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. 2014 Feb 22;6:7. doi: 10.1186/2052-1847-6-7

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Copyright © 2014 Zingg et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Changes in swimming speeds across years for the annual fastest women and men in 5 km (Panel A), 10 km (Panel B) and 25 km (Panel C) and for the annual ten fastest women and men in 5 km (Panel D), 10 km (Panel E) and 25 km (Panel F).