Dehydration


Fluid Intake, Dehydration, And Exercise Part IV

So far we investigated the history of fluid ingestion in Part I, demonstrated why it is the metabolic rate that predicts temperature in Part II, and weighed up the strengths and weaknesses of the lab-based and field studies in Part III. For Part IV we will look at the thirst mechanism and why waiting until you are thirsty is not "too late."

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Fluid Intake Dehydration And Exercise Part III

Welcome back for Part III in this series on fluid intake and dehydration during exercise! Thus far we have examined a brief history of fluid replacement during endurance exercise in Article I, and in Article II we tried to explain how some of the lab research has perhaps been over-interpreted, and how that has lead to a false belief that ingesting fluid during exercise will keep you cool. In that article we reported the findings of earlier researchers who concluded the following:

* The core temperature is maintained at a higher level during exercise
* It is the metabolic rate (or in other words, how hard you are exercising) that predicts the core temperature

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Fluid Intake Dehydration And Exercise Part II

This is the second article in our series on fluid intake, dehydration and exercise. In the last article we looked at the history of fluid intake and how radically our beliefs on the subject had changed. Today we turn our attention to the evidence that has accompanied this shift, beginning with the contention that runners who become dehydrated are likely to develop heat stroke.

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Fluid Intake, Dehydration, and Exercise Part I

The story begins, as most do, at the beginning…a look at the history of fluid intake and drinking during endurance exercise, which serves to illustrate an important point, one which will be covered again and again in this series…For this post, we acknowledge Professor Tim Noakes of UCT, the fluid pioneer whose lifelong pursuit of the truth in this area (and a lone battle for much of it) has thrown up the excellent quotes and anecdotes we use as we delve into the issue.

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