Systematic review of the relationships between objectively measured physical activity and health indicators in school-aged children and youth

Applied Physiology, Nutrition and Metabolism

Volumn 41, Issue 6, 2016, Pages S197-S239

  Poitras, Veronica Joan ^a   Gray, Casey Ellen ^a   Borghese, Michael M ^b   Carson, Valerie ^c   Chaput, Jean Philippe ^a   Janssen, Ian ^b   Katzmarzyk, Peter T ^d   Pate, Russell R ^e   Connor Gorber, Sarah ^f,h   Kho, Michelle E ^g   Sampson, Margaret ^a   Tremblay, Mark S ^a  

^a CHILDREN S HOSPITAL OF EASTERN ONTARIO   (Canada)

^b QUEEN S UNIVERSITY   (Canada)

^c UNIVERSITY OF ALBERTA   (Canada)

^d PENNINGTON BIOMEDICAL RESEARCH CENTER   (United States)

^e UNIVERSITY OF SOUTH CAROLINA   (United States)

^f PUBLIC HEALTH AGENCY OF CANADA   (Canada)

^g MCMASTER UNIVERSITY   (Canada)

^h CANADIAN INSTITUTES OF HEALTH RESEARCH   (Canada)

Author keywords

Academic achievement; Behavioural conduct; Body composition; Bone health; Cardiometabolic biomarkers; Children; Fitness; Physical activity; Quality of life; Well being

Indexed keywords

BIOLOGICAL MARKER;

ADOLESCENT; ADOLESCENT BEHAVIOR; BLOOD; BODY COMPOSITION; CARDIOVASCULAR DISEASES; CHILD; CHILD BEHAVIOR; COGNITION; CONTROLLED CLINICAL TRIAL (TOPIC); EXERCISE; FITNESS; HEALTH STATUS; HUMAN; METABOLIC SYNDROME X; OBESITY; PRESCHOOL CHILD; QUALITY OF LIFE; RANDOMIZED CONTROLLED TRIAL (TOPIC); TREATMENT OUTCOME;

ADOLESCENT; ADOLESCENT BEHAVIOR; BIOMARKERS; BODY COMPOSITION; CARDIOVASCULAR DISEASES; CHILD; CHILD BEHAVIOR; CHILD, PRESCHOOL; COGNITION; EXERCISE; HEALTH STATUS; HUMANS; METABOLIC SYNDROME X; NON-RANDOMIZED CONTROLLED TRIALS AS TOPIC; OBESITY; PHYSICAL FITNESS; QUALITY OF LIFE; RANDOMIZED CONTROLLED TRIALS AS TOPIC; TREATMENT OUTCOME;

EID: 84982902902     PISSN: 17155312     EISSN: 17155320     Source Type: Journal    
DOI: 10.1139/apnm-2015-0663     Document Type: Review

References (198)

