Review of Hydration Research & Advice

Water, Drinking SignResearch Paper Title

Drinking Policies and Exercise-associated Hyponatraemia: Is Anyone Still Promoting Overdrinking?

Background

The purpose of this review was to describe the evolution of hydration research and advice on drinking during exercise from published scientific papers, books and non-scientific material (advertisements and magazine contents) and detail how erroneous advice is likely propagated throughout the global sports medicine community.

Methods

Hydration advice from sports-linked entities, the scientific community, exercise physiology textbooks and non-scientific sources was analysed historically and compared with the most recent scientific evidence.

Results & Conclusions

Drinking policies during exercise have changed substantially throughout history. Since the mid-1990s, however, there has been an increase in the promotion of overdrinking by athletes. While the scientific community is slowly moving away from “blanket” hydration advice in which one form of advice fits all and towards more modest, individualised, hydration guidelines in which thirst is recognised as the best physiological indicator of each subject’s fluid needs during exercise, marketing departments of the global sports drink industry continue to promote overdrinking.

Reference

Beltrami, F.G., Hew-Butler, T. & Noakes, T.D. (2008) Drinking Policies and Exercise-associated Hyponatraemia: Is Anyone Still Promoting Overdrinking? British Journal of Sports Medicine. 42(10), pp.796-801.

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