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

Ashley Cooper, Anna Goodman, Angie Page, Lauren Sherar, D Esliger, Esther Van Sluijs, Lars Andersen, Sigmund Anderssen, G Cardon, Rachel DAVEY, Karsten Froberg, Pedro Hallal, Kathleen Janz, Katarzyna Kordas, S Kreimler, Russell Pate, J Puder, J Reilly, Jo Salmon, Luis 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.
    Original languageEnglish
    Article number113
    Pages (from-to)1-10
    Number of pages10
    JournalThe International Journal of Behavioral Nutrition and Physical Activity
    Volume12
    Issue number1
    DOIs
    Publication statusPublished - 2015

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    Cooper, Ashley ; Goodman, Anna ; Page, Angie ; Sherar, Lauren ; Esliger, D ; Van Sluijs, Esther ; Andersen, Lars ; Anderssen, Sigmund ; Cardon, G ; DAVEY, Rachel ; Froberg, Karsten ; Hallal, Pedro ; Janz, Kathleen ; Kordas, Katarzyna ; Kreimler, S ; Pate, Russell ; Puder, J ; Reilly, J ; Salmon, Jo ; Sardinha, Luis ; Timperio, Anna ; Ekelund, Ulf. / Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD). In: The International Journal of Behavioral Nutrition and Physical Activity. 2015 ; Vol. 12, No. 1. pp. 1-10.
    @article{3776fd43eea046a68062ce885c8cb915,
    title = "Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD)",
    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 = "Ashley Cooper and Anna Goodman and Angie Page and Lauren Sherar and D Esliger and {Van Sluijs}, Esther and Lars Andersen and Sigmund Anderssen and G Cardon and Rachel DAVEY and Karsten Froberg and Pedro Hallal and Kathleen Janz and Katarzyna Kordas and S Kreimler and Russell Pate and J Puder and J Reilly and Jo Salmon and Luis Sardinha and Anna Timperio and Ulf Ekelund",
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    Cooper, A, Goodman, A, Page, A, Sherar, L, Esliger, D, Van Sluijs, E, Andersen, L, Anderssen, S, Cardon, G, DAVEY, R, Froberg, K, Hallal, P, Janz, K, Kordas, K, Kreimler, S, Pate, R, Puder, J, Reilly, J, Salmon, J, Sardinha, L, Timperio, A & Ekelund, U 2015, 'Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD)', The 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; Goodman, Anna; Page, Angie; Sherar, Lauren; Esliger, D; Van Sluijs, Esther; Andersen, Lars; Anderssen, Sigmund; Cardon, G; DAVEY, Rachel; Froberg, Karsten; Hallal, Pedro; Janz, Kathleen; Kordas, Katarzyna; Kreimler, S; Pate, Russell; Puder, J; Reilly, J; Salmon, Jo; Sardinha, Luis; Timperio, Anna; Ekelund, Ulf.

    In: The International Journal of Behavioral Nutrition and Physical Activity, Vol. 12, No. 1, 113, 2015, p. 1-10.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD)

    AU - Cooper, Ashley

    AU - Goodman, Anna

    AU - Page, Angie

    AU - Sherar, Lauren

    AU - Esliger, D

    AU - Van Sluijs, Esther

    AU - Andersen, Lars

    AU - Anderssen, Sigmund

    AU - Cardon, G

    AU - DAVEY, Rachel

    AU - Froberg, Karsten

    AU - Hallal, Pedro

    AU - Janz, Kathleen

    AU - Kordas, Katarzyna

    AU - Kreimler, S

    AU - Pate, Russell

    AU - Puder, J

    AU - Reilly, J

    AU - Salmon, Jo

    AU - Sardinha, Luis

    AU - Timperio, Anna

    AU - Ekelund, Ulf

    PY - 2015

    Y1 - 2015

    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

    KW - Physical activity

    KW - Sedentary

    KW - Age Distribution

    KW - Body Weight

    KW - Humans

    KW - Child, Preschool

    KW - Male

    KW - Overweight

    KW - Time Factors

    KW - Female

    KW - Child

    KW - Databases, Factual

    KW - Obesity

    KW - Cross-Sectional Studies

    KW - Self Report

    KW - Accelerometry/statistics & numerical data

    KW - Motor Activity/physiology

    KW - Internationality

    KW - Adolescent

    KW - Sex Distribution

    KW - Family

    KW - Sedentary Behavior

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    UR - http://www.mendeley.com/research/objectively-measured-physical-activity-sedentary-time-youth-international-childrens-accelerometry-da

    U2 - 10.1186/s12966-015-0274-5

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