1. Adamo, K.B., Prince, S.A., Tricco, A.C., Connor-Gorber, S., and Tremblay, M. 2009 A comparison of indirect versus direct measures for assessing physical activity in the pediatric population: a systematic review. Int. J. Ped. Obes. 4(1): 2-27. doi:10.1080/17477160802315010 PMID:18720173
2. Aggio, D., Smith, L., and Hamer, M. 2015 Effects of reallocating time in different activity intensities on health and fitness: a cross sectional study. Int. J. Behav. Nutr. Phys. Activ. 12(83). PMID:26104041
3. Andersen, L.B., Anderssen, S.A., Brage, S., Ekelund, U., and Froberg, K. 2006 Physical activity and clustering of CVD risk factors-secondary publication. [Reprint of Lancet. 2006 Jul 22;368(9532):299-304; PMID:16860699] Ugeskr. Laeg. 168(47): 4101-4103. [In Danish.] PMID:17134609
4. Balk, E.M., Chung, M., Hadar, N., Patel, K., Yu, W.W., Trikalinos, T.A., and Chang, L.K.W. (Editors). 2012 Accuracy of data extraction of non-English language trials with Google Translate. Rockville, Md., USA.
5. Barreira, T.V., Katzmarzyk, P.T., Johnson, W.D., and Tudor-Locke, C. 2013 Walking cadence and cardiovascular risk in children and adolescents: NHANES, 2005-2006 Am. J. Prevent. Med. 45(6): e27-e34. doi:10.1016/j.amepre.2013.08.005
6. PMID:24237926
7. Basterfield, L., Pearce, M.S., Adamson, A.J., Frary, J.K., Parkinson, K.N., Wright, C.M., et al. 2012 Physical activity, sedentary behavior, and adiposity in English children. Am. J. Prevent. Med. 42(5): 445-451. doi:10.1016/j.amepre.2012.01.007 PMID:22516483
8. Belcher, B.R., Berrigan, D., Dodd, K.W., Emken, B.A., Chih-Ping, C., and Spruijt-Metz, D. 2010 Physical activity in US youth: effect of race/ethnicity, age, gender, and weight status. Med. Sci. Sports Exerc. 42(12): 2211-2221. doi:10.1249/MSS.0b013e3181e1fba9 PMID:21084930
9. Booth, J.N., Tomporowski, P.D., Boyle, J.M., Ness, A.R., Joinson, C., Leary, S.D., and Reilly, J.J. 2013 Associations between executive attention and objectively measured physical activity in adolescence: Findings from ALSPAC, a UK cohort. Mental Health Phys. Activ. 6(3): 212-219. doi:10.1016/j.mhpa.2013.09.002
10. Booth, J.N., Leary, S.D., Joinson, C., Ness, A.R., Tomporowski, P.D., Boyle, J.M., and Reilly, J.J. 2014 Associations between objectively measured physical activity and academic attainment in adolescents from a UK cohort. Br. J. Sports Med. 48(3): 265-270. doi:10.1136/bjsports-2013-092334 PMID:24149097
11. Brage, S., Wedderkopp, N., Ekelund, U., Franks, P.W., Wareham, N.J., Andersen, L.B., and Froberg, K. 2004a. Objectively measured physical activity correlates with indices of insulin resistance in Danish children. The European Youth Heart Study (EYHS). Int. J. Obes. Rel. Metab. Dis. 28(11): 1503-1508 PMID:15326467
12. Brage, S., Wedderkopp, N., Ekelund, U., Franks, P.W., Wareham, N.J., Andersen, L.B., and Froberg, K. 2004b. Features of the metabolic syndrome are associated with objectively measured physical activity and fitness in Danish children: the European Youth Heart Study (EYHS). Diabetes Care, 27(9): 2141-2148. doi:10.2337/diacare.27.9.2141 PMID:15333475
13. Butte, N.F., Cai, G., Cole, S.A., Wilson, T.A., Fisher, J.O., Zakeri, I.F., et al. 2007a. Metabolic and behavioral predictors of weight gain in Hispanic children: The Viva la Familia Study. Am. J. Clin. Nutr. 85(6): 1478-1485 PMID:17556682
14. Butte, N.F., Puyau, M.R., Adolph, A.L., Vohra, F.A., and Zakeri, I. 2007b. Physical activity in nonoverweight and overweight Hispanic children and adolescents. Med. Sci. Sports Exerc. 39(8): 1257-1266. doi:10.1249/mss.0b013e3180621fb6 PMID:17762358
15. Cardadeiro, G., Baptista, F., Ornelas, R., Janz, K.F., and Sardinha, L.B. 2012 Sex specific association of physical activity on proximal femur BMD in 9 to 10 year-old children. PLoS ONE, 7(11): e50657. doi:10.1371/journal.pone.0050657 PMID:23209801
16. Carson, V., and Janssen, I. 2011 Volume, patterns, and types of sedentary behavior and cardio-metabolic health in children and adolescents: a cross-sectional study. BMC Publ. Health, 11(274). doi:10.1186/1471-2458-11-274 PMID:21542910
17. Carson, V., Ridgers, N.D., Howard, B.J., Winkler, E.A., Healy, G.N., Owen, N., et al. 2013 Light-intensity physical activity and cardiometabolic biomarkers in US adolescents. PLoS ONE, 8(8): e71417. doi:10.1371/journal.pone.0071417 PMID: 23951157
18. Carson, V., Rinaldi, R.L., Torrance, B., Maximova, K., Ball, G.D., Majumdar, S.R., et al. 2014 Vigorous physical activity and longitudinal associations with cardiometabolic risk factors in youth. Int. J. Obes. 38(1): 16-21. doi:10.1038/ijo.2013.135 PMID:23887061
19. Chaput, J.P., Saunders, T.J., Mathieu, M., Henderson, M., Tremblay, M.S., O’Loughlin, J., et al. 2013 Combined associations between moderate to vigorous physical activity and sedentary behaviour with cardiometabolic risk factors in children. Appl. Physiol. Nutr. Metab. 38(5): 477-483. doi:10.1139/apnm-2012-0382
20. Chaput, J.P., Carson, V., Gray, C.E., and Tremblay, M.S. 2014 Importance of all movement behaviors in a 24 hour period for overall health. Int. J. Environ. Res. Publ. Health, 11(12): 12575-12581. doi:10.3390/ijerph111212575
21. PMID: 25485978
22. Chastin, S.F.M., Palarea-Albaladejo, J., Dontje, M.L., and Skelton, D.A. 2015 Combined effects of time spent in physical activity, sedentary behaviors and sleep on obesity and cardio-metabolic health markers: a novel compositional data analysis approach. PLoS ONE, 10(10): e0139984. doi:10.1371/journal.pone.0139984 PMID:26461112
23. Chung, A.E., Skinner, A.C., Steiner, M.J., and Perrin, E.M. 2012 Physical activity and BMI in a nationally representative sample of children and adolescents. Clin. Pediatr. 51(2): 122-129. doi:10.1177/0009922811417291 PMID:22315503
24. Colley, R.C., Garriguet, D., Janssen, I., Craig, C.L., Clarke, J., and Tremblay, M.S. 2011 Physical activity of Canadian children and youth: Accelerometer results from the 2007 to 2009 Canadian Health Measures Survey. Statistics Canada cat. no. 82-003-X. Health Rep. 22(1): 1523 PMID:21510586
25. Colley, R.C., Wong, S.L., Garriguet, D., Janssen, I., Connor, G.S., and Tremblay, M.S. 2012 Physical activity, sedentary behaviour and sleep in Canadian children: parent-report versus direct measures and relative associations with health risk. Health Rep. 23(2): 45-52 PMID:22866540.
26. da Silva, I., van Hees, V., Ramires, V.V., Knuth, A.G., Bielemann, R.M., Ekelund, U., et al. 2014 Physical activity levels in three Brazilian birth cohorts as assessed with raw triaxial wrist accelerometry. Int. J. Epidemiol. 43(6): 1959-1968. doi:10.1093/ije/dyu203 PMID:25361583.
27. de Moraes, A.C., Carvalho, H.B., Siani, A., Gianvincenzo, B., Veidebaum, T., Tornaritis, M., et al. 2015 Incidence of high blood pressure in children - Effects of physical activity and sedentary behaviors: The IDEFICS study: high blood pressure, lifestyle and children. Int. J. Cardiol. 180: 165-170. doi:10.1016/j.ijcard.2014.11.175 PMID:25460372
28. Deere, K., Sayers, A., Rittweger, J., and Tobias, J.H. 2012 Habitual levels of high, but not moderate or low, impact activity are positively related to hip BMD and geometry: Results from a population-based study of adolescents. J. Bone Min. Res. 27(9): 1887-1895. doi:10.1002/jbmr.1631 PMID:22492557
29. Dencker, M., Bugge, A., Hermansen, B., and Andersen, L.B. 2010 Objectively measured daily physical activity related to aerobic fitness in young children. J. Sports Sci. 28(2): 139-145. doi:10.1080/02640410903460726 PMID:20035491
