Temporal trends in the cardiorespiratory fitness of children and adolescents representing 19 high-income and upper middle-income countries between 1981 and 2014

Datos Bibliográficos

ID23314318
AutoresGrant R Tomkinson (0000-0001-7601-9670, University of South Australia, autor de correspondencia), Justin J Lang (0000-0002-1768-319X, Children's Hospital of Eastern Ontario), Mark S Tremblay (0000-0002-8307-3568, Children's Hospital of Eastern Ontario)
Año2019
Volumen53
Número8
Páginas478-486
Fecha de publicación2019-04-01
Peer ReviewedSí
Open AccessNo
TipoARTICLE
RevistaBritish Journal of Sports Medicine (JOURNAL)
Identificadores de la revistaISSN: 0306-3674 • E-ISSN: 1473-0480
EditorialBMJ (PUBLISHER • GB)
DOI10.1136/bjsports-2017-097982
PMID29084727
OpenAlexW2767134449
IdiomaEN
Citas recibidas73
Referencias citadas52

OBJECTIVE: To estimate international and national temporal trends in the cardiorespiratory fitness (CRF) of children and adolescents and to examine relationships between temporal trends in CRF and temporal trends in broad socioeconomic and health-related indicators across countries. METHODS: Data were obtained from a systematic search of studies that explicitly reported 20 m shuttle run test (a validated measure of CRF) descriptive data on apparently healthy individuals aged 9-17 years. Following the estimation of relative peak oxygen uptake (mL/kg/min) as a measure of CRF, sample-weighted temporal trends were estimated at the country-sex-age level using best-fitting linear or polynomial regression models relating the year of testing to mean CRF. Poststratified population-weighted mean changes in absolute and per cent CRF were estimated. Pearson's correlations were used to describe the association between linear temporal trends in CRF and linear temporal trends in broad socioeconomic and health-related indicators. RESULTS: Temporal trends were estimated from 965 264 children and adolescents from 19 high-income and upper middle-income countries between 1981 and 2014, using data from 137 studies. Collectively, there was a moderate decline in CRF of 3.3 mL/kg/min (95% CI -3.5 to -3.1), equivalent to a decline of 7.3% (95% CI -7.8% to -6.7%) over the 33-year time period. This international decline diminished with each decade and stabilised near zero around 2000. The decline was larger for boys than girls and was similar for children and adolescents. Trends also differed in magnitude and direction between countries, with most showing declines. There was a strong negative association between country-specific trends in income inequality (Gini index) and trends in CRF across 18 countries; meaning, countries approaching income equality had more favourable trends in CRF. CONCLUSIONS: There has been a substantial decline in CRF since 1981, which is suggestive of a meaningful decline in population health. However, the international trend in CRF has not followed the anticipated trajectory, diminishing and stabilising with negligible change since 2000. CRF data are needed from children in low-income and middle-income countries to more confidently determine true international trends and determine whether temporal trends are similar to those observed in high-income and upper middle-income countries.

Cardiorespiratory fitness · Linear regression · Physical therapy · Population · Socioeconomic status · Statistics · Cardiovascular and exercise physiology · Demography · Mathematics · Medicine · Obesity, Physical Activity, Diet · Physical Activity and Health