asunto(s)
Ejercicio Físico , Conducta Sedentaria , Niño , Humanos , Instituciones Académicas , Características de la Residencia , Medio Social
18.
Sci Rep ; 12(1): 18380, 2022 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-36319661

RESUMEN

New 'big data' streams such as street-level imagery are offering unprecedented possibilities for developing health-relevant data on the urban environment. Urban environmental features derived from street-level imagery have been used to assess pedestrian-friendly neighbourhood design and to predict active commuting, but few such studies have been conducted in Canada. Using 1.15 million Google Street View (GSV) images in seven Canadian cities, we applied image segmentation and object detection computer vision methods to extract data on persons, bicycles, buildings, sidewalks, open sky (without trees or buildings), and vegetation at postal codes. The associations between urban features and walk-to-work rates obtained from the Canadian Census were assessed. We also assessed how GSV-derived urban features perform in predicting walk-to-work rates relative to more widely used walkability measures. Results showed that features derived from street-level images are better able to predict the percent of people walking to work as their primary mode of transportation compared to data derived from traditional walkability metrics. Given the increasing coverage of street-level imagery around the world, there is considerable potential for machine learning and computer vision to help researchers study patterns of active transportation and other health-related behaviours and exposures.


Asunto(s)
Aprendizaje Profundo , Planificación Ambiental , Humanos , Ciudades , Canadá , Caminata , Características de la Residencia
19.
Int J Behav Nutr Phys Act ; 19(1): 124, 2022 09 24.
Artículo en Inglés | MEDLINE | ID: mdl-36153538

RESUMEN

BACKGROUND: There is increasing evidence demonstrating the importance of the neighbourhood built environment in supporting physical activity. Physical activity provides numerous health benefits including improvements in health-related fitness (i.e., muscular, cardiorespiratory, motor, and morphological fitness). Emerging evidence also suggests that the neighbourhood built environment is associated with health-related fitness. Our aim was to summarize evidence on the associations between the neighbourhood built environment and components of health-related fitness in adults. METHODS: We undertook a systematic review following PRISMA guidelines. Our data sources included electronic searches in MEDLINE, Embase, CINAHL, Web of Science, SPORTDiscus, Environment Complete, ProQuest Dissertations and Theses, and Transport Research International Documentation from inception to March 2021. Our eligibility criteria consisted of observational and experimental studies estimating associations between the neighbourhood built environment and health-related fitness among healthy adults (age ≥ 18 years). Eligible studies included objective or self-reported measures of the neighbourhood built environment and included either objective or self-reported measures of health-related fitness. Data extraction included study design, sample characteristics, measured neighbourhood built environment characteristics, and measured components of health-related fitness. We used individual Joanna Briggs Institute study checklists based on identified study designs. Our primary outcome measure was components of health-related fitness (muscular; cardiorespiratory; motor, and morphological fitness). RESULTS: Twenty-seven studies (sample sizes = 28 to 419,562; 2002 to 2020) met the eligibility criteria. Neighbourhood destinations were the most consistent built environment correlate across all components of health-related fitness. The greatest number of significant associations was found between the neighbourhood built environment and morphological fitness while the lowest number of associations was found for motor fitness. The neighbourhood built environment was consistently associated with health-related fitness in studies that adjusted for physical activity. CONCLUSION: The neighbourhood built environment is associated with health-related fitness in adults and these associations may be independent of physical activity. Longitudinal studies that adjust for physical activity (including resistance training) and sedentary behaviour, and residential self-selection are needed to obtain rigorous causal evidence for the link between the neighbourhood built environment and health-related fitness. TRIAL REGISTRATION: Protocol registration: PROSPERO number CRD42020179807.


Asunto(s)
Entorno Construido , Características de la Residencia , Adolescente , Adulto , Planificación Ambiental , Ejercicio Físico , Humanos , Autoinforme
20.
Int J Behav Nutr Phys Act ; 19(1): 86, 2022 07 14.
Artículo en Inglés | MEDLINE | ID: mdl-35836196

RESUMEN

BACKGROUND: A diverse range of interventions increase physical activity (PA) but few studies have explored the contextual factors that may be associated with intervention effectiveness. The built environment (BE) may enhance or reduce the effectiveness of PA interventions, especially interventions that encourage PA in neighbourhood settings. Several studies have investigated the effects of the neighbourhood BE on intervention-facilitated PA, however, a comprehensive review of evidence has yet to be conducted. In our systematic review, we synthesize evidence from quantitative studies that have examined the relationships between objectively-measured neighbourhood BE and intervention-facilitated PA in adults. METHOD: In October 2021, we searched 7 databases (Medline, CINAHL, Embase, Web of Science, SPORTDiscus, Environment Complete, and Cochrane Central Register of Controlled Trials) for English-language studies reporting on randomized and non-randomized experiments of physical activity interventions involving adults (≥18 years) and that estimated the association between objectively-measured BE and intervention-facilitated physical activity. RESULTS: Twenty articles, published between 2009 and 2021, were eligible for inclusion in the review. Among the 20 articles in this review, 13 included multi-arm experiments and 7 included single-arm experiments. Three studies examined PA interventions delivered at the population level and 17 examined interventions delivered at the individual level. PA intervention characteristics were heterogeneous and one-half of the interventions were implemented for at least 12-months (n = 10). Most studies were undertaken in North America (n = 11) and most studies (n = 14) included samples from populations identified as at risk of poor health (i.e., metabolic disorders, coronary heart disease, overweight, cancer, high blood pressure, and inactivity). Fourteen studies found evidence of a neighbourhood BE variable being negatively or positively associated with intervention-facilitated PA. CONCLUSION: Approximately 70% of all studies reviewed found evidence for an association between a BE variable and intervention-facilitated PA. The BE's potential to enhance or constrain the effectiveness of PA interventions should be considered in their design and implementation.


Asunto(s)
Ejercicio Físico , Conducta Sedentaria , Adulto , Entorno Construido , Humanos
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