Secular trends in physical fitness and obesity in Danish 9-year-old girls and boys: Odense School Child Study and Danish substudy of the European Youth Heart Study

Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense University, Odense NV, Denmark.
Scandinavian Journal of Medicine and Science in Sports (Impact Factor: 2.9). 07/2004; 14(3):150-5. DOI: 10.1111/j.1600-0838.2004.00365.x
Source: PubMed


Low physical fitness and obesity have been shown to be associated with cardiovascular disease (CVD) risk. Obesity is on the increase in many countries, but little is known about physical fitness trends. Monitoring of changes in fitness and obesity in the population is important for preventive strategies, and the aim of this study was to analyse the secular trends in fitness and body composition in Danish children.
Two representative population studies were conducted 12 years apart on 9-year-old children in the same location: the Odense School Child Study in 1985-86 and the European Youth Heart Study in 1997-98. In both studies, physical fitness was determined by a maximal cycle ergometer test, and obesity was assessed by skinfolds.
Boys had a lower physical fitness and were fatter in 1997-98 than in 1985-86. In addition, an increased polarization is emerging, with the difference between the fit and the unfit and the difference between the lean and the fat being greater in 1997-98 than in 1985-86. In girls, a similar polarization was found, but no overall change in fitness or obesity.
The negative trend and increased polarization for physical fitness and obesity in Danish children suggest a future generation with a higher degree of CVD risk.

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Available from: Lars Bo Andersen, Sep 30, 2014
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    • "Prior studies have shown that both PAL and obesity track from childhood and adolescence to adulthood (Deshmukh-Taskar et al., 2006; Fernandes and Zanesco, 2010). Therefore, it is a common belief that maintenance of adequate health-related physical fitness protects against the development of CD in adulthood (Chen et al., 2002; Fernandes and Zanesco, 2010; Wedderkopp et al., 2004). Furthermore, studies have shown that obese youths are less physically active and have lower fitness than nonobese youths (Coelho-e-Silva et al., 2013; Ekelund et al., 2002; Shang et al., 2010). "
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    • "As a result, it is important to explore the heterogeneous impact. For fitness , the categories developed by Åstrand (1952), further supplemented by data from Andersen et al. (1987) and Wedderkopp et al. (2004), 5 were used to define very " good fitness, " " bad fitness " and " very bad fitness " (see Appendix 2 for the thresholds). "

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