Association of Light Exposure on Physical Activity and Sedentary Time in Young People
Background: To investigate whether light exposure was associated with objectively measured physical activity (PA) and sedentary behaviour in young people. Methods: Participants (n = 229, 46.7% female) were young people (mean 8.8 years [SD ± 2.2]) from the borough of Camden, UK. Daily sedentary time...
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doaj-04610870d94e4f668c1dd2be1859396f2020-11-24T22:34:17ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012015-03-011232941294910.3390/ijerph120302941ijerph120302941Association of Light Exposure on Physical Activity and Sedentary Time in Young PeopleDaniel Aggio0Lee Smith1Abigail Fisher2Mark Hamer3Health Behaviour Research Centre, University College London, London WC1E6BT, UKHealth Behaviour Research Centre, University College London, London WC1E6BT, UKHealth Behaviour Research Centre, University College London, London WC1E6BT, UKPhysical Activity Research Group, Department of Epidemiology and Public Health, University College London, London WC1E6BT, UKBackground: To investigate whether light exposure was associated with objectively measured physical activity (PA) and sedentary behaviour in young people. Methods: Participants (n = 229, 46.7% female) were young people (mean 8.8 years [SD ± 2.2]) from the borough of Camden, UK. Daily sedentary time, moderate and vigorous PA (MVPA) and light exposure were measured using a tri-axial accelerometer with an ambient light sensor during the summer. Multiple linear regression models examined associations between average daily light exposure, sedentary time and time in MVPA. Models were repeated investigating weekdays and weekend days separately. Analyses were adjusted for pre-specified covariables, including age, sex, device wear time, ethnic group, school and body fat. Results: There were significant associations between average daily light exposure and time sedentary (β coefficient = −11.2, 95% CI, −19.0 to −3.4) and in MVPA (β coefficient = 3.5, 95% CI, 1.2 to 5.9). Light exposure was significantly associated with weekend sedentary time (β coefficient = −10.0, 95% CI, −17.6, −2.4), weekend MVPA (β coefficient = 3.7, 95% CI, 1.7, 5.7), weekday sedentary time (β coefficient = −15.0, 95% CI, −22.7 to −7.2), but not weekday MVPA (β coefficient = 2.0, 95% CI, −0.5 to 4.5). Conclusion: Average daily light exposure is positively associated with time in MVPA and negatively associated with sedentary time. Increasing daylight exposure may be a useful intervention strategy for promoting physical activity.http://www.mdpi.com/1660-4601/12/3/2941Accelerometrysitting timeadolescentschildrenoutdoors |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daniel Aggio Lee Smith Abigail Fisher Mark Hamer |
spellingShingle |
Daniel Aggio Lee Smith Abigail Fisher Mark Hamer Association of Light Exposure on Physical Activity and Sedentary Time in Young People International Journal of Environmental Research and Public Health Accelerometry sitting time adolescents children outdoors |
author_facet |
Daniel Aggio Lee Smith Abigail Fisher Mark Hamer |
author_sort |
Daniel Aggio |
title |
Association of Light Exposure on Physical Activity and Sedentary Time in Young People |
title_short |
Association of Light Exposure on Physical Activity and Sedentary Time in Young People |
title_full |
Association of Light Exposure on Physical Activity and Sedentary Time in Young People |
title_fullStr |
Association of Light Exposure on Physical Activity and Sedentary Time in Young People |
title_full_unstemmed |
Association of Light Exposure on Physical Activity and Sedentary Time in Young People |
title_sort |
association of light exposure on physical activity and sedentary time in young people |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1660-4601 |
publishDate |
2015-03-01 |
description |
Background: To investigate whether light exposure was associated with objectively measured physical activity (PA) and sedentary behaviour in young people. Methods: Participants (n = 229, 46.7% female) were young people (mean 8.8 years [SD ± 2.2]) from the borough of Camden, UK. Daily sedentary time, moderate and vigorous PA (MVPA) and light exposure were measured using a tri-axial accelerometer with an ambient light sensor during the summer. Multiple linear regression models examined associations between average daily light exposure, sedentary time and time in MVPA. Models were repeated investigating weekdays and weekend days separately. Analyses were adjusted for pre-specified covariables, including age, sex, device wear time, ethnic group, school and body fat. Results: There were significant associations between average daily light exposure and time sedentary (β coefficient = −11.2, 95% CI, −19.0 to −3.4) and in MVPA (β coefficient = 3.5, 95% CI, 1.2 to 5.9). Light exposure was significantly associated with weekend sedentary time (β coefficient = −10.0, 95% CI, −17.6, −2.4), weekend MVPA (β coefficient = 3.7, 95% CI, 1.7, 5.7), weekday sedentary time (β coefficient = −15.0, 95% CI, −22.7 to −7.2), but not weekday MVPA (β coefficient = 2.0, 95% CI, −0.5 to 4.5). Conclusion: Average daily light exposure is positively associated with time in MVPA and negatively associated with sedentary time. Increasing daylight exposure may be a useful intervention strategy for promoting physical activity. |
topic |
Accelerometry sitting time adolescents children outdoors |
url |
http://www.mdpi.com/1660-4601/12/3/2941 |
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