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. 2007 Nov;92(11):963-9.
doi: 10.1136/adc.2006.112136. Epub 2007 Sep 13.

Objective measurement of levels and patterns of physical activity

Chris J Riddoch  1 , Calum Mattocks, Kevin Deere, Jo Saunders, Jo Kirkby, Kate Tilling, Sam D Leary, Steven N Blair, Andy R Ness
Affiliations

Objective measurement of levels and patterns of physical activity

Chris J Riddoch et al. Arch Dis Child. 2007 Nov.

Abstract

Objective: To measure the levels and patterns of physical activity, using accelerometers, of 11-year-old children participating in the Avon Longitudinal Study of Parents and Children (ALSPAC).

Design: Cross-sectional analysis.

Setting: ALSPAC is a birth cohort study located in the former county of Avon, in the southwest of England. This study used data collected when the children were 11 years old.

Participants: 5595 children (2662 boys, 2933 girls). The children are the offspring of women recruited to a birth cohort study during 1991-2. The median age (95% CI) of the children is now 11.8 (11.6 to 11.9) years.

Methods: Physical activity was measured over a maximum of 7 consecutive days using the MTI Actigraph accelerometer.

Main outcome measures: Level and pattern of physical activity.

Results: The median physical activity level was 580 counts/min. Boys were more active than girls (median (IQR) 644 (528-772) counts/min vs 529 (444-638) counts/min, respectively). Only 2.5% (95% CI 2.1% to 2.9%) of children (boys 5.1% (95% CI 4.3% to 6.0%), girls 0.4% (95% CI 0.2% to 0.7%) met current internationally recognised recommendations for physical activity. Children were most active in summer and least active in winter (difference = 108 counts/min). Both the mother and partner's education level were inversely associated with activity level (p for trend <0.001 (both mother and partner)). The association was lost for mother's education (p for trend = 0.07) and attenuated for partner's education (p for trend = 0.02), after adjustment for age, sex, season, maternal age and social class.

Conclusions: A large majority of children are insufficiently active, according to current recommended levels for health.

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Conflict of interest statement

Competing interests: None.

References

    1. Department of Health At least 5 a week: physical activity and health outcomes: a review of the Chief Medical Officer. London: Department of Health, 2004
    1. Biddle S, Sallis J S, Cavill N. eds. Young and active? Young people and health‐enhancing physical activity—evidence and implications , 1st edn. London: Health Education Authority, 1998
    1. Strong W B, Malina R M, Blimkie C J.et al Evidence based physical activity for school‐age youth. J Pediatr 2005146732–737. - PubMed
    1. Trost S G, Pate R R, Sallis J F.et al Age and gender differences in objectively measured physical activity in youth. Med Sci Sports Exerc 200234350–355. - PubMed
    1. Riddoch C J, Bo Andersen L, Wedderkopp N.et al Physical activity levels and patterns of 9‐ and 15‐yr‐old European children. Med Sci Sports Exerc 20043686–92. - PubMed

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