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Sports Medicine
Erschienen in: Sports Medicine 12/2013

01.12.2013 | Review Article

The Quantification of Body Fluid Allostasis During Exercise

verfasst von: Nicholas Tam, Timothy D. Noakes

Erschienen in: Sports Medicine | Ausgabe 12/2013

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Abstract

The prescription of an optimal fluid intake during exercise has been a controversial subject in sports science for at least the past decade. Only recently have guidelines evolved from ‘blanket’ prescriptions to more individualised recommendations. Currently the American College of Sports Medicine advise that sufficient fluid should be ingested to ensure that body mass (BM) loss during exercise does not exceed >2 % of starting BM so that exercise-associated medical complications will be avoided. Historically, BM changes have been used as a surrogate for fluid loss during exercise. It would be helpful to accurately determine fluid shifts in the body in order to provide physiologically appropriate fluid intake advice. The measurement of total body water via D2O is the most accurate measure to detect changes in body fluid content; other methods, including bioelectrical impedance, are less accurate. Thus, the aim of this review is to convey the current understanding of body fluid allostasis during exercise when drinking according to the dictates of thirst (ad libitum). This review examines the basis for fluid intake prescription with the use of BM, the concepts of ‘voluntary and involuntary dehydration’ and the major routes by which the body gains and loses fluid during exercise.
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Metadaten
Titel
The Quantification of Body Fluid Allostasis During Exercise
verfasst von
Nicholas Tam
Timothy D. Noakes
Publikationsdatum
01.12.2013
Verlag
Springer International Publishing
Erschienen in
Sports Medicine / Ausgabe 12/2013
Print ISSN: 0112-1642
Elektronische ISSN: 1179-2035
DOI
https://doi.org/10.1007/s40279-013-0089-y

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