30. Dimitriou, M., Michalopoulou, M., Gourgoulis, V., and Aggelousis, N. 2011 Participation in community-based sport skills learning programmes, physical activity recommendations and health-related fitness for children in Greece. Sport Sci. Health, 6: 93-102. doi:10.1007/s11332-011-0103-4
31. Dollman, J., Olds, T.S., Esterman, A., and Kupke, T. 2010 Pedometer step guidelines in relation to weight status among 5- to 16-year-old Australians. Ped. Exerc. Sci. 22(2): 288-300 PMID:20567049
32. Duncan, J.S., Schofield, G., and Duncan, E.K. 2006 Pedometer-determined physical activity and body composition in New Zealand children. Med. Sci. Sports Exerc. 38(8): 1402-1409. doi:10.1249/01.mss.0000227535.36046.97 PMID:16888452
33. Duncan, J.S., Schofield, G., Duncan, E.K., and Rush, E.C. 2008 Risk factors for excess body fatness in New Zealand children. Asia Pac. J. Clin. Nutr. 17(1): 138-147 PMID:18364339
34. Duncan, M., Birch, S., and Woodfield, L. 2012 Efficacy of an integrated school curriculum pedometer intervention to enhance physical activity and to reduce weight status in children. Eur. Phys. Ed. Rev. 18(3): 396-407. doi:10.1177/1356336X12450799
35. Eather, N., Morgan, P.J., and Lubans, D.R. 2013 Improving the fitness and physical activity levels of primary school children: results of the Fit-4-Fun group randomized controlled trial. Prevent. Med. 56(1): 12-19. doi:10.1016/j.ypmed.2012.10.019 PMID:23107669
36. Eiberg, S., Hasselstrøm, H., Grønfeldt, V., Froberg, K., Svensson, J., and Andersen, L.B. 2005 Maximum oxygen uptake and objectively measured physical activity in Danish children 6-7 years of age: the Copenhagen school child intervention study. Br. J. Sports Med. 39(10): 725-730. doi:10.1136/bjsm.2004.015230 PMID:16183768
37. Ekelund, U., Sardinha, L.B., Anderssen, S.A., Harro, M., Franks, P.W., Brage, S., et al. 2004 Associations between objectively assessed physical activity and indicators of body fatness in 9- to 10-y-old European children: a populationbased study from 4 distinct regions in Europe (the European Youth Heart Study). Am. J. Clin. Nutr. 80(3): 584-590 PMID:15321796
38. Ekelund, U., Brage, S., Froberg, K., Harro, M., Anderssen, S.A., Sardinha, L.B., et al. 2006 TV viewing and physical activity are independently associated with metabolic risk in children: the European Youth Heart Study. PLoS Med. 3(12): e488. doi:10.1371/journal.pmed.0030488
39. PMID:17194189
40. Ekelund, U., Anderssen, S., Andersen, L.B., Riddoch, C.J., Sardinha, L.B., Luan, J., et al. 2009 Prevalence and correlates of the metabolic syndrome in a population-based sample of European youth. Am. J. Clin. Nutr. 89(1): 90-96
41. PMID:19056570
42. Ekstedt, M., Nyberg, G., Ingre, M., Ekblom, O., and Marcus, C. 2013 Sleep, physical activity and BMI in six to ten-year-old children measured by accelerometry: a cross-sectional study. Int. J. Behav. Nutr. Phys. Act. 10(82). doi:10.1186/1479-5868-10-82 PMID:23800204
43. Esteban-Cornejo, I., Tejero-González, C.M., Martinez-Gomez, D., Cabanas-Sanchez, V., Fernández-Santos, J.R., Conde-Caveda, J., et al. 2014 Objectively measured physical activity has a negative but weak association with academic performance in children and adolescents. Acta Paediatr. 103(11): e501-e506. doi:10.1111/apa.12757 PMID:25048792
44. Farr, J.N., Lee, V.R., Blew, R.M., Lohman, T.G., and Going, S.B. 2011 Quantifying bone-relevant activity and its relation to bone strength in girls. Med. Sci. Sports Exerc. 43(3): 476-483. doi:10.1249/MSS.0b013e3181eeb2f2 PMID: 20631644
45. Ferrar, K., and Olds, T. 2010 Thin adolescents: Who are they? What do they do? Socio-demographic and use-of-time characteristics. Prev. Med. 51(3-4): 253-258. doi:10.1016/j.ypmed.2010.07.001 PMID:20630482
46. Finkelstein, E.A., Tan, Y.T., Malhotra, R., Lee, C.F., Goh, S.S., and Saw, S.M. 2013 A cluster randomized controlled trial of an incentive-based outdoor physical activity program. J. Pediatr. 163(1): 167-172. doi:10.1016/j.jpeds.2013.01.009 PMID:23415616
47. Ford, P.A., Perkins, G., and Swaine, I. 2013 Effects of a 15-week accumulated brisk walking programme on the body composition of primary school children. J. Sports Sci. 31(2): 114-122. doi:10.1080/02640414.2012.723816 PMID: 22989326
48. Francis, S.L., Letuchy, E.M., Levy, S.M., and Janz, K.F. 2014 Sustained effects of physical activity on bone health: Iowa Bone Development Study. Bone, 63: 95-100. doi:10.1016/j.bone.2014.03.004 PMID:24632502
49. Freedson, P., Bowles, H.R., Troiano, R., and Haskell, W. 2012 Assessment of physical activity using wearable monitors: recommendations for monitor calibration and use in the field. Med. Sci. Sports Exerc. 44(Suppl. 1): S1-S4. doi:10.1249/MSS.0b013e3182399b7e. PMID:22157769
50. Gracia-Marco, L., Moreno, L.A., Ortega, F.B., León, F., Sioen, I., Kafatos, A., et al. 2011a. Levels of physical activity that predict optimal bone mass in adoles-cents: the HELENA study. Am. J. Prev. Med. 40(6): 599-607. doi:10.1016/j.amepre.2011.03.001 PMID:21565650
51. Gracia-Marco, L., Vicente-Rodríguez, G., Casajús, J., Molnar, D., Castillo, M., and Moreno, L. 2011b. Effect of fitness and physical activity on bone mass in adolescents: the HELENA Study. Eur. J. Appl. Physiol. 111(11): 2671-2680. doi: 10.1007/s00421-011-1897-0 PMID:21394637
52. Gracia-Marco, L., Ortega, F.B., Casajús, J.A., Sioen, I., Widhalm, K., Béghin, L., et al. 2012 Socioeconomic status and bone mass in Spanish adolescents. The HELENA Study. J. Adolesc. Health, 50(5): 484-490. doi:10.1016/j.jadohealth.2011.08.018 PMID:22525112
53. Grydeland, M., Bergh, I.H., Bjelland, M., Lien, N., Andersen, L.F., Ommundsen, Y., et al. 2012 Correlates of weight status among Norwegian 11-year-olds: The HEIA study. BMC Publ. Health, 12(1053). PMID:23216675
54. Gutin, B., Owens, S., Okuyama, T., Riggs, S., Ferguson, M., and Litaker, M. 1999 Effect of physical training and its cessation on percent fat and bone density of children with obesity. Obes. Res. 7(2): 208-214. doi:10.1002/j.1550-8528.1999.tb00703.x. PMID:10102258
55. Gutin, B., Yin, Z., Humphries, M.C., and Barbeau, P. 2005a. Relations of moderate and vigorous physical activity to fitness and fatness in adolescents. Am. J. Clin. Nutr. 81(4): 746-750 PMID:15817847
56. Gutin, B., Howe, C.A., Johnson, M.H., Humphries, M.C., Snieder, H., and Barbeau, P. 2005b. Heart rate variability in adolescents: relations to physical activity, fitness, and adiposity. Med. Sci. Sports Exerc. 37(11): 1856-1863. doi: 10.1249/01.mss.0000175867.98628.27 PMID:16286853
57. Guyatt, G., Oxman, A.D., Akl, E.A., Kunz, R., Vist, G., Brozek, J., et al. 2011a. GRADE guidelines: 1 Introduction-GRADE evidence profiles and summary of findings tables. J. Clin. Epidemiol. 64(4): 383-394 PMID:21195583
58. Guyatt, G.H., Oxman, A.D., Sultan, S., Glasziou, P., Akl, E.A., Alonso-Coello, P., et al. 2011b. GRADE guidelines: 9 Rating up the quality of evidence. J. Clin. Epidemiol. 64(12): 1311-1316. doi:10.1016/j.jclinepi.2011.06.004 PMID:21802902
59. Hallal, P.C., Dumith, S.C., Reichert, F.F., Menezes, A.M.B., Arajo, C.L., Wells, C.K., et al. 2011 Cross-sectional and longitudinal associations between physical activity and blood pressure in adolescence: Birth Cohort Study. J. Phys. Act. Health, 8(4): 468-474 PMID:21597118
60. Hallal, P.C., Reichert, F.F., Ekelund, U., Dumith, S.C., Menezes, A.M., Victora, C.G., and Wells, J. 2012 Bidirectional cross-sectional and prospective associations between physical activity and body composition in adolescence: Birth cohort study. J. Sports Sci. 30(2): 183-190. doi:10.1080/02640414.2011.631570 PMID:22141438
