From Fellrnr.com, Running tips
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== Introduction ==
The advice given to runners on hydration has changed over time and looks set to continue to change. There are competing forces at work - sports drink manufacturers, event organizers (often sponsored by the manufacturers) and scientists (some also sponsored by the manufacturers). One thing is clear about hydration - it is important. Incorrect hydration can lead to impaired performance, and in extreme cases, death.
A condition related to dehydration is Hyponatremia, which is where the sodium (salt) level in the blood becomes too dilute. This is a dangerous condition that has killed a number of runners. More on this later.
This blog entry is a follow on to [[
'Practical Hydration]] ' which should be read first.
== Effects of dehydration ==
Hyponatremia among Runners in the Boston Marathon
Micronutrient Information Center - Sodium
Caffeine dehydration : Caffeine and alcohol - just how dehydrating are they?
Muscle Cramps : No link between hydration and cramps
Hydration - fluid intake advice and tips
The Relation Of Glycogen To Water Storage In The Liver
Cracking the Code on Hydration
Dehydration reduces cardiac output and increases systemic and cutaneous vascular resistance during exercise
BAA - HYDRATION, DEHYDRATION AND HYPONATREMIA
USATF Announces Major Changes in Hydration Guidelines for Long Distance Runners
Metabolic and exercise endurance effects of coffee and caffeine ingestion
Effects of caffeine ingestion on body fluid balance and thermoregulation during exercise
Caffeine ingestion and fluid balance: a review.
Sodium Status of Collapsed Marathon Runners