• Children's moderate-to-vigorous physical activity on weekdays versus weekend days: A multi-country analysis 

      Brazendale, Keith; Beets, Michael W.; Armstrong, Bridget; Weaver, R. Glenn; Hunt, Ethan T.; Pate, Russell R.; Brusseau, Timothy A.; Bohnert, Amy M.; Olds, Timothy; Tassitano, Rafael M.; Tenorio, Maria Cecilia M.; Garcia, Jeanette; Andersen, Lars Bo; Davey, Rachel; Hallal, Pedro C.; Jago, Russell; Kolle, Elin; Kriemler, Susi; Kristensen, Peter L.; Kwon, Soyang; Puder, Jardena J.; Salmon, Jo; Sardinha, Luís B.; van Sluijs, Esther M. F. (Peer reviewed; Journal article, 2021)
      Purpose: The Structured Days Hypothesis (SDH) posits that children’s behaviors associated with obesity – such as physical activity – are more favorable on days that contain more ‘structure’ (i.e., a pre-planned, segmented, ...
    • 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 ...
    • Joint associations of physical activity and sedentary time with adiposity during adolescence: ALSPAC 

      Kwon, Soyang; Ekelund, Ulf; Kandula, Namratha R.; Janz, Kathleen F. (Peer reviewed; Journal article, 2022)
      Background: In developing evidence-based physical activity (PA) guidelines for youth, a knowledge gap exists regarding the health effects of sedentary time (SED). The aim of this study was to determine the joint associations ...
    • Longitudinal change in physical activity and adiposity in the transition from adolescence to early adulthood: The 1993 Pelotas cohort study 

      Kwon, Soyang; Menezes, Ana M. B.; Ekelund, Ulf; Wehrmeister, Fernando C.; Gonçalves, Helen; da Silva, Bruna Gonçalves C.; Janz, Kathleen F. (Peer reviewed; Journal article, 2022)
      Background: In the current Physical Activity Guidelines (PAG) for moderate- and vigorous-intensity physical activity (MVPA), abrupt transition from ≥ 60 min/day [youth PAG] to ≥ 150 min/week (≥ 22 min/day on average) [adult ...
    • Tracking of accelerometry-measured physical activity during childhood: ICAD pooled analysis 

      Kwon, Soyang; Janz, Kathleen F.; Cooper, Ashley R.; Ekelund, Ulf; Esliger, Dale W.; Griew, Pippa; Judge, Ken; Ness, Andy; Riddoch, Chris J.; Salmon, Jo; Sherar, Lauren (Journal article; Peer reviewed, 2012-06-07)
      Background Understanding of physical activity (PA) tracking during childhood is important to predict PA behaviors and design appropriate interventions. We compared tracking of PA according to PA level and type of day ...