Reviewing the current methods of assessing hydration in athletes

Journal of the International Society of Sports Nutrition

Oliver R. Barley¹  Chris R. Abbiss¹  Dale W. Chapman² 

[1] Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, 6027, Joondalup, WA, Australia;Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, 6027, Joondalup, WA, Australia;Performance Support, New South Wales Institute of Sport, Sydney Olympic Park, NSW, Australia;

关键词: Hydration;    Water balance;    Fluid;    Dehydration;    Hypohydration;   

DOI  :  10.1186/s12970-020-00381-6

来源: Springer

【 摘 要 】

BackgroundDespite a substantial body of research, no clear best practice guidelines exist for the assessment of hydration in athletes. Body water is stored in and shifted between different sites throughout the body complicating hydration assessment. This review seeks to highlight the unique strengths and limitations of various hydration assessment methods described in the literature as well as providing best practice guidelines.Main bodyThere is a plethora of methods that range in validity and reliability, including complicated and invasive methods (i.e. neutron activation analysis and stable isotope dilution), to moderately invasive blood, urine and salivary variables, progressing to non-invasive metrics such as tear osmolality, body mass, bioimpedance analysis, and sensation of thirst. Any single assessment of hydration status is problematic. Instead, the recommended approach is to use a combination, which have complementary strengths, which increase accuracy and validity. If methods such as salivary variables, urine colour, vital signs and sensation of thirst are utilised in isolation, great care must be taken due to their lack of sensitivity, reliability and/or accuracy. Detailed assessments such as neutron activation and stable isotope dilution analysis are highly accurate but expensive, with significant time delays due to data analysis providing little potential for immediate action. While alternative variables such as hormonal and electrolyte concentration, bioimpedance and tear osmolality require further research to determine their validity and reliability before inclusion into any test battery.ConclusionTo improve best practice additional comprehensive research is required to further the scientific understanding of evaluating hydration status.

【 授权许可】

CC BY