Adolescent physical activity and health: a systematic review, Sports Med, vol.36, pp.1019-1049, 2006. ,
Evidence for prescribing exercise as therapy in chronic disease, Scand J Med Sci Sports, vol.16, pp.3-63, 2006. ,
Measurement issues in the assessment of physical activity in children, Res Q Exerc Sport, vol.71, pp.59-73, 2000. ,
Technical aspects and relevance of physical activity assessment in children and adolescents in free-living conditions, Arch Pediatr, vol.19, pp.1219-1244, 2012. ,
Hawthorne effect"-what did the original Hawthorne studies actually show?, Scand J Work Environ Health, vol.26, pp.363-370, 2000. ,
Reactivity to accelerometer measurement of children and adolescents, Med Sci Sports Exerc, vol.46, pp.1140-1146, 2014. ,
New horizons in sensor development, Med Sci Sports Exerc, vol.44, pp.24-31, 2012. ,
Examination of accelerometer reactivity among a population sample of children, adolescents, and adults, J Phys Act Health, vol.24, pp.1-27, 2016. ,
Does reactivity exist in children when measuring activity levels with unsealed pedometers?, Pediatr Exerc Sci, vol.16, pp.158-66, 2004. ,
Measuring physical activity in children with pedometers: reliability, reactivity, and replacement of missing data, Pediatr Exerc Sci, vol.16, pp.343-54, 2004. ,
Does reactivity exist in children when measuring activity levels with pedometers?, Pediatr Exerc Sci, vol.14, pp.56-63, 2002. ,
Do children take the same number of steps every day?, Am J Hum Biol, vol.19, pp.537-580, 2007. ,
Motion sensor reactivity in physically active young adults, Res Q Exerc Sport, vol.78, pp.1-8, 2007. ,
The use of accelerometry in adolescents and its implementation with non-wear time activity diaries in free-living conditions, J Sports Sci, vol.29, pp.103-116, 2011. ,
Development of a compendium of energy expenditures for youth, Int J Behav Nutr Phys Act, vol.10, p.45, 2008. ,
Objectively measured physical activity and sedentary time in European adolescents: the HELENA study, Am J Epidemiol, vol.174, pp.173-84, 2011. ,
Using objective physical activity measures with youth: how many days of monitoring are needed?, Med Sci Sports Exerc, vol.32, pp.426-457, 2000. ,
Quality control methods in accelerometer data processing: defining minimum wear time, PLoS One, vol.8, p.67206, 2013. ,
Technical variability of the GT3X accelerometer, Med Eng Phys, vol.34, pp.787-90, 2012. ,
Calibration of ActiGraph GT3X, Actical and RT3 accelerometers in adolescents, Eur J Sport Sci, vol.14, pp.91-100, 2014. ,
Intermonitor variability of GT3X accelerometer, Int J Sports Med, vol.33, pp.994-1003, 2012. ,
Preliminary evidence of physical activity levels measured by accelerometer in Spanish adolescents: the AFINOS study, Nutr Hosp, vol.24, pp.226-258, 2009. ,
Statistical power analysis for the Behavioral sciences, p.455, 1988. ,
Presence and duration of reactivity to pedometers in adults, Med Sci Sports Exerc, vol.44, pp.1097-101, 2012. ,
Reactivity: an issue for short-term pedometer studies?, Br J Sports Med, vol.42, pp.68-70, 2008. ,
Increasing our understanding of reactivity to pedometers in adults, Med Sci Sports Exerc, vol.41, pp.674-80, 2009. ,
Physical activity awareness of British adolescents, Arch Pediatr Adolesc Med, vol.165, pp.603-612, 2011. ,
Perception versus reality awareness of physical activity levels of British children, Am J Prev Med, vol.38, pp.1-8, 2010. ,
Family circumstance, sedentary behaviour and physical activity in adolescents living in England: project STIL, Int J Behav Nutr Phys Act, vol.11, p.33, 2009. ,
Schools and obesity prevention: creating school environments and policies to promote healthy eating and physical activity, The Milbank Quarterly, vol.87, pp.71-100, 2009. ,
Is knowing enough? Increasing physical activity by wearing a pedometer, WMJ, vol.102, pp.31-37, 2003. ,