61. Hamilton, M.T., Hamilton, D.G., and Zderic, T.W. 2004 Exercise physiology versus inactivity physiology: an essential concept for understanding lipoprotein lipase regulation. Exerc. Sport Sci. Rev. 32(4): 161-166 PMID:15604935
62. Hands, B., and Parker, H. 2008 Pedometer-determined physical activity, BMI, and waist girth in 7- to 16-year-old children and adolescents. J. Phys. Act. Health, 5(Suppl. 1): s153-s165 PMID:18364519
63. Hands, B., Larkin, D., Parker, H., Straker, L., and Perry, M. 2009 The relationship among physical activity, motor competence and health-related fitness in 14-year-old adolescents. Scand. J. Med. Sci. Sports, 19(5): 655-663. doi:10.1111/j.1600-0838.2008.00847.x. PMID:18694431
64. Hansen, D.M., Hermann, D, Lambourne, K., Lee, J., and Donnelly, J.E. 2014 Linear/nonlinear relations of activity and fitness with children’s academic achievement. Med. Sci. Sports Exerc. 46(12): 2279-2285. doi:10.1249/MSS.0000000000000362 PMID:24781896
65. Hasselstrøm, H., Karlsson, K.M., Hansen, S.E., Grønfeldt, V., Froberg, K., and Andersen, L.B. 2007 Peripheral bone mineral density and different intensities of physical activity in children 6-8 years old: the Copenhagen School Child Intervention study. Calcif. Tissue Int. 80(1): 31-38. doi:10.1007/s00223-006-0137-9 PMID:17205330
66. Hay, J., Maximova, K., Durksen, A., Carson, V., Rinaldi, R.L., Torrance, B., et al. 2012 Physical activity intensity and cardiometabolic risk in youth. Arch. Pediatr. Adolesc. Med. 166(11): 1022-1029. doi:10.1001/archpediatrics.2012.1028
67. PMID:22965682
68. Hearst, M.O., Sirard, J.R., Lytle, L., Dengel, D.R., and Berrigan, D. 2012 Comparison of 3 measures of physical activity and associations with blood pressure, HDL, and body composition in a sample of adolescents. J. Phys. Act. Health, 9(1): 78-85 PMID:22232509
69. Heidemann, M., Molgaard, C., Husby, S., Schou, A.J., Klakk, H., Moller, N.C., et al. 2013 The intensity of physical activity influences bone mineral accrual in childhood: the childhood health, activity and motor performance school (the CHAMPS) study, Denmark. BMC Pediatr. 13: 32. doi:10.1186/1471-2431-13-32 PMID:23452342
70. Henderson, M., Gray-Donald, K., Mathieu, M.E., Barnett, T.A., Hanley, J.A., O’Loughlin, J., et al. 2012 How are physical activity, fitness, and sedentary behavior associated with insulin sensitivity in children? Diabetes Care, 35(6): 1272-1278. doi:10.2337/dc11-1785 PMID:22492585
71. Henderson, M., Gray-Donald, K., Rabasa-Lhoret, R., Bastard, J.P., Barnett, T.A., Benedetti, A., et al. 2014 Insulin secretion and its association with physical activity, fitness and screen time in children. Obesity, 22(2): 504-511. doi:10.1002/oby.20619 PMID:24030901
72. Herman, K.M., Sabiston, C.M., Tremblay, A., and Paradis, G. 2014 Self-rated health in children at risk for obesity: associations of physical activity, sedentary behavior, and BMI. J. Phys. Act. Health, 11(3): 543-552. doi:10.1123/jpah.2012-0124 PMID:23416732
73. Higgins, J.P., Altman, D.G., Gotzsche, P.C., Juni, P., Moher, D., Oxman, A.D., et al. 2011 The Cochrane Collaboration’s tool for assessing risk of bias in randomised trials. BMJ, 343: d5928. doi:10.1136/bmj.d5928 PMID:22008217
74. Hjorth, M.F., Chaput, J.P., Michaelsen, K., Astrup, A., Tetens, I., and Sjodin, A. 2013 Seasonal variation in objectively measured physical activity, sedentary time, cardio-respiratory fitness and sleep duration among 8-11 year-old Danish children: a repeated-measures study. BMC Publ. Health, 13: 808 PMID: 24010811
75. Hjorth, M.F., Chaput, J.P., Damsgaard, C.T., Dalskov, S.M., Andersen, R., Astrup, A., et al. 2014a. Low physical activity level and short sleep duration are associated with an increased cardio-metabolic risk profile: a longitudinal study in 8-11 year old Danish children. PLoS ONE, 9(8): e104677. doi:10.1371/journal.pone.0104677 PMID:25102157
76. Hjorth, M.F., Chaput, J.P., Ritz, C., Dalskov, S.M., Andersen, R., Astrup, A., et al. 2014b. Fatness predicts decreased physical activity and increased sedentary time, but not vice versa: support from a longitudinal study in 8- to 11-year-old children. Int. J. Obes. 38(7): 959-965. doi:10.1038/ijo.2013.229 PMID:24304596
77. Holman, R.M., Carson, V., and Janssen, I. 2011 Does the fractionalization of daily physical activity (sporadic vs. bouts) impact cardiometabolic risk factors in children and youth? PLoS ONE, 6(10): e25733 PMID:21998688
78. Huang, S.Y., Hogg, J., Zandieh, S., and Bostwick, S.B. 2012 A ballroom dance classroom program promotes moderate to vigorous physical activity in elementary school children. Am. J. Health Prom. 26(3): 160-165. doi:10.4278/ajhp.090625-QUAN-203 PMID:22208413
79. Hurtig-Wennlof, A., Ruiz, J.R., Harro, M., and Sjostrom, M. 2007 Cardiorespiratory fitness relates more strongly than physical activity to cardiovascular disease risk factors in healthy children and adolescents: the European Youth Heart Study. Eur. J. Cardiovasc. Prev. Rehab. 14(4): 575-581. doi:10.1097/HJR.0b013e32808c67e3 PMID:17667650
80. Janssen, I., and LeBlanc, A.G. 2010 Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act. 7: 40. doi:10.1186/1479-5868-7-40 PMID:20459784
81. Janssen, I., Wong, S.L., Colley, R., and Tremblay, M.S. 2013 The fractionalization of physical activity throughout the week is associated with the cardiometabolic health of children and youth. BMC Publ. Health, 13: 554. doi:10.1186/1471-2458-13-554 PMID:23742137
82. Janz, K.F., Burns, T.L., Torner, J.C., Levy, S.M., Paulos, R., Willing, M.C., and Warren, J.J. 2001 Physical activity and bone measures in young children: the Iowa bone development study. Pediatrics, 107(6): 1387-1393. doi:10.1542/peds.107.6.1387 PMID:11389262
83. Janz, K.F., Burns, T.L., Levy, S.M., Torner, J.C., Willing, M.C., Beck, T.J., et al. 2004 Everyday activity predicts bone geometry in children: The Iowa Bone Development Study. Med. Sci. Sports Exerc. 36(7): 1124-1131. doi:10.1249/01.MSS.0000132275.65378.9D. PMID:15235315
84. Janz, K.F., Burns, T.L., Levy, S.M., Iowa, Bone, and Development, Study. 2005 Tracking of activity and sedentary behaviors in childhood: the Iowa Bone Development Study. Am. J. Prevent. Med. 29(3): 171-178. doi:10.1016/j.amepre.2005.06.001 PMID:16168865
85. Janz, K.F., Gilmore, J.M., Burns, T.L., Levy, S.M., Torner, J.C., Willing, M.C., and Marshall, T.A. 2006 Physical activity augments bone mineral accrual in young children: The Iowa Bone Development study. J. Pediatr. 148(6): 793-799. doi:10.1016/j.jpeds.2006.01.045 PMID:16769389
86. Janz, K.F., Gilmore, J.M., Levy, S.M., Letuchy, E.M., Burns, T.L., and Beck, T.J. 2007 Physical activity and femoral neck bone strength during childhood: the Iowa Bone Development Study. Bone, 41(2): 216-222. doi:10.1016/j.bone.2007.05.001 PMID:17560839
87. Janz, K.F., Medema-Johnson, H.C., Letuchy, E.M., Burns, T.L., Gilmore, J.M.E., Torner, J.C., et al. 2008 Subjective and objective measures of physical activity in relationship to bone mineral content during late childhood: the Iowa Bone Development Study. Br. J. Sports Med. 42(8): 658-663. doi:10.1136/bjsm.2008.047779 PMID:18603581
88. Janz, K.F., Kwon, S., Letuchy, E.M., Eichenberger, Gilmore, J.M., Burns, T.L., Torner, J.C., et al. 2009 Sustained effect of early physical activity on body fat mass in older children. Am. J. Prevent. Med. 37(1): 35-40. doi:10.1016/j.amepre.2009.03.012 PMID:19423269
