Associations between daily ambient temperature and sedentary time among children 4-6 years old in Mexico City.

Autor: Wong S; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America., Cantoral A; Centro de Investigacion en Nutrición y Salud, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico., Téllez-Rojo MM; Centro de Investigacion en Nutrición y Salud, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico., Pantic I; Department of Developmental Neurobiology, National Institute of Perinatology, Mexico City, Mexico., Oken E; Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States of America., Svensson K; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America., Dorman M; Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer-Sheva, Israel., Gutiérrez-Avila I; Centro de Investigacion en Nutrición y Salud, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico., Rush J; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America., McRae N; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America., Wright RO; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America., Baccarelli AA; Columbia University Mailman School of Public Health, New York, New York, United States of America., Kloog I; Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer-Sheva, Israel., Just AC; Department of Environmental Medicine & Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2020 Oct 30; Vol. 15 (10), pp. e0241446. Date of Electronic Publication: 2020 Oct 30 (Print Publication: 2020).
DOI: 10.1371/journal.pone.0241446
Abstrakt: Background: Sedentary behavior is a worldwide public health concern. There is consistent and growing evidence linking sedentary behavior to mortality and morbidity. Early monitoring and assessment of environmental factors associated with sedentary behaviors at a young age are important initial steps for understanding children's sedentary time and identifying pertinent interventions.
Objective: This study examines the association between daily temperature (maximum, mean, minimum, and diurnal variation) and all-day sedentary time among 4-6 year old children in Mexico City (n = 559) from the year 2013 to 2015.
Methods: We developed a spatiotemporally resolved hybrid satellite-based land use regression temperature model and calculated percent daily sedentary time from aggregating 10-second epoch vertical counts captured by accelerometers that participants wore for one week. We modeled generalized additive models (GAMs), one for each temperature type as a covariate (maximum, mean, minimum, and diurnal variation). All GAMs included percent all-day sedentary time as the outcome and participant-level random intercepts to account for repeated measures of sedentary time. Our models were adjusted for demographic factors and environmental exposures.
Results: Daily maximum temperature, mean temperature, and diurnal variation have significant negative linear relationships with all-day sedentary time (p<0.01). There is no significant association between daily minimum temperature and all-day sedentary time. Children have on average 0.26% less daily sedentary time (approximately 2.2 minutes) for each 1°C increase in ambient maximum temperature (range 7.1-30.2°C), 0.27% less daily sedentary time (approximately 2.3 minutes) for each 1°C increase in ambient mean temperature (range 4.3-22.2°C), and 0.23% less daily sedentary time (approximately 2.0 minutes) for each 1°C increase in diurnal variation (range 3.0-21.6°C).
Conclusions: These results are contrary to our hypothesis in which we expected a curvilinear relationship between temperature (maximum, mean, minimum, and diurnal variation) and sedentary time. Our findings suggest that temperature is an important environmental factor that influences children's sedentary behavior.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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