Number of days required to estimate physical activity constructs objectively measured in different age groups: Findings from three Brazilian (Pelotas) population-based birth cohorts

• Luiza Isnardi Cardoso Ricardo ,

  Roles Conceptualization, Formal analysis, Writing – original draft, Writing – review & editing

  * E-mail: luizaicricardo@gmail.com

  Affiliation Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil

  http://orcid.org/0000-0002-1244-4501

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• Andrea Wendt,

  Roles Formal analysis, Writing – original draft, Writing – review & editing

  Affiliation Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil

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• Leony Morgana Galliano,

  Roles Methodology, Writing – original draft

  Affiliation Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil

  http://orcid.org/0000-0002-5599-0377

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• Werner de Andrade Muller,

  Roles Methodology, Writing – original draft

  Affiliation Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil

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• Gloria Izabel Niño Cruz,

  Roles Writing – original draft

  Affiliation Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil

  http://orcid.org/0000-0002-4951-5991

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• Fernando Wehrmeister,

  Roles Supervision, Visualization

  Affiliation Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil

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• Soren Brage,

  Roles Project administration, Supervision, Visualization

  Affiliation MRC Epidemiology Unit, University of Cambridge, Cambridge, England, United Kingdom

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• Ulf Ekelund,

  Roles Conceptualization, Funding acquisition, Project administration, Visualization

  Affiliation Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway

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• Inácio Crochemore M. Silva

  Roles Formal analysis, Validation, Visualization, Writing – review & editing

  Affiliations Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil, Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil

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