Performance in youth track and field is associated with birth quartile. A register-based study among athletes in Norway from 10 years to senior level

• Hilde Gundersen ,

  Roles Conceptualization, Data curation, Formal analysis, Project administration, Writing – original draft

  * E-mail: hsg@hvl.no

  Affiliation Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences, Bergen, Norway

  https://orcid.org/0000-0001-6609-1257

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• Anette Harris,

  Roles Formal analysis, Writing – review & editing

  Affiliation Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway

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• Halvard Grendstad,

  Roles Writing – review & editing

  Affiliation Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway

  https://orcid.org/0000-0001-7709-5579

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• Morten Kristoffersen,

  Roles Writing – review & editing

  Affiliation Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences, Bergen, Norway

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• Atle Guttormsen,

  Roles Writing – original draft, Writing – review & editing

  Affiliation NMBU School of Economics and Business, Norwegian University of Life Sciences (NMBU), Ås, Norway

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• Terje Dalen,

  Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

  Affiliation Department of Physical Education and Sport Science, Faculty of Teacher Education and Arts, Nord University, Levanger, Norway

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• Cecilie Brekke Rygh

  Roles Writing – original draft, Writing – review & editing

  Affiliation Department of Health and Functioning, Western Norway University of Applied Sciences, Bergen, Norway

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