Objectively measured physical activity and sedentary time in youth: the International children's accelerometry database (ICAD)

Ashley R. Cooper, Anna Goodman, Angie S. Page, Lauren B. Sherar, Dale W. Esliger, Esther M F van Sluijs, Lars Bo Andersen, Sigmund Anderssen, Greet Cardon, Rachel Davey, Karsten Froberg, Pedro Hallal, Kathleen F. Janz, Katarzyna Kordas, Susi Kreimler, Russ R. Pate, Jardena J. Puder, John J. Reilly, Jo Salmon, Luis B. Sardinha & 2 others Anna Timperio, Ulf Ekelund

Research output: Contribution to journalArticle

202 Citations (Scopus)

Abstract

Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time patterns in youth. Methods: The International Children's Accelerometry Database (ICAD) consists of ActiGraph accelerometer data from 20 studies in ten countries, processed using common data reduction procedures. Analyses were conducted on 27,637 participants (2.8-18.4 years) who provided at least three days of valid accelerometer data. Linear regression was used to examine associations between age, sex, weight status, country and physical activity outcomes. Results: Boys were less sedentary and more active than girls at all ages. After 5 years of age there was an average cross-sectional decrease of 4.2 % in total physical activity with each additional year of age, due mainly to lower levels of light-intensity physical activity and greater time spent sedentary. Physical activity did not differ by weight status in the youngest children, but from age seven onwards, overweight/obese participants were less active than their normal weight counterparts. Physical activity varied between samples from different countries, with a 15-20 % difference between the highest and lowest countries at age 9-10 and a 26-28 % difference at age 12-13. Conclusions: Physical activity differed between samples from different countries, but the associations between demographic characteristics and physical activity were consistently observed. Further research is needed to explore environmental and sociocultural explanations for these differences.

LanguageEnglish
Article number113
Pages1-10
Number of pages10
JournalInternational Journal of Behavioral Nutrition and Physical Activity
Volume12
Issue number1
DOIs
Publication statusPublished - 17 Sep 2015

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Accelerometry
Databases
Exercise
Weights and Measures
Linear Models
Demography
Light

Keywords

  • accelerometer
  • adolescents
  • children
  • physical activity
  • sedentary

Cite this

Cooper, Ashley R. ; Goodman, Anna ; Page, Angie S. ; Sherar, Lauren B. ; Esliger, Dale W. ; van Sluijs, Esther M F ; Andersen, Lars Bo ; Anderssen, Sigmund ; Cardon, Greet ; Davey, Rachel ; Froberg, Karsten ; Hallal, Pedro ; Janz, Kathleen F. ; Kordas, Katarzyna ; Kreimler, Susi ; Pate, Russ R. ; Puder, Jardena J. ; Reilly, John J. ; Salmon, Jo ; Sardinha, Luis B. ; Timperio, Anna ; Ekelund, Ulf. / Objectively measured physical activity and sedentary time in youth : the International children's accelerometry database (ICAD). In: International Journal of Behavioral Nutrition and Physical Activity. 2015 ; Vol. 12, No. 1. pp. 1-10.
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abstract = "Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time patterns in youth. Methods: The International Children's Accelerometry Database (ICAD) consists of ActiGraph accelerometer data from 20 studies in ten countries, processed using common data reduction procedures. Analyses were conducted on 27,637 participants (2.8-18.4 years) who provided at least three days of valid accelerometer data. Linear regression was used to examine associations between age, sex, weight status, country and physical activity outcomes. Results: Boys were less sedentary and more active than girls at all ages. After 5 years of age there was an average cross-sectional decrease of 4.2 {\%} in total physical activity with each additional year of age, due mainly to lower levels of light-intensity physical activity and greater time spent sedentary. Physical activity did not differ by weight status in the youngest children, but from age seven onwards, overweight/obese participants were less active than their normal weight counterparts. Physical activity varied between samples from different countries, with a 15-20 {\%} difference between the highest and lowest countries at age 9-10 and a 26-28 {\%} difference at age 12-13. Conclusions: Physical activity differed between samples from different countries, but the associations between demographic characteristics and physical activity were consistently observed. Further research is needed to explore environmental and sociocultural explanations for these differences.",
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author = "Cooper, {Ashley R.} and Anna Goodman and Page, {Angie S.} and Sherar, {Lauren B.} and Esliger, {Dale W.} and {van Sluijs}, {Esther M F} and Andersen, {Lars Bo} and Sigmund Anderssen and Greet Cardon and Rachel Davey and Karsten Froberg and Pedro Hallal and Janz, {Kathleen F.} and Katarzyna Kordas and Susi Kreimler and Pate, {Russ R.} and Puder, {Jardena J.} and Reilly, {John J.} and Jo Salmon and Sardinha, {Luis B.} and Anna Timperio and Ulf Ekelund",
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Cooper, AR, Goodman, A, Page, AS, Sherar, LB, Esliger, DW, van Sluijs, EMF, Andersen, LB, Anderssen, S, Cardon, G, Davey, R, Froberg, K, Hallal, P, Janz, KF, Kordas, K, Kreimler, S, Pate, RR, Puder, JJ, Reilly, JJ, Salmon, J, Sardinha, LB, Timperio, A & Ekelund, U 2015, 'Objectively measured physical activity and sedentary time in youth: the International children's accelerometry database (ICAD)' International Journal of Behavioral Nutrition and Physical Activity, vol. 12, no. 1, 113, pp. 1-10. https://doi.org/10.1186/s12966-015-0274-5

