Author’s Reply to Valenzuela et al.: Comment on “Drinking Strategies: Planned Drinking Versus Drinking to Thirst”
- 107 Downloads
I have read the letter by Valenzuela et al.  regarding my review article entitled “Drinking strategies: planned drinking versus drinking to thirst”  and would like to address several misconceptions in the letter.
Valenzuela et al.  state that my final advice in the review is to “…avoid drinking to thirst in order to prevent BW losses > 2% during activities of high intensity or long duration (> 1–2 h), or when exercising in warm/hot environments” . However, this statement is not accurate, the recommendation is to employ a tailored drinking program to avoid potential thermoregulatory, cardiovascular, and exercise performance impairment (2% body weight loss), particularly in the conditions described. This recommendation is particularly true for individuals with high sweat rates, who are heat-acclimatized or for those whose primary concern is optimal performance.
Valenzuela et al.  state that I describe incidences of hyponatremia as “rare,” which is also...
The views, opinions, and/or findings in this letter are those of the author and should not be construed as official Department of the Army or Department of Defense positions, policies, or decisions unless so designated by other official designation.
Compliance with Ethical Standards
No sources of funding were used to assist in the preparation of this letter.
Conflict of interest
Robert W. Kenefick has no conflicts of interest relevant to the content of this letter.
- 1.Valenzuela PL, Morales JS, de la Villa P, Lucia A. Comment on: “Drinking strategies: planned drinking versus drinking to thirst”. Sports Med. 2018.Google Scholar
- 11.James LJ, Moss J, Henry J, Papadopoulou C, Mears SA. Hypohydration impairs endurance performance: a blinded study. Physiol Rep. 2017; 5(12).Google Scholar
- 12.Adams JD, Sekiguchi Y, Suh HG, Seal AD, Sprong CA, Kirkland TW, et al. Dehydration impairs cycling performance, independently of thirst: a blinded study. Med Sci Sports Exerc. 2018.Google Scholar
- 16.Dill DB, Bock AV, Edwards HT. Mechanisms for dissipating heat in man and dog. Am J Physiol. 1933;104:36–43.Google Scholar
- 17.Bean WB, Eichna LW. Performance in relation to environmental temperature: reactions of normal young men to simulated desert environment. Fed Proc. 1945;2(3):144–58.Google Scholar
- 18.Eichna LW, Bean WB, Ashe WF, Nelson N. Performance in relation to environmental temperature. Reactions of normal young men to hot, humid (simulated jungle) environment. Bull Johns Hopkins Hosp. 1945;76(1):25–58.Google Scholar
- 19.Adolf EF, Barker JP, Hoy PA. Multiple factors in thirst. Am J Physiol. 1954;178(3):538–62.Google Scholar
- 20.Robinson S, Turrell ES, Belding HS, Horvath SM. Rapid acclimatization to work in hot climates. Am J Physiol. 1943;140:168–76.Google Scholar