References
- Berkey CS, Rockett HR, Gillman MW, Colditz GA. 2003. One-year changes in activity and in inactivity among 10- to 15-year-old boys and girls: relationship to change in body mass index. Pediatrics 111:836–843
- Biddle SJ, O’Connell S, Braithwaite RE. 2011. Sedentary behaviour interventions in young people: a meta-analysis. Br J Sports Med 45:937–942
- Chan CB, Ryan DA, Tudor-Locke C. 2006. Relationship between objective measures of physical activity and weather: a longitudinal study. Int J Behav Nutr Phys Act 3:21
- Fisher A, Reilly JJ, Montgomery C, Kelly L, Williamson A, Jackson DM, Paton JY, Grant S. 2005. Seasonality in physical activity and sedentary behavior in young children. PES 17:31–40
- Freedson P, Pober D, Janz KF. 2005. Calibration of accelerometer output for children. Med Sci Sports Exerc 37:S523–530
- Irwin JD, He M, Sangster Bouck LM, Tucker P, Pollett GL. 2005. Preschoolers' physical activity behaviours: Parent's perspectives. Can J Public Health 96:299–303
- Kahn JA, Huang B, Gillman MW, Field AE, Austin SB, Colditz GA, Frazier AL. 2008. Patterns and determinants of physical activity in U.S. adolescents. J Adolesc Health 42:369–377
- Kwon S, Janz KF, Burns TL, Levy SM. 2011. Association between light-intensity physical activity and adiposity in childhood. Pediatr Exerc Sci 23:218–229
- Matthews CE, Chen KY, Freedson PS, Buchowski MS, Beech BM, Pate RR, Troiano RP. 2008. Amount of time spent in sedentary behaviors in the United States, 2003–2004. Am J Epidemiol 167:875–881
- Riddoch CJ, Mattocks C, Deere K, Saunders J, Kirkby J, Tilling K, Leary SD, et al. 2007. Objective measurement of levels and patterns of physical activity. Arch Dis Child 92:963–969
- Rowlands AV, Pilgrim EL, Eston RG. 2009. Seasonal changes in children's physical activity: an examination of group changes, intra-individual variability and consistency in activity pattern across season. Ann Hum Biol 36:363–378
- Shephard RJ, Aoyagi Y. 2009. Seasonal variations in physical activity and implications for human health. Eur J Appl Physiol 107:251–271
- Silva P, Esliger D, Welk G, Mota J. 2010. Technical Reliability Assessment of the Actigraph GT1M Accelerometers. Meas Phys Educ Exerc Sci 14:79–91
- Silva P, Santos R, Welk G, Mota J. 2011. Seasonal differences in physical activity and sedentary patterns: the relevance of the PA context. J Sports Sci Med 10:66–72
- Troiano RP. 2005. A timely meeting: objective measurement of physical activity. Med Sci Sports Exerc 37:S487–489
- Troiano RP, Berrigan D, Dodd KW, Masse LC, Tilert T, Mcdowell M. 2008. Physical activity in the United States measured by accelerometer. Med Sci Sports Exerc 40:181–188
- Trost SG, Pate RR, Freedson PS, Sallis JF, Taylor WC. 2000. Using objective physical activity measures with youth: how many days of monitoring are needed? Med Sci Sports Exerc 32:426–431
- Trost SG, Pate RR, Sallis JF, Freedson PS, Taylor WC, Dowda M, Sirard J. 2002. Age and gender differences in objectively measured physical activity in youth. Med Sci Sports Exerc 34:350–355
- Tucker P, Gilliland J. 2007. The effect of season and weather on physical activity: a systematic review. Public Health 121:909–922
- Tucker P, Irwin JD, Sangster Bouck LM, He M, Pollett G. 2006. Preventing paediatric obesity; recommendations from a community-based qualitative investigation. Obesity Reviews 7:251–260
- Uijtdewilligen L, Nauta J, Singh AS, Van Mechelen W, Twisk JW, Van Der Horst K, Chinapaw MJ. 2011. Determinants of physical activity and sedentary behaviour in young people: a review and quality synthesis of prospective studies. Br J Sports Med 45:896–905
- Van Der Horst K, Paw MJ, Twisk JW, Van Mechelen W. 2007. A brief review on correlates of physical activity and sedentariness in youth. Med Sci Sports Exerc 39:1241–1250