Dataset Information

Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children's Accelerometry database (ICAD).

ABSTRACT:

Background

Evidence on the association between sitting for extended periods (i.e. prolonged sedentary time (PST)) and cardio-metabolic health is inconsistent in children. We aimed to estimate the differences in cardio-metabolic health associated with substituting PST with non-prolonged sedentary time (non-PST), light (LIPA) or moderate-to-vigorous physical activity (MVPA) in children.

Methods

Cross-sectional data from 14 studies (7 countries) in the International Children's Accelerometry Database (ICAD, 1998-2009) was included. Accelerometry in 19,502 participants aged 3-18?years, together with covariate and outcome data, was pooled and harmonized. Iso-temporal substitution in linear regression models provided beta coefficients (95%CI) for substitution of 1?h/day PST (sedentary time accumulated in bouts >?15?min) with non-PST, LIPA or MVPA, for each study, which were meta-analysed.

Results

Modelling substitution of 1?h/day of PST with non-PST suggested reductions in standardized BMI, but estimates were?>?7-fold greater for substitution with MVPA (-?0.44 (-?0.62; -?0.26) SD units). Only reallocation by MVPA was beneficial for waist circumference (-?3.07 (-?4.47; -?1.68) cm), systolic blood pressure (-?1.53 (-?2.42; -?0.65) mmHg) and clustered cardio-metabolic risk (-?0.18 (-?0.3; -?0.1) SD units). For HDL-cholesterol and diastolic blood pressure, substitution with LIPA was beneficial; however, substitution with MVPA showed 5-fold stronger effect estimates (HDL-cholesterol: 0.05 (0.01; 0.10) mmol/l); diastolic blood pressure: -?0.81 (-?1.38; -?0.24) mmHg).

Conclusions

Replacement of PST with MVPA may be the preferred scenario for behaviour change, given beneficial associations with a wide range of cardio-metabolic risk factors (including adiposity, HDL-cholesterol, blood pressure and clustered cardio-metabolic risk). Effect estimates are clinically relevant (e.g. an estimated reduction in waist circumference of ?1.5?cm for 30?min/day replacement). Replacement with LIPA could be beneficial for some of these risk factors, however with substantially lower effect estimates.

SUBMITTER: Wijndaele K

PROVIDER: S-EPMC6822444 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Publications

Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children's Accelerometry database (ICAD).

Wijndaele Katrien K White Thomas T Andersen Lars Bo LB Bugge Anna A Kolle Elin E Northstone Kate K Wedderkopp Niels N Ried-Larsen Mathias M Kriemler Susi S Page Angie S AS Puder Jardena J JJ Reilly John J JJ Sardinha Luis B LB van Sluijs Esther M F EMF Sharp Stephen J SJ Brage Søren S Ekelund Ulf U

The international journal of behavioral nutrition and physical activity 20191031 1

<h4>Background</h4>Evidence on the association between sitting for extended periods (i.e. prolonged sedentary time (PST)) and cardio-metabolic health is inconsistent in children. We aimed to estimate the differences in cardio-metabolic health associated with substituting PST with non-prolonged sedentary time (non-PST), light (LIPA) or moderate-to-vigorous physical activity (MVPA) in children.<h4>Methods</h4>Cross-sectional data from 14 studies (7 countries) in the International Children's Accele ...[more]

PMID: 31672163

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Dataset Information

Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children's Accelerometry database (ICAD).

Background

Methods

Results

Conclusions

Publications

Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children's Accelerometry database (ICAD).

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