BACKGROUND: An optimal level of physical activity (PA) in adolescence influences the level of PA in adulthood. Although PA declines with age have been demonstrated repeatedly, few studies have been carried out on secular trends. The present study assessed levels, types and secular trends of PA and sedentary behaviour of a sample of adolescents in the Czech Republic. METHODS: The study comprised two cross-sectional cohorts of adolescents ten years apart. The analysis compared data collected through a week-long monitoring of adolescents' PA in 1998-2000 and 2008-2010. Adolescents wore either Yamax SW-701 or Omron HJ-105 pedometer continuously for 7 days (at least 10 hours per day) excluding sleeping, hygiene and bathing. They also recorded their number of steps per day, the type and duration of PA and sedentary behaviour (in minutes) on record sheets. In total, 902 adolescents (410 boys; 492 girls) aged 14-18 were eligible for analysis. RESULTS: Overweight and obesity in Czech adolescents participating in this study increased from 5.5% (older cohort, 1998-2000) to 10.4% (younger cohort, 2008-2010). There were no inter-cohort significant changes in the total amount of sedentary behaviour in boys. However in girls, on weekdays, there was a significant increase in the total duration of sedentary behaviour of the younger cohort (2008-2010) compared with the older one (1998-2000). Studying and screen time (television and computer) were among the main sedentary behaviours in Czech adolescents. The types of sedentary behaviour also changed: watching TV (1998-2000) was replaced by time spent on computers (2008-2010).The Czech health-related criterion (achieving 11,000 steps per day) decreased only in boys from 68% (1998-2000) to 55% (2008-2010). Across both genders, 55%-75% of Czech adolescents met the health-related criterion of recommended steps per day, however less participants in the younger cohort (2008-2010) met this criterion than in the older cohort (1998-2000) ten years ago. Adolescents' PA levels for the monitored periods of 1998-2000 and 2008-2010 suggest a secular decrease in the weekly number of steps achieved by adolescent boys and girls. CONCLUSION: In the younger cohort (2008-2010), every tenth adolescent was either overweight or obese; roughly twice the rate when compared to the older cohort (1998-2000). Sedentary behaviour seems relatively stable across the two cohorts as the increased time that the younger cohort (2008-2010) spent on computers is compensated with an equally decreased time spent watching TV or studying. Across both cohorts about half to three quarters of the adolescents met the health-related criterion for achieved number of steps. The findings show a secular decrease in PA amongst adolescents. The significant interaction effects (cohort × age; and cohort × gender) that this study found suggested that secular trends in PA differ by age and gender.

Palacky University in Olomouc Olomouc Czech Republic

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Tammelin T, Näyhä S, Hills AP, Järvelin MR. Adolescent participation in sports and adult physical activity. American Journal of Preventive Medicine. 2003;24(1):22–28. doi: 10.1016/S0749-3797(02)00575-5. PubMed DOI

Telama R, Yang X, Viikari J, Välimäki I, Wanne O, Raitakari O. Physical activity from childhood to adulthood: A 21-year tracking study. American Journal of Preventive Medicine. 2005;28(3):267–273. doi: 10.1016/j.amepre.2004.12.003. PubMed DOI

Azevedo MR, Araújo CL, Da Silva MC, Hallal PC. Tracking of physical activity from adolescence to adulthood: a population-based study. Revista de Saude Publica. 2007;41:69–75. PubMed

Gordon-Larsen P, Nelson MC, Popkin BM. Longitudinal physical activity and sedentary behavior trends: Adolescence to adulthood. American Journal of Preventive Medicine. 2004;27(4):277–283. PubMed

Hallal PC, Victora CG, Azevedo MR, Wells JCK. Adolescent physical activity and health: A systematic review. Sports Medicine. 2006;36(12):1019–1030. doi: 10.2165/00007256-200636120-00003. PubMed DOI

World Health Organisation. Global Recommendations on Physical Activity for Healht. Geneva, Switzerland: WHO Press; 2010. PubMed

Janssen I, LeBlanc A. Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. International Journal of Behavioral Nutrition and Physical Activity. 2010;7(1):40. doi: 10.1186/1479-5868-7-40. PubMed DOI PMC

Frömel K, Novosad J, Svozil Z. Pohybová aktivita a sportovní zájmy mládeže. (Physical activity and sporting interests of young people.) Olomouc, Czech Republic: Palacky University in Olomouc; 1999.

