• Combined influence of epoch length, cut-point and bout duration on accelerometry-derived physical activity 

      Orme, Mark; Wijndaele, Katrien; Sharp, Stephen J.; Westgate, Kate; Ekelund, Ulf; Brage, Søren (Journal article; Peer reviewed, 2014-03-10)
      Background: It is difficult to compare accelerometer-derived estimates of moderate-to-vigorous physical activity (MVPA) between studies due to differences in data processing procedures. We aimed to evaluate the effects of ...
    • Cross-Sectional Associations of Objectively-Measured Physical Activity and Sedentary Time with Body Composition and Cardiorespiratory Fitness in Mid-Childhood: The PANIC Study 

      Collings, Paul J.; Westgate, Kate; Väistö, Juuso; Wijndaele, Katrien; Atkin, Andrew J.; Haapala, Eero A.; Lintu, Niina; Laitinen, Tomi; Ekelund, Ulf; Brage, Søren; Lakka, Timo A. (Journal article; Peer reviewed, 2016-08-24)
      Background: The minimum intensity of physical activity (PA) that is associated with favourable body composition and cardiorespiratory fitness (CRF) remains unknown. Objective: To investigate cross-sectional associations ...
    • Determinants of Change in Children's Sedentary Time 

      Atkin, Andrew J.; Corder, Kirsten; Ekelund, Ulf; Wijndaele, Katrien; Griffin, Simon J.; van Sluijs, Esther M. F. (Journal article; Peer reviewed, 2013-06-28)
      Background: Understanding the determinants of sedentary time during childhood contributes to the development of effective intervention programmes. Purpose: To examine family and home-environmental determinants of 1-year ...
    • Increasing objectively measured sedentary time increases clustered cardiometabolic risk: a 6 year analysis of the ProActive study 

      Wijndaele, Katrien; Orrow, Gillian; Ekelund, Ulf; Sharp, Stephen J.; Brage, Søren; Griffin, Simon J.; Simmons, Rebecca K. (Journal article; Peer reviewed, 2013-11-06)
      Aims/hypothesis: We aimed to quantify the associations between change in objectively measured sedentary and moderate-to-vigorous physical activity (MVPA) times and self-reported television viewing over 6 years and change ...
    • Joint associations of accelerometer-measured physical activity and sedentary time with all-cause mortality: A harmonised meta-analysis in more than 44 000 middle-aged and older individuals 

      Ekelund, Ulf; Tarp, Jakob; Fagerland, Morten Wang; Steene-Johannessen, Jostein; Hansen, Bjørge Herman; Jefferis, Barbara; Whincup, Peter H.; Diaz, Keith M.; Hooker, Steven; Howard, Virginia J.; Chernofsky, Ariel; Larson, Martin G.; Spartano, Nicole; Vasan, Ramachandran S.; Dohrn, Ing-Mari; Hagströmer, Maria; Edwardson, Charlotte; Yates, Thomas; Shiroma, Eric; Dempsey, Paddy; Wijndaele, Katrien; Anderssen, Sigmund Alfred; Lee, I-Min (Peer reviewed; Journal article, 2020)
      Objectives: To examine the joint associations of accelerometer-measured physical activity and sedentary time with all-cause mortality. Methods: We conducted a harmonised meta-analysis including nine prospective cohort ...
    • Levels and patterns of objectively-measured physical activity volume and intensity distribution in UK adolescents: the ROOTS study 

      Collings, Paul J.; Wijndaele, Katrien; Corder, Kirsten; Westgate, Kate; Ridgway, Charlotte L.; Dunn, Valerie; Goodyer, Ian; Ekelund, Ulf; Brage, Søren (Journal article; Peer reviewed, 2014-02-24)
      Background: Few studies have quantified levels of habitual physical activity across the entire intensity range. We aimed to describe variability in total and intensity-specific physical activity levels in UK adolescents ...
    • Magnitude and determinants of change in objectively-measured physical activity, sedentary time and sleep duration from ages 15 to 17.5y in UK adolescents: the ROOTS study. 

