• A closer look at the relationship among accelerometer-based physical activity metrics: ICAD pooled data 

      Kwon, Soyang; Andersen, Lars Bo; Grøntved, Anders; Kolle, Elin; Cardon, Greet; Davey, Rachel; Kriemler, Susi; Northstone, Kate; Page, Angie S.; Puder, Jardena J.; Reilly, John J.; Sardinha, Luís B.; van Sluijs, Esther M.F.; Janz, Kathleen F. (Peer reviewed; Journal article, 2019)
      Background: Accelerometers are widely used to assess child physical activity (PA) levels. Using the accelerometer data, several PA metrics can be estimated. Knowledge about the relationships between these different metrics ...
    • Cross-Sectional Associations of Reallocating Time Between Sedentary and Active Behaviours on Cardiometabolic Risk Factors in Young People : An International Children’s Accelerometry Database (ICAD) Analysis 

      Hansen, Bjørge Herman; Anderssen, Sigmund Alfred; Andersen, Lars Bo; Hildebrand, Maria; Kolle, Elin; Steene-Johannessen, Jostein; Kriemler, Susi; Page, Angie S.; Puder, Jardena J.; Reilly, John J.; Sardinha, Luis B.; van Sluijs, Esther M.F.; Wedderkopp, Niels; Ekelund, Ulf (Peer reviewed; Journal article, 2018)
      Introduction Sedentary time and time spent in various intensity-specific physical activity are co-dependent, and increasing time spent in one behaviour requires decreased time in another. Objective The aim of the present ...
    • Framework of outcome measures recommended for use in the evaluation of childhood obesity treatment interventions: the CoOR framework 

      Bryant, M.; Ashton, L.; Nixon, J.; Jebb, S.; Wright, J.; Roberts, K.; Brown, J.; Cooper, Ashley R.; Cummings, Steven; Ekelund, Ulf; Gorecki, Claudia; Griffiths, Lucy; Hamilton-Shield, Julian; Hill, Andrew; Kind, Paul; Reilly, John J.; Summerbell, Carolyn (Journal article; Peer reviewed, 2014-04-14)
      Consensus is lacking in determining appropriate outcome measures for assessment of childhood obesity treatments. Inconsistency in the use and reporting of such measures impedes comparisons between treatments and limits ...
    • 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 A.; Cardon, Greet; Davey, Rachel; Froberg, Karsten; Hallal, Pedro; Janz, Kathleen F.; Kordas, Katarzyna; Kreimler, Susi; Pate, Russell; Puder, Jardena; Reilly, John J.; Salmon, Jo; Sardinha, Luis B.; Timperio, Anna M.; Ekelund, Ulf (Journal article; Peer reviewed, 2015-09-17)
      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 ...
    • Practical utility and reliability of whole-room calorimetry in young children 

      Janssen, Xanne; Cliff, Dylan; Okely, Anthony D.; Jones, Rachel A.; Batterham, Marijka; Ekelund, Ulf; Brage, Søren; Reilly, John J. (Journal article; Peer reviewed, 2012-09-19)
      The use of whole-room calorimetry (WRC) in young children can increase our understanding of children's energy balance. However, studies using WRC in young children are rare due to concerns about its feasibility. To assess ...
    • Predictive validity and classification accuracy of actigraph energy expenditure equations and cut-points in young children 

      Janssen, Xanne; Cliff, Dylan; Reilly, John J.; Hinkley, Trina; Jones, Rachel A.; Batterham, Marijka; Ekelund, Ulf; Brage, Søren; Okely, Anthony D. (Journal article; Peer reviewed, 2013-11-11)
      Objectives: Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers. Methods: Forty children aged 4–6 years ...
    • Predictive validity of a thigh-worn accelerometer METs algorithm in 5- to 12-year-old children 

      van Loo, Christiana M. T.; Okely, Anthony D.; Batterham, Marijka; Hinkley, Tina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Peoples, Gregory E.; Jones, Rachel; Janssen, Xanne; Cliff, Dylan P. (Journal article; Peer reviewed, 2016-06)
      Background: To validate the activPAL3 algorithm for predicting metabolic equivalents (TAMETs) and classifying MVPA in 5- to 12-year-old children. Methods: Fifty-seven children (9.2 ± 2.3y, 49.1% boys) completed 14 activities ...
    • Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children’s Accelerometry database (ICAD) 