Martinez-Gomez D, Ruiz JR, Ortega FB, Veiga OL, Moliner-Urdiales D, Mauro B, Galfo M, Manios Y, Widhalm K, Béghin L. et al.Recommended levels of physical activity to avoid an excess of body fat in european adolescents: The HELENA study. American Journal of Preventive Medicine. 2010;39(3):203–211. doi: 10.1016/j.amepre.2010.05.003. PubMed DOI

Owen C, Nightingale C, Rudnicka A, Sattar N, Cook D, Ekelund U, Whincup P. 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. 2010;53:1620–1630. doi: 10.1007/s00125-010-1781-1. PubMed DOI PMC

Jago R, Wedderkopp N, Kristensen PL, Moller NC, Andersen LB, Cooper AR, Froberg K. Six-year change in youth physical activity and effect on fasting insulin and HOMA-IR. American Journal of Preventive Medicine. 2008;35(6):554–560. doi: 10.1016/j.amepre.2008.07.007. PubMed DOI

Allison KR, Adlaf EM, Dwyer JJM, Lysy DC, Irving HM. The decline in physical activity among adolescent students. Canadian Journal of Public Health. 2007;98(2):97. PubMed PMC

Nelson MC, Neumark-Stzainer D, Hannan PJ, Sirard JR, Story M. Longitudinal and secular trends in physical activity and sedentary behavior during adolescence. Pediatrics. 2006;118(6):e1627–1634. doi: 10.1542/peds.2006-0926. PubMed DOI

Sallis JF. Age-related decline in physical activity: a synthesis of human and animal studies. Medicine & Science in Sports & Exercise. 2000;32(9):1598–1600. PubMed

Van Mechelen W, Twisk JWR, Post GB, Snel J, Kemper HCG. Physical activity of young people: the Amsterdam Longitudinal Growth and Health Study. Medicine & Science in Sports & Exercise. 2000;32(9):1610–1616. PubMed

Pelclová J, El Ansari W, Vašíčková J. Is participation in after-school physical activity associated with increased total physical activity? A study of high school pupils in the Czech Republic. International Journal of Environmental Research and Public Health. 2010;7(7):2853–2865. doi: 10.3390/ijerph7072853. PubMed DOI PMC

Le Masurier GC, Bauman AE, Corbin CB, Konopack JF, Umstattd RM, Van Emmerik REA. Assessing walking behaviors of selected subpopulations. Medicine & Science in Sports & Exercise. 2008;40(7 Suppl):S594–S602. PubMed

Sallis JF, Saelens BE. Assessment of physical activity by self-report: Status, limitations, and future directions. Research Quarterly for Exercise and Sport. 2000;71(2):1–14. PubMed

Tudor-Locke CE, Williams JE, Reis JP, Pluto D. Utility of pedometers for assessing physical activity: convergent validity. Sports Medicine. 2002;32(12):795–808. doi: 10.2165/00007256-200232120-00004. PubMed DOI

De Vries SI, Van Hirtum HWJEM, Bakker I, Hopman-Rock M, Hirasing RA, Van Mechelen W. Validity and reproducibility of motion sensors in youth: A systematic update. Medicine & Science in Sports & Exercise. 2009;41(4):818–827. PubMed

De Cocker K, De Bourdeaudhuij I, Cardon GM. What do pedometer counts represent? A comparison between pedometer data and data from four different questionnaires. Public Health Nutrition. 2009;12:74–81. doi: 10.1017/S1368980008001973. PubMed DOI

Branca F, Nikogosian H, Lobstein T. The Challenge of obesity in the WHO European Region and the strategies for response: Summary. Copenhagen: WHO Regional Office for Europe; 2007.

