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Old 08-03-13, 10:34 PM
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Originally Posted by bikepro View Post
I'm quite sure this is not true. If anything, your heart rate and BP will increase with dehydration as your body works harder to manage your core temperature.
No I think he's correct. BP drops when you are dehydrated. Here's a graph from The influence of rehydration mode after exercise dehydration on cardiovascular function looking at how best to rehydrate someone who is dehydrated by 4% of bodyweight after exercise. They found a combination of IV and oral fluids was best at rehydrating and bringing BP up.

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