Validation of the Polar OH1 and M600 optical heart rate sensors during front crawl swim training

• Bjørn Harald Olstad ,

  Contributed equally to this work with: Bjørn Harald Olstad, Christoph Zinner

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – review & editing

  * E-mail: b.h.olstad@nih.no

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

  http://orcid.org/0000-0002-5670-2269

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• Christoph Zinner

  Contributed equally to this work with: Bjørn Harald Olstad, Christoph Zinner

  Roles Conceptualization, Formal analysis, Methodology, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  Affiliations Institute of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway, Department of Sport, University of Applied Sciences for Police and Administration of Hesse, Wiesbaden, Germany

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