      Collings, Paul J.; Wijndaele, Katrien; Corder, Kirsten; Westgate, Kate; Ridgway, Charlotte L.; Sharp, Stephen J.; Dunn, Valerie; Goodyer, Ian; Ekelund, Ulf; Brage, Søren (Journal article; Peer reviewed, 2015-05-14)
      Background: Self-reported physical activity (PA) and sleep duration (SLP) change markedly throughout adolescence. We sought to quantify changes in objectively-measured PA, sedentary time (ST) and SLP through adolescence, ...
    • Objectively measured physical activity and longitudinal changes in adolescent body fatness: an observational cohort study 

      Collings, Paul J.; Wijndaele, Katrien; Corder, Kirsten; Westgate, Kate; Ridgway, Charlotte L.; Sharp, Stephen J.; Atkin, Andrew J.; Stephen, Alison M.; Bamber, Diane; Goodyer, Ian; Brage, Søren; Ekelund, Ulf (Journal article; Peer reviewed, 2015-04-27)
      Background: The data regarding prospective associations between physical activity (PA) and adiposity in youth are inconsistent. Objective: The objective of this study was to investigate associations between ...
    • Physical activity intensity, bout-duration, and cardiometabolic risk markers in children and adolescents 

      Tarp, Jakob; Child, Abbey; White, Tom; Westgate, Kate; Bugge, Anna; Grøntved, Anders; Wedderkopp, Niels; Andersen, Lars Bo; Cardon, Greet; Davey, Rachel; Janz, Kathleen F; Kriemler, Susi; Northstone, Kate; Page, Angie S.; Puder, Jardena J; Reilly, John J; Sardinha, Luis B; van Sluijs, Esther M F; Ekelund, Ulf; Wijndaele, Katrien; Brage, Søren (Journal article; Peer reviewed, 2018)
      Objectives: To determine the role of physical activity intensity and bout-duration in modulating associations between physical activity and cardiometabolic risk markers. Methods: A cross-sectional study using the International ...
    • Physical activity, sedentary time and gain in overall and central body fat: 7-year follow-up of the ProActive trial cohort 

      Golubic, Rajna; Wijndaele, Katrien; Sharp, Stephen J.; Griffin, Simon J.; Wareham, Nicholas J.; Ekelund, Ulf; Brage, Søren (Journal article; Peer reviewed, 2014-05-20)
      Objective: The objective of this study is to examine the independent associations of time spent in moderate-to-vigorous physical activity (MVPA) and sedentary (SED-time), with total and abdominal body fat (BF), and the ...
    • Prospective associations between sedentary time, sleep duration and adiposity in adolescents. 

      Collings, Paul J.; Wijndaele, Katrien; Corder, Kirsten; Westgate, Kate; Ridgway, Charlotte L.; Sharp, Stephen J.; Atkin, Andrew J.; Bamber, Diane; Goodyer, Ian; Brage, Søren; Ekelund, Ulf (Journal article; Peer reviewed, 2015-06)
      Objective: The objective of this study was to investigate whether objectively measured sedentary time and sleep duration are associated with changes in adiposity from mid- to late adolescence. Methods: Students ...
    • Sedentary behavior and incident cancer: a meta-analysis of prospective studies 

      Shen, Dong; Mao, Weidong; Liu, Tao; Lin, Quingfeng; Lu, Xiangdong; Wang, Qiong; Lin, Feng; Ekelund, Ulf; Wijndaele, Katrien (Journal article; Peer reviewed, 2014-08-25)
      Sedentary behavior is ubiquitous in modern adults' daily lives and it has been suggested to be associated with incident cancer. However, the results have been inconsistent. In this study, we performed a systematic review ...
    • Sedentary time and physical activity surveillance through accelerometer pooling in four european countries 

      Loyen, Anne; Clarke-Cornwell, Alexandra M.; Anderssen, Sigmund A.; Hagströmer, Maria; Sardinha, Luis B.; Sundquist, Kristina; Ekelund, Ulf; Steene-Johannessen, Jostein; Baptista, Fatima; Hansen, Bjørge Herman; Wijndaele, Katrien; Brage, Søren; Lakerveld, Jeroen; Brug, Johannes; van der Ploeg, Hidde P. (Journal article; Peer reviewed, 2016-12-10)
      OBJECTIVE: The objective of this study was to pool, harmonise and re-analyse national accelerometer data from adults in four European countries in order to describe population levels of sedentary time and physical inactivity. ...
    • 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 ...
    • Utilization and harmonization of adult accelerometry data: review and expert consensus. 

      Wijndaele, Katrien; Westgate, Kate; Stephens, Samantha K.; Blair, Steven N.; Bull, Fiona C.; Chastin, Sebastien F. M.; Dunstan, David W.; Ekelund, Ulf; Esliger, Dale W.; Freedson, Patty S.; Granat, Malcolm H.; Matthews, Charles E.; Owen, Neville; Rowlands, Alex V.; Sherar, Lauren B.; Tremblay, Mark S.; Troiano, Richard P.; Brage, Søren; Healy, Genevieve N. (Journal article; Peer reviewed, 2015-10)
      Purpose: This study aimed to describe the scope of accelerometry data collected internationally in adults and to obtain a consensus from measurement experts regarding the optimal strategies to harmonize international ...