Knai C, Suhrcke M, Lobstein T. Obesity in Eastern Europe: An overview of its health and economic implications. Economics & Human Biology. 2007;5:392. doi: 10.1016/j.ehb.2007.08.002. PubMed DOI

Hardy LL, Okely AD, Dobbins TA, Booth ML. Physical activity among adolescents in New South Wales (Australia): 1997 and 2004. Medicine & Science in Sports & Exercise. 2008;40(5):835–841. PubMed

Hamar P, Biddle S, Soós I, Takács B, Huszár A. The prevalence of sedentary behaviours and physical activity in Hungarian youth. Eur J Public Health. 2010;20:85–90. doi: 10.1093/eurpub/ckp100. PubMed DOI

Tudor-Locke C, Giles-Corti B, Knuiman M, McCormack G. Tracking of pedometer-determined physical activity in adults who relocate: results from RESIDE. International Journal of Behavioral Nutrition and Physical Activity. 2008;5(1):39. doi: 10.1186/1479-5868-5-39. PubMed DOI PMC

Cole TJ, Bellizzi MC, Flegal KM, Dietz WH. Establishing a standard definition for child overweight and obesity worldwide: international survey. BMJ. 2000;320(7244):1240. doi: 10.1136/bmj.320.7244.1240. PubMed DOI PMC

IASO. Appendix 1. Reported prevalence of child and adolescent overweight and obesity. Obesity Reviews. 2004;5:86–97.

Moreno LA, Blay MG, Rodríguez G, Blay VA, Mesana MI, Olivares JL, Fleta J, Sarría A, Bueno M, Group A-ZS. Screening Performances of the International Obesity Task Force Body Mass Index Cut-Off Values in Adolescents. Journal of the American College of Nutrition. 2006;25(5):403–408. PubMed

Bassett DR Jr, Ainsworth BE, Leggett SR, Mathien CA, Main JA, Hunter DC, Duncan GE. Accuracy of five electronic pedometers for measuring distance walked. Medicine & Science in Sports & Exercise. 1996;28(8):1071–1077. doi: 10.1097/00005768-199608000-00019. PubMed DOI

Crouter SE, Schneider PL, Karabulut M, Bassett DR Jr. Validity of 10 electronic pedometers for measuring steps, distance, and energy cost. Medicine & Science in Sports & Exercise. 2003;35(8):1455–1460. PubMed

Schneider PL, Crouter SE, Lukajic O, Bassett DR Jr. Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk. Medicine & Science in Sports & Exercise. 2003;35(10):1779–1784. PubMed

Sallis JF, Buono MJ, Roby JJ, Micale FG, Nelson JA. Seven-day recall and other physical activity self-reports in children and adolescents. Medicine & Science in Sports & Exercise. 1993;25(1):99–108. PubMed

Sallis JF, Strikmiller PK, Harsha DW, Feldman HA, Ehlinger S, Stone EJ, Williston J, Woods S. Validation of interviewer- and self-administered physical activity checklists for fifth grade students./Validation d ' une enquete ou on questionne cinquante enfants de l ' ecole primaire sur leurs activites physiques. Medicine & Science in Sports & Exercise. 1996;28(7):840–849. doi: 10.1097/00005768-199607000-00011. PubMed DOI

Válková H. Manuál výzkumného projektu "Tělesná výchova a zdraví". Olomouc: Palacky University, Faculty of Physical Cutlture; 1994. Sebepoznávací škála pohybových aktivit. PubMed

Tammelin T, Näyhä S, Laitinen J, Rintamäki H, Järvelin MR. Physical activity and social status in adolescence as predictors of physical inactivity in adulthood. Preventive Medicine. 2003;37(4):375–381. doi: 10.1016/S0091-7435(03)00162-2. PubMed DOI

Singh GK, Siahpush M, Kogan MD. Rising Social Inequalities in US Childhood Obesity, 2003-2007. Annals of Epidemiology. 2010;20(1):40–52. doi: 10.1016/j.annepidem.2009.09.008. PubMed DOI

Ulijaszek SJ, Koziel S. Nutrition transition and dietary energy availability in Eastern Europe after the collapse of communism. Economics & Human Biology. 2007;5(3):359–369. PubMed

Lakdawalla D, Philipson T. The growth of obesity and technological change. Economics & Human Biology. 2009;7(3):283–293. doi: 10.1016/j.ehb.2009.08.001. PubMed DOI PMC

Sigmundová D, El Ansari W, Sigmund E. Neighbourhood Environment Correlates of Physical Activity: A Study of Eight Czech Regional Towns. International Journal of Environmental Research and Public Health. 2011;8(2):341–357. doi: 10.3390/ijerph8020341. PubMed DOI PMC

Vincent SD, Pangrazi RP. An examination of the activity pattern of elementary school children. Pediatric Exercise Science. 2002;14(4):432–441.