89. Janz, K.F., Letuchy, E.M., Eichenberger, Gilmore, J.M., Burns, T.L., Torner, J.C., Willing, M.C., and Levy, S.M. 2010 Early physical activity provides sustained bone health benefits later in childhood. Med. Sci. Sports Exerc. 42(6): 1072-1078
90. PMID:19997029
91. Janz, K.F., Letuchy, E.M., Francis, S.L., Metcalf, K.M., Burns, T.L., and Levy, S.M. 2014a. Objectively measured physical activity predicts hip and spine bone mineral content in children and adolescents ages 5-15 years: Iowa Bone Development Study. Front. Endocrinol. 5: 112 PMID:25076937
92. Janz, K.F., Letuchy, E.M., Burns, T.L., Eichenberger, Gilmore, J.M., Torner, J.C., and Levy, S.M. 2014b. Objectively measured physical activity trajectories predict adolescent bone strength: Iowa Bone Development Study. Br. J. Sports Med. 48(13): 1032-1036. doi:10.1136/bjsports-2014-093574 PMID:24837241
93. Jimenez-Pavon, D., Ortega, F.B., Artero, E.G., Labayen, I., Vicente-Rodriguez, G., Huybrechts, I., et al. 2012 Physical activity, fitness, and serum leptin concentrations in adolescents. J. Pediatr. 160(4): 598-603. doi:10.1016/j.jpeds.2011.09.058 PMID:22082954
94. Jimenez-Pavon, D., Fernandez-Vazquez, A., Alexy, U., Pedrero, R., Cuenca-Garcia, M., Polito, A., et al. 2013a. Association of objectively measured physical activity with body components in European adolescents. BMC Publ. Health, 13: 667 PMID:23866681
95. Jimenez-Pavon, D., Konstabel, K., Bergman, P., Ahrens, W., Pohlabeln, H., Hadjigeorgiou, C., et al. 2013b. Physical activity and clustered cardiovascular disease risk factors in young children: a cross-sectional study (the IDEFICS study). BMC Med. 11: 172. doi:10.1186/1741-7015-11-172 PMID:23899208
96. Jimenez-Pavon, D., Ruiz, J.R., Ortega, F.B., Martinez-Gomez, D., Moreno, S., Urzanqui, A., et al. 2013c. Physical activity and markers of insulin resistance in adolescents: role of cardiorespiratory fitness levels - the HELENA study. Pediatr. Diabetes, 14(4): 249-258. doi:10.1111/pedi.12000 PMID:23301989
97. Johnson, C.C., Murray, D.M., Elder, J.P., Jobe, J.B., Dunn, A.L., Kubik, M., et al. 2008 Depressive symptoms and physical activity in adolescent girls. Med. Sci. Sports Exerc. 40(5): 818-826. doi:10.1249/MSS.0b013e3181632d49 PMID: 18408618
98. Katzmarzyk, P.T., Barreira, T.V., Broyles, S.T., Champagne, C.M., Chaput, J.P., Fogelholm, M., et al. 2015a. Relationship between lifestyle behaviors and obesity in children ages 9-11: results from a 12-country study. Obesity, 23(8): 1696-1702. doi:10.1002/oby.21152 PMID:26173093
99. Katzmarzyk, P.T., Barreira, T.V., Broyles, S.T., Champagne, C.M., Chaput, J.P., Fogelholm, M., et al. 2015b. Physical activity, sedentary time, and obesity in an international sample of children. Med. Sci. Sports Exerc. 47(10): 2062-2069. doi:10.1249/MSS.0000000000000649 PMID:25751770
100. Kelly, E.B., Parrs-Medina, D., Pfeiffer, K.A., Dowda, M., Conway, T.L., Webber, L.S., et al. 2010 Correlates of physical activity in black, Hispanic, and white middle school girls. J. Phys. Act. Health, 7(2): 184-193 PMID:20484757
101. Knowles, G., Pallan, M., Thomas, G.N., Ekelund, U., Cheng, K.K., Barrett, T., and Adab, P. 2013 Physical activity and blood pressure in primary school children: a longitudinal study. Hypertension, 61(1): 70-75. doi:10.1161/HYPERTENSIONAHA.112.201277 PMID:23150507
102. Kriemler, S., Zahner, L., Schindler, C., Meyer, U., Hartmann, T., Hebestreit, H., et al. 2010 Effect of school based physical activity programme (KISS) on fitness and adiposity in primary schoolchildren: cluster randomised controlled trial. BMJ, 340: c785. doi:10.1136/bmj.c785 PMID:20179126
103. Kristensen, P.L., Moeller, N.C., Korsholm, L., Kolle, E., Wedderkopp, N., Froberg, K., and Andersen, L.B. 2010 The association between aerobic fitness and physical activity in children and adolescents: the European youth heart study. European Journal of Applied Physiology, 110(2): 267-275. doi:10.1007/s00421-010-1491-x. PMID:20458593
104. Kwon, S., Janz, K.F., Burns, T.L., and Levy, S.M. 2011 Association between lightintensity physical activity and adiposity in childhood. Pediatr. Exerc. Sci. 23(2): 218-229 PMID:21633134
105. Lambourne, K., Hansen, D.M., Szabo, A.N., Lee, J., Herrmann, S.D., and Donnelly, J.E. 2013 Indirect and direct relations between aerobic fitness, physical activity, and academic achievement in elementary school students. Mental Health Phys. Act. 6(3): 165-171. doi:10.1016/j.mhpa.2013.06.002 PMID: 25984236
106. Lamotte, C., Iliescu, C., Beghin, L., Salleron, J., Gonzalez-Gross, M., Marcos, A., et al. 2013 Association of socioeconomic status, truncal fat and sICAM-1 with carotid intima-media thickness in adolescents: the HELENA Study. Atherosclerosis, 228(2): 460-465. doi:10.1016/j.atherosclerosis.2013.03.007 PMID: 23561648
107. Larouche, R., Boyer, C., Tremblay, M.S., and Longmuir, P. 2014 Physical fitness, motor skill, and physical activity relationships in grade 4 to 6 children. Appl. Physiol. Nutr. Metab. 39(5): 553-559. doi:10.1139/apnm-2013-0371
108. Lawman, H.G., Wilson, D.K., Van, Horn, M.L., and Zarrett, N. 2012 The role of motivation in understanding social contextual influences on physical activity in underserved adolescents in the ACT Trial: a cross-sectional study. Childhood Obes. 8(6): 542-550 PMID:23181920
109. Leary, S.D., Ness, A.R., Smith, G.D., Mattocks, C., Deere, K., Blair, S.N., and Riddoch, C. 2008 Physical activity and blood pressure in childhood: findings from a population-based study. Hypertension, 51(1): 92-98. doi:10.1161/HYPERTENSIONAHA.107.099051 PMID:18071055
110. LeBlanc, A.G., and Janssen, I. 2010 Dose-response relationship between physical activity and dyslipidemia in youth. Can. J. Cardiol. 26(6): 201-205 PMID: 20548982
111. Lohman, T.G., Ring, K., Schmitz, K.H., Treuth, M.S., Loftin, M., Yang, S., et al. 2006 Associations of body size and composition with physical activity in adolescent girls. Med. Sci. Sports Exerc. 38(6): 1175-1181. doi:10.1249/01.mss.0000222846.27380.61 PMID:16775560
112. Lohman, T.G., Ring, K., Pfeiffer, K., Camhi, S., Arredondo, E., Pratt, C., et al. 2008 Relationships among fitness, body composition, and physical activity. Med. Sci. Sports Exerc. 40(6): 1163-1170. doi:10.1249/MSS.0b013e318165c86b. PMID: 18460987
113. Loprinzi, P., Cardinal, B., Crespo, C., Brodowicz, G., Andersen, R., Sullivan, E., and Smit, E. 2013 Objectively measured physical activity and C-reactive protein: National Health and Nutrition Examination Survey 2003-2004 Scand. J. Med. Sci. Sports, 23(2): 164-170. doi:10.1111/j.1600-0838.2011.01356.x. PMID: 21812825
114. Machado-Rodrigues, A.M., Coelho-e-Silva, M.J., Mota, J., Padez, C., Ronque, E., Cumming, S.P., and Malina, R.M. 2012 Cardiorespiratory fitness, weight status and objectively measured sedentary behaviour and physical activity in rural and urban Portuguese adolescents. J. Child Health Care, 16(2): 166-177. doi:10.1177/1367493511430676 PMID:22363047
115. Manios, Y., Moschonis, G., Chrousos, G.P., Lionis, C., Mougios, V., Kantilafti, M., et al. 2013 The double burden of obesity and iron deficiency on children and adolescents in Greece: the Healthy Growth Study. J. Hum. Nutr. Diet. 26(5): 470-478. doi:10.1111/jhn.12025 PMID:23279448
116. Mark, A.E., and Janssen, I. 2008 Dose-response relation between physical activity and blood pressure in youth. Med. Sci. Sports Exerc. 40(6): 1007-1012. doi:10.1249/MSS.0b013e318169032d. PMID:18461007
