Adamo KB, Prince SA, Tricco AC, Connor-Gorber S, Tremblay M (2009) A comparison of indirect versus direct measures for assessing physical activity in the pediatric population: a systematic review. Int J Pediatr Obes 4(1):2–27
PubMed
Article
Google Scholar
Andersen LB, Sardinha LB, Froberg K, Riddoch CJ, Page AS, Anderssen SA (2008) Fitness, fatness and clustering of cardiovascular risk factors in children from Denmark, Estonia and Portugal: the European Youth Heart Study. Int J Pediatr Obes 3(Suppl 1):58–66
PubMed
Article
Google Scholar
Bailey DP, Boddy LM, Savory LA, Denton SJ, Kerr CJ (2012) Associations between cardiorespiratory fitness, physical activity and clustered cardiometabolic risk in children and adolescents: the HAPPY study. Eur J Pediatr 171(9):1317–1323
PubMed
Article
Google Scholar
Beighle A, Morgan CF, Le Masurier G, Pangrazi RP (2006) Children’s physical activity during recess and outside of school. J Sch Health 76(10):516–520
PubMed
Article
Google Scholar
Butte NF, Puyau MR, Adolph AL, Vohra FA, Zakeri I (2007) Physical activity in nonoverweight and overweight Hispanic children and adolescents. Med Sci Sports Exerc 39(8):1257–1266
PubMed
Article
Google Scholar
Centers for Disease Control and Prevention (1997) Guidelines for school and community programs to promote lifelong physical activity among young people. Morb Mort Wkly Rep 46(RR-6):1–36
Google Scholar
Chen LJ, Fox KR, Haase A, Wang JM (2006) Obesity, fitness and health in Taiwanese children and adolescents. Eur J Clin Nutr 60(12):1367–1375
PubMed
Article
CAS
Google Scholar
Child and Maternal Health Observatory (2009) Available at: http://atlas.chimat.org.uk/IAS/dataviews/view?viewId=11. Accessed 7 Jan 2012
Cohen J (1988) Statistical power analysis for the behavioral sciences, 2nd edn. Erlbaum, Hillsdale
Google Scholar
Danner FW (2008) A national longitudinal study of the association between hours of TV viewing and the trajectory of BMI growth among US children. J Pediatr Psychol 33(10):1100–1107
PubMed
Article
Google Scholar
Deforche B, De Bourdeaudhuij I, D’Hondt E, Cardon G (2009) Objectively measured physical activity, physical activity related personality and body mass index in 6- to 10-yr-old children: a cross-sectional study. Int J Behav Nutr Phys Act 6:25
PubMed
Article
Google Scholar
Department of Health. Health Survey for England (2008) Physical activity and fitness. http://www.ic.nhs.uk/webfiles/publications/HSE/HSE08/Volume_1_Physical_activity_and_fitness_revised.pdf. Accessed 18 April 2011
Department of Health (2011) Start Active, Stay Active: a report on physical activity for health from the four home countries’ Chief Medical Officers. http://www.dh.gov.uk/prod_consum_dh/groups/dh_digitalassets/documents/digitalasset/dh_128210.pdf. Accessed 7 July 2011
Ekelund U, Anderssen SA, Froberg K, Sardinha LB, Andersen LB, Brage S (2007) Independent associations of physical activity and cardiorespiratory fitness with metabolic risk factors in children: the European Youth Heart Study. Diabetologia 50(9):1832–1840
PubMed
Article
CAS
Google Scholar
Ekelund U, Tomkinson G, Armstrong N (2011) What proportion of youth are physically active? Measurement issues, levels and recent time trends. Br J Sports Med 45(11):859–865
PubMed
Article
Google Scholar
Eston RG, Rowlands AV, Ingledew DK (1998) Validity of heart rate, pedometry, and accelerometry for predicting the energy cost of children’s activities. J Appl Physiol 84(1):362–371
PubMed
CAS
Google Scholar
Fairclough S, Stratton G (2005) Physical education makes you fit and healthy. Physical education’s contribution to young people’s physical activity levels. Health Educ Res 20(1):14–23
PubMed
Article
CAS
Google Scholar
Fairclough SJ, Boddy LM, Hackett AF, Stratton G (2009) Associations between children’s socioeconomic status, weight status, and sex, with screen-based sedentary behaviours and sport participation. Int J Pediatr Obes 4(4):299–305
PubMed
Article
Google Scholar
Gidlow CJ, Cochrane T, Davey R, Smith H (2008) In-school and out-of-school physical activity in primary and secondary school children. J Sports Sci 26(13):1411–1419
PubMed
Article
Google Scholar
Gordon-Larsen P, McMurray RG, Popkin BM (1999) Adolescent physical activity and inactivity vary by ethnicity: The National Longitudinal Study of Adolescent Health. J Pediatr 135(3):301–306
PubMed
Article
CAS
Google Scholar
Gutin B, Yin Z, Humphries MC, Barbeau P (2005) Relations of moderate and vigorous physical activity to fitness and fatness in adolescents. Am J Clin Nutr 81(4):746–750
PubMed
CAS
Google Scholar
Harrington DM, Dowd KP, Bourke AK, Donnelly AE (2011) Cross-sectional analysis of levels and patterns of objectively measured sedentary time in adolescent females. Int J Behav Nutr Phys Act 8:120
PubMed
Article
Google Scholar
Hohepa M, Scragg R, Schofield G, Kolt GS, Schaaf D (2009) Self-reported physical activity levels during a segmented school day in a large multiethnic sample of high school students. J Sci Med Sport 12(2):284–292
