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Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study

BACKGROUND: Much attention has been paid to adolescents' screen time, however very few studies have examined non-screen sedentary time (NSST). This study aimed to (1) describe the magnitude and composition of screen sedentary time (SST) and NSST in Australian adolescents, (2) describe the socio...

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Autores principales: Olds, Tim S, Maher, Carol A, Ridley, Kate, Kittel, Daniella M
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024298/
https://www.ncbi.nlm.nih.gov/pubmed/21194427
http://dx.doi.org/10.1186/1479-5868-7-92
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author Olds, Tim S
Maher, Carol A
Ridley, Kate
Kittel, Daniella M
author_facet Olds, Tim S
Maher, Carol A
Ridley, Kate
Kittel, Daniella M
author_sort Olds, Tim S
collection PubMed
description BACKGROUND: Much attention has been paid to adolescents' screen time, however very few studies have examined non-screen sedentary time (NSST). This study aimed to (1) describe the magnitude and composition of screen sedentary time (SST) and NSST in Australian adolescents, (2) describe the socio-demographic correlates of SST and NSST, and (3) determine whether screen time is an adequate surrogate for total sedentary behaviour in this population. METHODS: 2200 9-16 year old Australians provided detailed use of time data for four days. Non-screen sedentary time (NSST) included time spent participating in activities expected to elicit <3 METs whilst seated or lying down (other than sleeping), excluding screen-based activities (television, playing videogames or using computers). Total sedentary time was the sum of screen time and NSST. RESULTS: Adolescents spent a mean (SD) of 345 (105) minutes/day in NSST, which constituted 60% of total sedentary time. School activities contributed 42% of NSST, socialising 19%, self-care (mainly eating) 16%, and passive transport 15%. Screen time and NSST showed opposite patterns in relation to key socio-demographic characteristics, including sex, age, weight status, household income, parental education and day type. Because screen time was negatively correlated with NSST (r = -0.58), and exhibited a moderate correlation (r = 0.53) with total sedentary time, screen time was only a moderately effective surrogate for total sedentary time. CONCLUSIONS: To capture a complete picture of young people's sedentary time, studies should endeavour to measure both screen time and NSST.
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spelling pubmed-30242982011-01-21 Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study Olds, Tim S Maher, Carol A Ridley, Kate Kittel, Daniella M Int J Behav Nutr Phys Act Research BACKGROUND: Much attention has been paid to adolescents' screen time, however very few studies have examined non-screen sedentary time (NSST). This study aimed to (1) describe the magnitude and composition of screen sedentary time (SST) and NSST in Australian adolescents, (2) describe the socio-demographic correlates of SST and NSST, and (3) determine whether screen time is an adequate surrogate for total sedentary behaviour in this population. METHODS: 2200 9-16 year old Australians provided detailed use of time data for four days. Non-screen sedentary time (NSST) included time spent participating in activities expected to elicit <3 METs whilst seated or lying down (other than sleeping), excluding screen-based activities (television, playing videogames or using computers). Total sedentary time was the sum of screen time and NSST. RESULTS: Adolescents spent a mean (SD) of 345 (105) minutes/day in NSST, which constituted 60% of total sedentary time. School activities contributed 42% of NSST, socialising 19%, self-care (mainly eating) 16%, and passive transport 15%. Screen time and NSST showed opposite patterns in relation to key socio-demographic characteristics, including sex, age, weight status, household income, parental education and day type. Because screen time was negatively correlated with NSST (r = -0.58), and exhibited a moderate correlation (r = 0.53) with total sedentary time, screen time was only a moderately effective surrogate for total sedentary time. CONCLUSIONS: To capture a complete picture of young people's sedentary time, studies should endeavour to measure both screen time and NSST. BioMed Central 2010-12-31 /pmc/articles/PMC3024298/ /pubmed/21194427 http://dx.doi.org/10.1186/1479-5868-7-92 Text en Copyright ©2010 Olds et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (<url>http://creativecommons.org/licenses/by/2.0</url>), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Olds, Tim S
Maher, Carol A
Ridley, Kate
Kittel, Daniella M
Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title_full Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title_fullStr Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title_full_unstemmed Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title_short Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
title_sort descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional study
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024298/
https://www.ncbi.nlm.nih.gov/pubmed/21194427
http://dx.doi.org/10.1186/1479-5868-7-92
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