117. Mark, A.E., and Janssen, I. 2009 Influence of bouts of physical activity on overweight in youth. Am. J. Prevent. Med. 36(5): 416-421. doi:10.1016/j.amepre.2009.01.027 PMID:19362696
118. Mark, A.E., and Janssen, I. 2011 Influence of movement intensity and physical activity on adiposity in youth. J. Phys. Act. Health, 8(2): 164-173 PMID: 21415443
119. Marshall, S.J., and Ramirez, E. 2011 Reducing sedentary behavior: a new paradigm in physical activity promotion. Am. J. Lifestyle Med. 5(6): 518-530. doi:10.1177/1559827610395487
120. Martinez-Gomez, D., Ruiz, J.R., Ortega, F.B., Casajus, J.A., Veiga, O.L., Widhalm, K., et al. 2010a. Recommended levels and intensities of physical activity to avoid low-cardiorespiratory fitness in European adolescents: The HELENA study. Am. J. Hum. Biol. 22(6): 750-756. doi:10.1002/ajhb.21076 PMID:20721983
121. Martinez-Gomez, D., Ruiz, J.R., Ortega, F.B., Veiga, O.L., Moliner-Urdiales, D., Mauro, B., et al. 2010b. Recommended levels of physical activity to avoid an excess of body fat in European adolescents: the HELENA Study. Am. J. Prevent. Med. 39(3): 203-211. doi:10.1016/j.amepre.2010.05.003 PMID:20709251
122. Martinez-Gomez, D., Gomez-Martinez, S., Ruiz, J.R., Diaz, L.E., Ortega, F.B., Widhalm, K., et al. 2012 Objectively-measured and self-reported physical activity and fitness in relation to inflammatory markers in European adolescents: the HELENA Study. Atherosclerosis, 221(1): 260-267. doi:10.1016/j.atherosclerosis.2011.12.032 PMID:22265274
123. Matthews, C.E., Chen, K.Y., Freedson, P.S., Buchowski, M.S., Beech, B.M., Pate, R.P., et al. 2008 Amount of time spent in sedentary behaviors in the United States, 2003-2004 Am. J. Epidemiol. 167(7): 875-881. doi:10.1093/aje/kwm390 PMID:18303006
124. Meinhardt, U., Witassek, F., Petrò, R., Fritz, C., and Eiholzer, U. 2013 Strength training and physical activity in boys: a randomized trial. Pediatrics, 132(6): 1105-1111. doi:10.1542/peds.2013-1343 PMID:24190687
125. Mendoza, J.A., Nicklas, T.A., Liu, Y., Stuff, J., and Baranowski, T. 2012 General versus central adiposity and relationship to pediatric metabolic risk. Metab. Syndrome Rel. Dis. 10(2): 128-136. doi:10.1089/met.2011.0064 PMID:22149935
126. Meyer, U., Schindler, C., Zahner, L., Ernst, D., Hebestreit, H., van Mechelen, W., et al. 2014 Long-term effect of a school-based physical activity program (KISS) on fitness and adiposity in children: a cluster-randomized controlled trial. PLoS ONE, 9(2): e87929. doi:10.1371/journal.pone.0087929 PMID:24498404
127. Mitchell, J.A., Pate, R.R., España-Romero, V., O’Neill, J.R., Dowda, M., and Nader, P.R. 2013 Moderate-to-vigorous physical activity is associated with decreases in body mass index from ages 9 to 15 years. Obesity, 21(3): e280-e293. doi:10.1002/oby.20118 PMID:23592682
128. Moher, D., Liberati, A., Tetzlaff, J., and Altman, D.G. 2009 Preferred reporting items for systematic reviews and meta-analyses: the PRISMA Statement. J. Clin. Epidemiol. 62(10): 1006-1012. doi:10.1016/j.jclinepi.2009.06.005 PMID: 19631508
129. Moliner-Urdiales, D., Ortega, F.B., Vicente-Rodriguez, G., Rey-Lopez, J.P., Gracia-Marco, L., Widhalm, K., et al. 2010 Association of physical activity with muscular strength and fat-free mass in adolescents: the HELENA Study. Eur. J. Appl. Physiol. 109(6): 1119-1127. doi:10.1007/s00421-010-1457-z. PMID: 20373108
130. Moreira, C., Santos, R., de Farias Junior, J.C., Vale, S., Santos, P.C., Soares-Miranda, L., et al. 2011 Metabolic risk factors, physical activity and physical fitness in Azorean adolescents: a cross-sectional study. BMC Publ. Health, 11(214). doi:10.1186/1471-2458-11-214 PMID:21470414
131. Morrison, K.M., Bugge, A., El-Naaman, B., Eisenmann, J.C., Froberg, K., Pfeiffer, K.A., et al. 2012 Inter-relationships among physical activity, body fat, and motor performance in 6- to 8-year-old Danish children. Pediatr. Exerc. Sci. 24(2): 199-209 PMID:22728412
132. Mota, J., Soares-Miranda, L., Silva, J.M., Dos, Santos, S.S., and Vale, S. 2012 Influence of body fat and level of physical activity on rate-pressure product at rest in preschool children. Am. J. Hum. Biol. 24(5): 661-665. doi:10.1002/ajhb.22294 PMID:22639056
133. Ness, A.R., Leary, S.D., Mattocks, C., Blair, S.N., Reilly, J.J., Wells, J., et al. 2007 Objectively measured physical activity and fat mass in a large cohort of children. PLoS Med. 4(3): e97. doi:10.1371/journal.pmed.0040097 PMID: 17388663
134. Nguyen, T.H., Tang, H.K., Kelly, P., van der Ploeg, H.P., and Dibley, M.J. 2010 Association between physical activity and metabolic syndrome: a cross sectional survey in adolescents in Ho Chi Minh City, Vietnam. BMC Publ. Health, 10(141). PMID:20236509
135. Okely, A., Salmon, J., Vella, S., Cliff, D., Timperio, A., Tremblay, M., et al. 2012 A systematic review to update the Australian Physical Activity Guidelines for Children and Young People. Report prepared for the Australian Government Department of Health.
136. Ortega, F.B., Ruiz, J.R., and Sjöström, M. 2007 Physical activity, overweight and central adiposity in Swedish children and adolescents: the European Youth Heart Study. Int. J. Behav. Nutr. Phys. Act. 4: 61. doi:10.1186/1479-5868-4-61 PMID:18021444
137. Ortega, F.B., Ruiz, J.R., Hurtig-Wennlöf, A., and Sjöström, M. 2008 Physically active adolescents are more likely to have a healthier cardiovascular fitness level independently of their adiposity status. The European youth heart study. Revista Espanola de Cardiologia, 61(2): 123-129. [In Spanish.] doi:10.1157/13116199 PMID:18364180
138. Ortega, F.B., Ruiz, J.R., Hurtig-Wennlof, A., Vicente-Rodriguez, G., Rizzo, N.S., Castillo, M.J., and Sjöström, M. 2010 Cardiovascular fitness modifies the associations between physical activity and abdominal adiposity in children and adolescents: the European Youth Heart Study. Br. J. Sports Med. 44(4): 256-262. doi:10.1136/bjsm.2008.046391 PMID:18463298
139. Ottevaere, C., Huybrechts, I., De, Bourdeaudhuij, I., Sjöström, M., Ruiz, J.R., Ortega, F.B., et al. 2011 Comparison of the IPAQ-A and Actigraph in relation to VO2max among European adolescents: The HELENA study. J. Sci. Med. Sport, 14(4): 317-324. doi:10.1016/j.jsams.2011.02.008 PMID:21444243
140. Owen, C.G., Nightingale, C.M., Rudnicka, A.R., Sattar, N., Cook, D.G., Ekelund, U., and Whincup, P.H. 2010 Physical activity, obesity and cardiometabolic risk factors in 9- to 10-year-old UK children of white European, South Asian and black African-Caribbean origin: the Child Heart And health Study in England (CHASE). Diabetologia, 53(8): 1620-1630. doi:10.1007/s00125-010-1781-1 PMID:20454952
141. Pangrazi, R.P., Beighle, A., Vehige, T., and Vack, C. 2003 Impact of Promoting Lifestyle Activity for Youth (PLAY) on children’s physical activity. J. School Health, 73(8): 317-321. doi:10.1111/j.1746-1561.2003.tb06589.x. PMID:14593948
142. Peart, T., Velasco, Mondragon, H.E., Rohm-Young, D., Bronner, Y., and Hossain, M.B. 2011 Weight status in US youth: the role of activity, diet, and sedentary behaviors. Am. J. Health Behav. 35(6): 756-764 PMID:22251766
143. Quiros-Tejeira, R.E., Rivera, C.A., Ziba, T.T., Mehta, N., Smith, C.W., and Butte, N.F. 2007 Risk for nonalcoholic fatty liver disease in Hispanic youth with BMI > or ≥95th percentile. J. Pediatr. Gastroenterol. Nutr. 44(2): 228-236. doi:10.1097/MPG.0b013e31802d4acc. PMID:17255837