      Wijndaele, Katrien; White, Thomas; Andersen, Lars Bo; Bugge, Anna; Kolle, Elin; Northstone, Kate; Wedderkopp, Niels; Ried-Larsen, Mathias; Kriemler, Susi; Page, Angie S.; Puder, Jardena J.; Reilly, John J.; Sardinha, Luis B.; van Sluijs, Esther M.F.; Sharp, Stephen J.; Brage, Søren; Ekelund, Ulf (Peer reviewed; Journal article, 2019)
      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 cardiometabolic ...
    • Validation of the SenseWear Mini activity monitor in 5−12-year-old children 

      van Loo, Christiana M. T.; Okely, Anthony D.; Batterham, Marijka; Hinkley, Trina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Peoples, Gregory E.; Jones, Rachel A.; Janssen, Xanne; Cliff, Dylan P. (Journal article; Peer reviewed, 2017)
      Objectives: This study aimed to validate SenseWear Mini software algorithm versions 2.2 (SW2.2) and 5.2 (SW5.2) for estimating energy expenditure (EE) in children. Design: Laboratory-based validation study. Methods: 57 ...
    • Validation of thigh-based accelerometer estimates of postural allocation in 5–12 year-olds 

      van Loo, Christiana M. T.; Okely, Anthony D.; Batterham, Marijka J.; Hinkley, Trina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Jones, Rachel A.; Janssen, Xanne; Cliff, Dylan P. (Journal article; Peer reviewed, 2017-03)
      Objectives: To validate activPAL3™ (AP3) for classifying postural allocation, estimating time spent in postures and examining the number of breaks in sedentary behaviour (SB) in 5–12 year-olds. Design: Laboratory-based ...
    • Variations in accelerometry measured physical activity and sedentary time across Europe: Harmonized analyses of 47,497 children and adolescents 

      Steene-Johannessen, Jostein; Hansen, Bjørge Herman; Dalene, Knut Eirik; Kolle, Elin; Northstone, Kate; Møller, Niels Christian; Grøntved, Anders; Wedderkopp, Niels; Kriemler, Susi; Page, Angie S.; Puder, Jardena J.; Reilly, John J.; Sardinha, Luís B.; van Sluijs, Esther M.F.; Andersen, Lars Bo; van der Ploeg, Hidde P.; Ahrens, Wolfgang; Flexeder, Claudia; Standl, Marie; Shculz, Holger; Moreno, Luis A.; De Henauw, Stefaan; Michels, Nathalie; Cardon, Greet; Ortega, Francisco B.; Ruiz, Jonatan; Aznar, Susana; Fogelholm, Mikael; Decelis, Andrew; Olesen, Line Grønholt; Hjorth, Mads F.; Santos, Rute; Vale, Susana; Christiansen, Lars Breum; Jago, Russell; Basterfield, Laura; Owen, Christopher G.; Nightingale, Claire M.; Eiben, Gabriele; Polito, Angela; Lauria, Fabio; Vanhelst, Jeremy; Hadjigeorgiou, Charalambos; Konstabel, Kenn; Molnár, Dénes; Sprengeler, Ole; Manios, Yannis; Harro, Jaanus; Kafatos, Anthony; Anderssen, Sigmund Alfred; Ekelund, Ulf (Peer reviewed; Journal article, 2020)
      Background: Levels of physical activity and variation in physical activity and sedentary time by place and person in European children and adolescents are largely unknown. The objective of the study was to assess the ...
    • Wrist Acceleration Cut-points for Moderate-to-Vigorous Physical Activity in Youth 

      van Loo, Christiana M. T.; Okely, Anthony D.; Batterham, Marijka; Hinkley, Trina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Trost, Stewart G.; Jones, Rachel A.; Janssen, Xanne; Cliff, Dylan P. (Journal article; Peer reviewed, 2017)
      Purpose: To examine the validity of wrist acceleration cut-points for classifying moderate (MPA), vigorous (VPA) and moderate-to-vigorous (MVPA) physical activity. Methods: Fifty-seven children (5-12y) completed 15 ...
    • Wrist Accelerometer Cut Points for Classifying Sedentary Behavior in Children 

      van Loo, Christiana M. T.; Okely, Anthony D.; Batterham, Marijka J.; Hinkley, Trina; Ekelund, Ulf; Brage, Søren; Reilly, John J.; Trost, Stewart G.; Jones, Rachel A.; Janssen, Xanne; Cliff, Dylan P. (Journal article; Peer reviewed, 2017)
      Introduction: To examine the validity and accuracy of wrist accelerometers for classifying sedentary behavior (SB) in children. Methods: Fifty-seven children (5-8y and 9-12y) completed a ~170min protocol including 15 ...