Tudor-Locke CE, Pangrazi RP, Corbin CB, Rutherford WJ, Vincent SD, Raustorp A, Tomson LM, Cuddihy TF. BMI-referenced standards for recommended pedometer-determined steps/day in children. Preventive Medicine. 2004;38(6):857–864. doi: 10.1016/j.ypmed.2003.12.018. PubMed DOI

Moliner-Urdiales D, Ruiz JR, Ortega FB, Jiménez-Pavón D, Vicente-Rodriguez G, Rey-López JP, Martínez-Gómez D, Casajús JA, Mesana MI, Marcos A. et al.Secular trends in health-related physical fitness in Spanish adolescents: The AVENA and HELENA Studies. Journal of Science and Medicine in Sport. 2010;13(6):584–588. doi: 10.1016/j.jsams.2010.03.004. PubMed DOI

Raustorp A, Ekroth Y. Eight-year secular trends of pedometer-determined physical activity in young Swedish adolescents. Journal of Physical Activity & Health. 2010;7(3):369–374. PubMed

Raustorp A, Ludvigsson J. Secular trends of pedometer-determined physical activity in Swedish school children. Acta Paediatrica. 2007;96(12):1824–1828. doi: 10.1111/j.1651-2227.2007.00525.x. PubMed DOI

Skalik K, Frömel K, Sigmund E, Vasendova J, Wirdheim E. Weekly physical activity in secondary school students: a comparative probe into Czech, Polish and Swedish conditions. Acta Universitatis Palackianae Olomucensis Gymnica. 2001;31(1):21–26.

Sigmund E, Frömel K, Klimtová H, Tomik R. Structure and level of physical activity in children aged 11-12 according to the body weight. Acta Universitatis Palackianea Olomucensis Gymnica. 2000;30(1):25–31.

Tudor-Locke CE, Ainsworth BE, Adair LS, Popkin BM. Physical activity in Filipino youth: the Cebu Longitudinal Health and Nutrition Survey. International Journal of Obesity & Related Metabolic Disorders. 2003;27(2):181. doi: 10.1038/sj.ijo.802207. PubMed DOI

Bélanger M, Gray-Donald K, O'Loughlin J, Paradis G, Hanley J. When adolescents drop the ball: Sustainability of physical activity in youth. American Journal of Preventive Medicine. 2009;37(1):41–49. doi: 10.1016/j.amepre.2009.04.002. PubMed DOI

Sigmund E, Sigmundová D, Frömel K, Vašíčková J. Preferred contents in Physical Education lessons - positively evaluated means for the achievement of a higher intensity of physical activity by girls. Acta Universitatis Palackianae Olomucensis Gymnica. 2010;40(2):7–16.

Lazarou C, Soteriades ES. Children's physical activity, TV watching and obesity in Cyprus: the CYKIDS study. Eur J Public Health. 2010;20:70–77. doi: 10.1093/eurpub/ckp093. PubMed DOI

Czech Statistical Office. Statistical yearbook of the Czech Republic 2010. Prague: Scientia; 2010.

Liou YM, Liou TH, Chang LC. Obesity among adolescents: sedentary leisure time and sleeping as determinants. Journal of Advanced Nursing. 2010;66:1246–1256. doi: 10.1111/j.1365-2648.2010.05293.x. PubMed DOI

Rey-López JP, Tomas C, Vicente-Rodriguez G, Gracia-Marco L, Jiménez-Pavón D, Pérez-Llamas F, Redondo C, Bourdeaudhuij ID, Sjöström M, Marcos A. et al.Sedentary behaviours and socio-economic status in Spanish adolescents: the AVENA study. The European Journal of Public Health. 2011;21(2):151–157. doi: 10.1093/eurpub/ckq035. PubMed DOI

Telama R, Nupponen H, Pieron M. Physical activity among young people in the context of lifestyle. European Physical Education Review. 2005;11(2):115–137. doi: 10.1177/1356336X05052892. DOI

Surveillance of physical activity and sedentary behaviour in czech children and adolescents: a scoping review of the literature from the past two decades

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