144. Reilly, J.J., Penpraze, V., Hislop, J., Davies, G., Grant, S., and Paton, J.Y. 2008 Objective measurement of physical activity and sedentary behaviour: review with new data. Arch. Dis. Child. 93(7): 614-619. doi:10.1136/adc.2007.133272
145. Rey-Lopez, J.P., Bel-Serrat, S., Santaliestra-Pasias, A., de Moraes, A.C., Vicente-Rodriguez, G., Ruiz, J.R., et al. 2013 Sedentary behaviour and clustered metabolic risk in adolescents: the HELENA study. Nutr. Metab. Cardiovasc. Dis. 23(10): 1017-1024. doi:10.1016/j.numecd.2012.06.006
146. Riddoch, C.J., Leary, S.D., Ness, A.R., Blair, S.N., Deere, K., Mattocks, C., et al. 2009 Prospective associations between objective measures of physical activity and fat mass in 12-14 year old children: the Avon Longitudinal Study of Parents and Children (ALSPAC). BMJ, 339: b4544. doi:10.1136/bmj.b4544 PMID:19942665
147. Ridgers, N.D., Salmon, J., Ridley, K., O’Connell, E., Arundell, L., and Timperio, A. 2012 Agreement between activPAL and ActiGraph for assessing children’s sedentary time. Int. J. Behav. Nutr. Phys. Act. 9: 15
148. Ried-Larsen, M., Grontved, A., Froberg, K., Ekelund, U., and Andersen, L.B. 2013 Physical activity intensity and subclinical atherosclerosis in Danish adolescents: The European Youth Heart Study. Scand. J. Med. Sci. Sports, 23(3): e168-e177 PMID:23336399
149. Rizzo, N.S., Ruiz, J.R., Hurtig-Wennlöf, A., Ortega, F.B., and Sjöström, M. 2007 Relationship of physical activity, fitness, and fatness with clustered metabolic risk in children and adolescents: the European youth heart study. J. Pediatr. 150(4): 388-394. [Erratum appears in J Pediatr. 2008 Dec; 153(6): 874.] doi:10.1016/j.jpeds.2006.12.039 PMID:17382116
150. Rizzo, N.S., Ruiz, J.R., Oja, L., Veidebaum, T., and Sjöström, M. 2008 Associations between physical activity, body fat, and insulin resistance (homeostasis model assessment) in adolescents: the European Youth Heart Study. Am. J. Clin. Nutr. 87(3): 586-592 PMID:18326595
151. Rowland, T.W., Martel, L., Vanderburgh, P., Manos, T., and Charkoudian, N. 1996 The influence of short-term aerobic training on blood lipids in healthy 10-12 year old children. Int. J. Sports Med. 17(7): 487-492. doi:10.1055/s-2007-972883 PMID:8912062
152. Ruiz, J.R., Rizzo, N.S., Hurtig-Wennlöf, A., Ortega, F.B., Wärnberg, J., and Sjöström, M. 2006 Relations of total physical activity and intensity to fitness and fatness in children: the European Youth Heart Study. Am. J. Clin. Nutr. 84(2): 299-303. [Erratum appears in Am. J. Clin. Nutr. 2009 Feb;89(2):656.] PMID:16895875
153. Ruiz, J.R., Hurtig-Wennlöf, A., Ortega, F.B., Patterson, E., Nilsson, T.K., Castillo, M.J., and Sjöström, M. 2007 Homocysteine levels in children and adolescents are associated with the methylenetetrahydrofolate reductase 677C>T genotype, but not with physical activity, fitness or fatness: the European Youth Heart Study. Br. J. Nutr. 97(2): 255-262. doi:10.1017/S0007114507280535 PMID:17298693
154. Ruiz, J.R., Ortega, F.B., Martinez-Gomez, D., Labayen, I., Moreno, L.A., De Bourdeaudhuij, I., et al. 2011 Objectively measured physical activity and sedentary time in European adolescents: the HELENA Study. Am. J. Epidemiol. 174(2): 173-184. doi:10.1093/aje/kwr068 PMID:21467152
155. Saavedra, J.M., Escalante, Y., Dominguez, A.M., Garcia-Hermoso, A., and Hernandez-Mocholi, M.A. 2014 Prediction of correlates of daily physical activity in Spanish children aged 8-9 years. Scand. J. Med. Sci. Sports, 24(3): e213-e219 PMID:24224913
156. Sakuragi, S., Abhayaratna, K., Gravenmaker, K.J., O’Reilly, C., Srikusalanukul, W., Budge, M.M., et al. 2009 Influence of adiposity and physical activity on arterial stiffness in healthy children: the lifestyle of our kids study. Hypertension, 53(4): 611-616. doi:10.1161/HYPERTENSIONAHA.108.123364 PMID:19273744
157. Sanders, T., Cliff, D.P., and Lonsdale, C. 2014 Measuring adolescent boys’ physical activity: bout length and the influence of accelerometer epoch length. PLoS ONE, 9(3): e92040. doi:10.1371/journal.pone.0092040 PMID:24643129
158. Santos, R., Mota, J., Okely, A.D., Pratt, M., Moreira, C., Coelho-e-Silva, M., et al. 2014 The independent associations of sedentary behaviour and physical activity on cardiorespiratory fitness. Br. J. Sports Med. 48(20): 1508-1512. doi:10.1136/bjsports-2012-091610 PMID:23410883
159. Sardinha, L.B., Andersen, L.B., Anderssen, S.A., Quiterio, A.L., Ornelas, R., Froberg, K., et al. 2008 Objectively measured time spent sedentary is associated with insulin resistance independent of overall and central body fat in 9- to 10-year-old Portuguese children. Diabetes Care, 31(3): 569-575. doi:10.2337/dc07-1286 PMID:18070991
160. Sayers, A., Mattocks, C., Deere, K., Ness, A., Riddoch, C., and Tobias, J.H. 2011 Habitual levels of vigorous, but not moderate or light, physical activity is positively related to cortical bone mass in adolescents. J. Clin. Endocrinol. Metab. 96(5): e793-e802. doi:10.1210/jc.2010-2550 PMID:21325463
161. Schardt, C., Adams, M.B., Owens, T., Keitz, S., and Fontelo, P. 2007 Utilization of the PICO framework to improve searching PubMed for clinical questions. BMC Med. Inf. Decis. Making, 7: 16. doi:10.1186/1472-6947-7-16 PMID:17573961
162. Schofield, G., Schofield, L., Hinckson, E.A., and Mummery, W.K. 2009 Daily step counts and selected coronary heart disease risk factors in adolescent girls. J. Sci. Med. Sport, 12(1): 148-155. doi:10.1016/j.jsams.2007.10.003 PMID: 18054843
163. Sebire, S.J., Jago, R., Fox, K.R., Page, A.S., Brockman, R., and Thompson, J.L. 2011 Associations between children’s social functioning and physical activity participation are not mediated by social acceptance: a cross-sectional study. Int. J. Behav. Nutr. Phys. Act. 8: 106. doi:10.1186/1479-5868-8-106 PMID:21961734
164. Shore, S.M., Sachs, M.L., DuCette, J.P., and Libonati, J.R. 2014 Step-count promotion through a school-based intervention. Clin. Nursing Res. 23(4): 402-420 PMID:23606186
165. Sigmundova, D., and Sigmund, E. 2012 The effect of physical activity program at school on reducing childhood obesity: a results of four-year longitudinal study. Med. Sport. Bohem. Slov. 21(3): 129-141
166. Silva, G., Andersen, L.B., Aires, L., Mota, J., Oliveira, J., and Ribeiro, J.C. 2013 Associations between sports participation, levels of moderate to vigorous physical activity and cardiorespiratory fitness in children and adolescents. J. Sports Sci. 31(12): 1359-1367. doi:10.1080/02640414.2013.781666 PMID: 23631663
167. Spittaels, H., Van Cauwenberghe, E., Verbestel, V., De Meester, F., Van Dyck, D., Verloigne, M., et al. 2012 Objectively measured sedentary time and physical activity time across the lifespan: a cross-sectional study in four age groups. Int. J. Behav. Nutr. Phys. Act. 9: 149. doi:10.1186/1479-5868-9-149 PMID: 23249449
168. St George, S.M., Wilson, D.K., Lawman, H.G., and Van Horn, M.L. 2013 Weight status as a moderator of the relationship between motivation, emotional social support, and physical activity in underserved adolescents. J. Pediatr. Psychol. 38(4): 387-397. doi:10.1093/jpepsy/jss178 PMID:23378172
169. Stabelini Neto, A., de Campos, W., dos Santos, G.C., and Mazzardo Junior, O. 2014 Metabolic syndrome risk score and time expended in moderate to vigorous physical activity in adolescents. BMC Pediatr. 14: 42. doi:10.1186/1471-2431-14-42 PMID:24529305
170. Standage, M., Gillison, F.B., Ntoumanis, N., and Treasure, D.C. 2012 Predicting students’ physical activity and health-related well-being: a prospective crossdomain investigation of motivation across school physical education and exercise settings. J. Sport Exerc. Psychol. 34(1): 37-60 PMID:22356882
