Six-year changes in body mass index and cardiorespiratory fitness of English schoolchildren from an affluent area.
cross_sectional · Level IV
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- Record sourced from PubMed, PMID 26041699.
- Also identified by DOI 10.1038/ijo.2015.105.
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Abstract
We compared values of body mass index (BMI) and cardiorespiratory fitness (20 m shuttle-run test) of n=157 boys and n=150 girls aged 10-11 measured in 2014 with measures from 2008 and 1998. Boys' fitness was lower (d=0.68) in 2014 than 2008, despite a small (d=0.37) decline in BMI. Girl's BMI changed trivially (d=0.08) but cardiorespiratory fitness was lower (d=0.47) in 2014 than 2008. This study suggests fitness is declining at 0.95% per year, which exceeds the 0.8% rate of decline we reported between 1998 and 2008 and is double the global average of 0.43%. Declines in fitness were independent of changes in BMI suggesting continued reductions in English children's habitual physical activity levels.
Medical subject headings
- Exercise Test
- Physical Fitness
- Schools