PubMed
Article
Google Scholar
LeMura LM, Andreacci J, Carlonas R, Klebez JM, Chelland S (2000) Evaluation of physical activity measured via accelerometry in rural fourth-grade children. Percept Mot Skills 90(1):329–337
PubMed
Article
CAS
Google Scholar
Mattocks C, Ness A, Leary S, Tilling K, Blair SN, Shield J et al (2008) Use of accelerometers in a large field-based study of children: protocols, design issues, and effects on precision. J Phys Act Health 5(Suppl 1):S98–S111
PubMed
Google Scholar
MIMAS (2008) Welcome to GeoConvert. Available at: http://geoconvert.mimas.ac.uk/. Accessed 30 April 2011
Morrison JA, Friedman LA, Wang P, Glueck CJ (2008) Metabolic syndrome in childhood predicts adult metabolic syndrome and type 2 diabetes mellitus 25 to 30 years later. J Pediatr 152(2):201–206
PubMed
Article
CAS
Google Scholar
Nader PR (2003) Frequency and intensity of activity of third-grade children in physical education. Arch Pediatr Adolesc Med 157(2):185–190
PubMed
Google Scholar
Nettlefold L, McKay HA, Warburton DE, McGuire KA, Bredin SS, Naylor PJ (2011) The challenge of low physical activity during the school day: at recess, lunch and in physical education. Br J Sports Med 45(10):813–819
PubMed
Article
CAS
Google Scholar
Ogden CL, Carroll MD, Curtin LR, Lamb MM, Flegal KM (2010) Prevalence of high body mass index in US children and adolescents, 2007–2008. Jama 303(3):242–249
PubMed
Article
CAS
Google Scholar
Riddoch C, Edwards D, Page A, Froberg K, Anderssen SA, Wedderkopp N et al (2005) The European Youth Heart Study—cardiovascular disease risk factors in children: rationale, aims, study design, and validation of methods. J Phys Act Health 2(1):115–129
Google Scholar
Riddoch CJ, Bo Andersen L, Wedderkopp N, Harro M, Klasson-Heggebo L, Sardinha LB et al (2004) Physical activity levels and patterns of 9- and 15-yr-old European children. Med Sci Sports Exerc 36(1):86–92
PubMed
Article
Google Scholar
Ridgers ND, Fairclough SJ (2011) Assessing free-living physical activity using accelerometry: Practical issues for researchers and practitioners. Eur J Sport Sci 11(3):205–213
Article
Google Scholar
Ridgers ND, Graves LE, Foweather L, Stratton G (2010) Examining influences on boy’s and girls’ physical activity patterns: the A-CLASS project. Pediatr Exerc Sci 22(4):638–650
PubMed
Google Scholar
Ridgers ND, Stratton G, Fairclough SJ (2005) Assessing physical activity during recess using accelerometry. Prev Med 41(1):102–107
PubMed
Article
Google Scholar
Ridgers ND, Stratton G, Fairclough SJ, Twisk JW (2007) Children’s physical activity levels during school recess: a quasi-experimental intervention study. Int J Behav Nutr Phys Act 4:19
PubMed
Article
Google Scholar
Rowlands AV, Thomas PW, Eston RG, Topping R (2004) Validation of the RT3 triaxial accelerometer for the assessment of physical activity. Med Sci Sports Exerc 36(3):518–524
PubMed
Article
Google Scholar
Ruiz JR, Ortega FB, Rizzo NS, Villa I, Hurtig-Wennlof A, Oja L et al (2007) High cardiovascular fitness is associated with low metabolic risk score in children: the European Youth Heart Study. Pediatr Res 61(3):350–355
PubMed
Article
Google Scholar
Stamatakis E, Wardle J, Cole TJ (2010) Childhood obesity and overweight prevalence trends in England: evidence for growing socioeconomic disparities. Int J Obes (Lond) 34(1):41–47
Article
CAS
Google Scholar
Steele RM, van Sluijs EM, Cassidy A, Griffin SJ, Ekelund U (2009) Targeting sedentary time or moderate- and vigorous-intensity activity: independent relations with adiposity in a population-based sample of 10-y-old British children. Am J Clin Nutr 90(5):1185–1192
PubMed
Article
CAS
Google Scholar
Steele RM, van Sluijs EM, Sharp SJ, Landsbaugh JR, Ekelund U, Griffin SJ (2010) An investigation of patterns of children’s sedentary and vigorous physical activity throughout the week. Int J Behav Nutr Phys Act 7:88
PubMed
Article
Google Scholar
Stratton G (2000) Promoting children’s physical activity in primary school: an intervention study using playground markings. Ergonomics 43(10):1538–1546
PubMed
Article
CAS
Google Scholar
Thompson AM, Baxter-Jones AD, Mirwald RL, Bailey DA (2003) Comparison of physical activity in male and female children: does maturation matter? Med Sci Sports Exerc 35(10):1684–1690
PubMed
Article
Google Scholar
Tudor-Locke C, Lee SM, Morgan CF, Beighle A, Pangrazi RP (2006) Children’s pedometer-determined physical activity during the segmented school day. Med Sci Sports Exerc 38(10):1732–1738
PubMed
Article
Google Scholar
Twisk JW, Kemper HC, van Mechelen W (2002) The relationship between physical fitness and physical activity during adolescence and cardiovascular disease risk factors at adult age. The Amsterdam Growth and Health Longitudinal Study. Int J Sports Med 23(Suppl 1):S8–S14
PubMed
Article
Google Scholar
Wang Y, Lobstein T (2006) Worldwide trends in childhood overweight and obesity. Int J Pediatr Obes 1(1):11–25
PubMed
Article
Google Scholar