Different cardiorespiratory fitness expressions based on the maximal cycle ergometer test show no effect on the relation of cardiorespiratory fitness to the academic achievement of nine-year-olds

• Elvar Saevarsson,

  Roles Conceptualization, Data curation, Formal analysis, Methodology, Project administration, Writing – original draft, Writing – review & editing

  Affiliation School of Education, University of Iceland, Reykjavík, Iceland

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• Erla Svansdottir,

  Roles Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing

  Affiliation School of Education, University of Iceland, Reykjavík, Iceland

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• Sigurbjorn Arngrimsson,

  Roles Investigation, Methodology, Project administration, Validation, Writing – original draft, Writing – review & editing

  Affiliation School of Education, University of Iceland, Reykjavík, Iceland

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• Thorarinn Sveinsson,

  Roles Data curation, Formal analysis, Methodology, Supervision, Writing – original draft

  Affiliation Research Centre for Movements Sciences, University of Iceland, Reykjavík, Iceland

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• Erlingur Johannsson

  Roles Data curation, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Writing – original draft, Writing – review & editing

  * E-mail: erljo@hi.is

  Affiliations School of Education, University of Iceland, Reykjavík, Iceland, Department of Sport and Physical Activity, Western Norway University of Applied Sciences, Bergen, Norway

  http://orcid.org/0000-0002-8028-7851

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