European Journal of Applied Physiology

, Volume 119, Issue 6, pp 1453–1454 | Cite as

Response to Armstrong and Bergeron

  • Martin D. HoffmanEmail author
  • Rhiannon M. J. Snipe
  • Ricardo J. S. Costa

We are pleased that our recent publication (Hoffman et al. 2018b) has been of interest and that it will receive further attention through our response to the letter from Armstrong and Bergeron (2019). Their letter is largely concentrated on attempting to refute three aspects of our work, which will be the focus of our response.

Their first issue relates to their misrepresentation that we indicated consuming water ad libitum “provide[s] for adequate hydration during prolonged exercise”. We carefully related our conclusions to running for 2 h and avoided referring to “prolonged exercise” because of the potential for misinterpretation. Additionally, we clearly pointed out that “the present data do not allow us to make conclusions about the adequacy of ad libitum drinking to support hydration during longer bouts of exercise where it is possible that greater water deficits could develop” (page 2694). Beyond the issue of clarifying the intent of “prolonged exercise”, Armstrong and Bergeron...


Author contributions

MDH drafted the response. All authors contributed to the revisions of the initial draft, and read and approved the final response.


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Copyright information

© This is a U.S. government work and its text is not subject to copyright protection in the United States; however, its text may be subject to foreign copyright protection  2019

Authors and Affiliations

  1. 1.Physical Medicine and Rehabilitation Service, Department of Veterans AffairsNorthern California Health Care SystemSacramentoUSA
  2. 2.Department of Physical Medicine and RehabilitationUniversity of California Davis Medical CenterSacramentoUSA
  3. 3.Ultra Sports Science FoundationEl Dorado HillsUSA
  4. 4.Centre for Sport Research, School of Exercise and Nutrition SciencesDeakin UniversityVictoriaAustralia
  5. 5.Department of Nutrition, Dietetics and FoodMonash UniversityVictoriaAustralia

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