Objectively measured physical activity and sedentary time in youth : the International children's accelerometry database (ICAD). / Cooper, Ashley R.; Goodman, Anna; Page, Angie S.; Sherar, Lauren B.; Esliger, Dale W.; van Sluijs, Esther M F; Andersen, Lars Bo; Anderssen, Sigmund; Cardon, Greet; Davey, Rachel; Froberg, Karsten; Hallal, Pedro; Janz, Kathleen F.; Kordas, Katarzyna; Kreimler, Susi; Pate, Russ R.; Puder, Jardena J.; Reilly, John J.; Salmon, Jo; Sardinha, Luis B.; Timperio, Anna; Ekelund, Ulf.

In: International Journal of Behavioral Nutrition and Physical Activity, Vol. 12, No. 1, 113, 17.09.2015, p. 1-10.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Objectively measured physical activity and sedentary time in youth

T2 - International Journal of Behavioral Nutrition and Physical Activity

AU - Cooper, Ashley R.

AU - Goodman, Anna

AU - Page, Angie S.

AU - Sherar, Lauren B.

AU - Esliger, Dale W.

AU - van Sluijs, Esther M F

AU - Andersen, Lars Bo

AU - Anderssen, Sigmund

AU - Cardon, Greet

AU - Davey, Rachel

AU - Froberg, Karsten

AU - Hallal, Pedro

AU - Janz, Kathleen F.

AU - Kordas, Katarzyna

AU - Kreimler, Susi

AU - Pate, Russ R.

AU - Puder, Jardena J.

AU - Reilly, John J.

AU - Salmon, Jo

AU - Sardinha, Luis B.

AU - Timperio, Anna

AU - Ekelund, Ulf

PY - 2015/9/17

Y1 - 2015/9/17

N2 - Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time patterns in youth. Methods: The International Children's Accelerometry Database (ICAD) consists of ActiGraph accelerometer data from 20 studies in ten countries, processed using common data reduction procedures. Analyses were conducted on 27,637 participants (2.8-18.4 years) who provided at least three days of valid accelerometer data. Linear regression was used to examine associations between age, sex, weight status, country and physical activity outcomes. Results: Boys were less sedentary and more active than girls at all ages. After 5 years of age there was an average cross-sectional decrease of 4.2 % in total physical activity with each additional year of age, due mainly to lower levels of light-intensity physical activity and greater time spent sedentary. Physical activity did not differ by weight status in the youngest children, but from age seven onwards, overweight/obese participants were less active than their normal weight counterparts. Physical activity varied between samples from different countries, with a 15-20 % difference between the highest and lowest countries at age 9-10 and a 26-28 % difference at age 12-13. Conclusions: Physical activity differed between samples from different countries, but the associations between demographic characteristics and physical activity were consistently observed. Further research is needed to explore environmental and sociocultural explanations for these differences.

AB - Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time patterns in youth. Methods: The International Children's Accelerometry Database (ICAD) consists of ActiGraph accelerometer data from 20 studies in ten countries, processed using common data reduction procedures. Analyses were conducted on 27,637 participants (2.8-18.4 years) who provided at least three days of valid accelerometer data. Linear regression was used to examine associations between age, sex, weight status, country and physical activity outcomes. Results: Boys were less sedentary and more active than girls at all ages. After 5 years of age there was an average cross-sectional decrease of 4.2 % in total physical activity with each additional year of age, due mainly to lower levels of light-intensity physical activity and greater time spent sedentary. Physical activity did not differ by weight status in the youngest children, but from age seven onwards, overweight/obese participants were less active than their normal weight counterparts. Physical activity varied between samples from different countries, with a 15-20 % difference between the highest and lowest countries at age 9-10 and a 26-28 % difference at age 12-13. Conclusions: Physical activity differed between samples from different countries, but the associations between demographic characteristics and physical activity were consistently observed. Further research is needed to explore environmental and sociocultural explanations for these differences.

KW - accelerometer

KW - adolescents

KW - children

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