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Research Article

Objectively Measured Physical Activity and Fat Mass in a Large Cohort of Children

  • Andy R Ness mail,

    To whom correspondence should be addressed. E-mail: Andy.Ness@bristol.ac.uk

    Affiliation: Department of Oral and Dental Science, University of Bristol, United Kingdom

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  • Sam D Leary,

    Affiliation: Department of Social Medicine, University of Bristol, Bristol, United Kingdom

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  • Calum Mattocks,

    Affiliation: Department of Social Medicine, University of Bristol, Bristol, United Kingdom

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  • Steven N Blair,

    Affiliation: Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America

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  • John J Reilly,

    Affiliation: Division of Developmental Medicine, University of Glasgow, Glasgow, United Kingdom

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  • Jonathan Wells,

    Affiliation: Medical Research Council Childhood Nutrition Research Centre, Institute of Child Health, University College London, London, United Kingdom

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  • Sue Ingle,

    Affiliation: Department of Social Medicine, University of Bristol, Bristol, United Kingdom

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  • Kate Tilling,

    Affiliation: Department of Social Medicine, University of Bristol, Bristol, United Kingdom

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  • George Davey Smith,

    Affiliation: Department of Social Medicine, University of Bristol, Bristol, United Kingdom

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  • Chris Riddoch

    Affiliation: London Sport Institute, Middlesex University, London, United Kingdom

    ¤ Current address: School for Health, University of Bath, Bath, United KIngdom

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  • Published: March 20, 2007
  • DOI: 10.1371/journal.pmed.0040097

About the Authors

Andy R Ness
Department of Oral and Dental Science, University of Bristol, United Kingdom
Sam D Leary, Calum Mattocks, Sue Ingle, Kate Tilling, George Davey Smith
Department of Social Medicine, University of Bristol, Bristol, United Kingdom
Steven N Blair
Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America
John J Reilly
Division of Developmental Medicine, University of Glasgow, Glasgow, United Kingdom
Jonathan Wells
Medical Research Council Childhood Nutrition Research Centre, Institute of Child Health, University College London, London, United Kingdom
Chris Riddoch
London Sport Institute, Middlesex University, London, United Kingdom

Corresponding Author

Email: Andy.Ness@bristol.ac.uk

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

ARN, CM, GDS, and CR devised the analysis plan. ARN, SDL, CM, SNB, JJR, JW, SI, KT, GDS, and CR contributed to discussions that informed the analysis plan. SDL and SI carried out the analysis with advice from KT. ARN wrote the first draft of the paper. All authors commented on subsequent drafts and approved the final version of the paper. ARN had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.