171. Steele, R.M., van Sluijs, E.M., Cassidy, A., Griffin, S.J., and 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. doi:10.3945/ajcn.2009.28153 PMID:19776141
172. Stevens, J., Suchindran, C., Ring, K., Baggett, C.D., Jobe, J.B., Story, M., et al. 2004 Physical activity as a predictor of body composition in American Indian children. Obes. Res. 12(12): 1974-1980. doi:10.1038/oby.2004.248 PMID:15687399
173. Stevens, J., Murray, D.M., Baggett, C.D., Elder, J.P., Lohman, T.G., Lytle, L.A., et al. 2007 Objectively assessed associations between physical activity and body composition in middle-school girls: the Trial of Activity for Adolescent Girls. Am. J. Epidemiol. 166(11): 1298-1305. doi:10.1093/aje/kwm202 PMID: 17855391
174. Taverno Ross, S.E., Dowda, M., Beets, M.W., and Pate, R.R. 2013 Physical activity behavior and related characteristics of highly active eighth-grade girls. J. Adolesc. Health, 52(6): 745-751. doi:10.1016/j.jadohealth.2012.12.003 PMID: 23384978
175. Telford, R.D., Cunningham, R.B., Shaw, J.E., Dunstan, D.W., Lafferty, A.R., Reynolds, G.J., et al. 2009 Contrasting longitudinal and cross-sectional relationships between insulin resistance and percentage of body fat, fitness, and physical activity in children-the LOOK study. Pediatr. Diabetes, 10(8): 500-507. doi:10.1111/j.1399-5448.2009.00513.x. PMID:19460124
176. Telford, R.D., Cunningham, R.B., Telford, R.M., Kerrigan, J., Hickman, P.E., Potter, J.M., and Abhayaratna, W.P. 2012a. Effects of changes in adiposity and physical activity on preadolescent insulin resistance: the Australian LOOK longitudinal study. PLoS ONE, 7(10): e47438. doi:10.1371/journal.pone.0047438 PMID:23071806
177. Telford, R.D., Cunningham, R.B., Telford, R.M., and Abharatna, W.P. 2012b. Schools with fitter children achieve better literacy and numeracy results: evidence of a school cultural effect. Pediatric Exercise Science, 24(1): 45-57. [Erratum appears in Pediatr Exerc Sci. 2012 Nov; 24(4):ii. Note: Abharatna, Walter P [corrected to Abhayaratna, Walter P]. PMID:22433264
178. Telford, R.D., Cunningham, R.B., Telford, R.M., Olive, L.S., Byrne, D.G., and Abhayaratna, W.P. 2013 Benefits of early development of eye-hand coordination: Evidence from the LOOK longitudinal study. Scand. J. Med. Sci. Sports, 23(5): e263-e269. doi:10.1111/sms.12073 PMID:23614667
179. Tobias, J.H., Steer, C.D., Mattocks, C.G., Riddoch, C., and Ness, A.R. 2007 Habitual levels of physical activity influence bone mass in 11-year-old children from the United Kingdom: findings from a large population-based cohort. J. Bone Min. Res. 22(1): 101-109 PMID:17014381
180. Toseeb, U., Brage, S., Corder, K., Dunn, V.J., Jones, P.B., Owens, M., et al. 2014 Exercise and depressive symptoms in adolescents: a longitudinal cohort study. JAMA Pediatr. 168(12): 1093-1100. doi:10.1001/jamapediatrics.2014.1794 PMID:25317674
181. Tremblay, M.S., Esliger, D.W., Tremblay, A., and Colley, R. 2007 Incidental movement, lifestyle-embedded activity and sleep: new frontiers in physical activity assessment. Can. J. Publ. Health, 98(Suppl. 2): 208-217 PMID:18213950
182. Tremblay, M.S., Colley, R.C., Saunders, T.J., Healy, G.N., and Owen, N. 2010a. Physiological and health implications of a sedentary lifestyle. Appl. Physiol. Nutr. Metab. 35(6): 725-740. doi:10.1139/H10-079 PMID:21164543
183. Tremblay, M.S., Kho, M.E., Tricco, A.C., and Duggan, M. 2010b. Process description and evaluation of Canadian Physical Activity Guidelines development. Int. J. Behav. Nutr. Phys. Act. 7: 42. doi:10.1186/1479-5868-7-42 PMID: 20459786
184. Tremblay, M.S., Warburton, D.E.R., Janssen, I., Paterson, D.H., Latimer, A.E., Rhodes, R.E., et al. 2011 New Canadian physical activity guidelines. Appl. Physiol. Nutr. Metab. 36(1): 36-46. doi:10.1139/H11-009 PMID:21326376
185. Tremblay, M., Carson, V., Chaput, J.P., Dinh, T., Duggan, M., Faulkner, G., et al. 2016 Canadian 24-Hour Movement Guidelines for Children and Youth: An Integration of Physical Activity, Sedentary Behaviour, and Sleep. Appl. Physiol. Nutr. Metab. 41: This issue. doi:10.1139/apnm-2016-0151
186. Treuth, M.S., Baggett, C.D., Pratt, C.A., Going, S.B., Elder, J.P., Charneco, E.Y., and Webber, L.S. 2009 A longitudinal study of sedentary behavior and overweight in adolescent girls. Obesity, 17(5): 1003-1008. doi:10.1038/oby.2008.598 PMID:19165170
187. Troiano, R.P., Berrigan, D., Dodd, K.W., Mâsse, L.C., Tilert, T., and McDowell, M. 2008 Physical activity in the United States measured by accelerometer. Med. Sci. Sports Exerc. 40(1): 181-188. doi:10.1249/mss.0b013e31815a51b3 PMID: 18091006
188. Trost, S.G., Loprinzi, P.D., Moore, R., and Pfeiffer, K.A. 2011 Comparison of accelerometer cut points for predicting activity intensity in youth. Med. Sci. Sports Exerc. 43(7): 1360-1368. doi:10.1249/MSS.0b013e318206476e. PMID: 21131873
189. Trost, S.G., Zheng, Y., and Wong, W.K. 2014 Machine learning for activity recognition: hip versus wrist data. Physiol. Measure. 35(11): 2183-2189. doi:10.1088/0967-3334/35/11/2183 PMID:25340887
190. Tudor-Locke, C., Craig, C.L., Cameron, C., and Griffiths, J.M. 2011 Canadian children’s and youth’s pedometer-determined steps/day, parent-reported TV watching time, and overweight/obesity: the CANPLAY Surveillance Study. Int. J. Behav. Nutr. Phys. Act. 8: 66. doi:10.1186/1479-5868-8-66 PMID: 21702982
191. US Department of Health and Human Services. 2008 Physical Activity Guidelines for Americans. [Online.] Available from http://health.gov/paguidelines/pdf/paguide.pdf. [Accessed 4 November 2015.]
192. Verstraete, S.J., Cardon, G.M., De Clercq, D.L., and De Bourdeaudhuij, I. 2007 A comprehensive physical activity promotion programme at elementary school: the effects on physical activity, physical fitness and psychosocial correlates of physical activity. Publ. Health Nutr. 10(5): 477-484 PMID: 17411468
193. Wennlof, A.H., Yngve, A., Nilsson, T.K., and Sjostrom, M. 2005 Serum lipids, glucose and insulin levels in healthy schoolchildren aged 9 and 15 years from Central Sweden: reference values in relation to biological, social and lifestyle factors. Scand. J. Clin. Lab. Investig. 65(1): 65-76. doi:10.1080/00365510410003110 PMID:15859028
194. White, J., and Jago, R. 2012 Prospective associations between physical activity and obesity among adolescent girls: racial differences and implications for prevention. Arch. Pediatr. Adolesc. Med. 166(6): 522-527 PMID:22665029
195. Wiles, N.J., Haase, A.M., Lawlor, D.A., Ness, A., and Lewis, G. 2012 Physical activity and depression in adolescents: cross-sectional findings from the ALSPAC cohort. Social Psychiatry Psychiatric Epidemiol. 47(7): 1023-1033. doi:10.1007/s00127-011-0422-4 PMID:21826444
196. Williams, A.D., and Warrington, V. 2011 Get Fit Kids: A feasibility study of a pedometer-based walking program. Bariatric Nursing and Surgical Patient Care, 6(3): 139-143. doi:10.1089/bar.2011.9957
197. WHO. 2010 Global Recommendations on Physical Activity for Health. World Health Organization, Geneva, Switzerland. Available from apps.who.int/iris/ bitstream/10665/44399/1/9789241599979_eng.pdf. [Accessed 4November 2015.]
198. Young, D., Saksvig, B.I., Wu, T.T., Zook, K., Xia, L., Champaloux, S., et al. 2014 Multilevel correlates of physical activity for early, mid, and late adolescent girls. J. Phys. Act. Health, 11(5): 950-960. doi:10.1123/jpah.2012-0192 PMID: 23676305.