Intense exercise and fainting sensations
#1
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Intense exercise and fainting sensations
Lately, after sitting or “position horizontally” for a while, when I stand up, I feel dizzy.
This usually occurs after long exercise session (cycling or gym).
It’s as if my blood pressure is so low that blood does not get to the head fast enough.
If I rest a day or two, I don’t get these “fainting” sensations.
Any similar experiences?
What am I doing wrong (eating, drinking, vitamins)?
This usually occurs after long exercise session (cycling or gym).
It’s as if my blood pressure is so low that blood does not get to the head fast enough.
If I rest a day or two, I don’t get these “fainting” sensations.
Any similar experiences?
What am I doing wrong (eating, drinking, vitamins)?
#2
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It could be dehydration. My doctor tests for dehydration by making me lie down for a couple of minutes, then takes my blood pressure when I sit up. Try drinking more and make sure you're getting enough sodium.
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You are not doing anything wrong. If you are in shape, you probably have a low heart rate and relatively low blood pressure. When you quickly stand up, your heart rate does not shoot up very fast (thanks to good conditioning) resulting in a drop in blood pressure to the brain. If you have a low blood pressure, the resulting drop can make you feel lightheaded for the few seconds it takes for your blood to get pumped back up there.
It's called transient orthostatic hypotension (sounds scary, eh!) and is common. I found an abstract to a study that concluded that the phenomenon is more pronounced in people having higher calf blood flow. Who better than cyclists to have high calf blood flow?
There is nothing to worry about unless your symptoms last longer than a few seconds. Of course, if you tend to do things like black out, or are concerned about it, go see your doctor.
It's called transient orthostatic hypotension (sounds scary, eh!) and is common. I found an abstract to a study that concluded that the phenomenon is more pronounced in people having higher calf blood flow. Who better than cyclists to have high calf blood flow?
There is nothing to worry about unless your symptoms last longer than a few seconds. Of course, if you tend to do things like black out, or are concerned about it, go see your doctor.
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Originally Posted by cnudell
Lately, after sitting or “position horizontally” for a while, when I stand up, I feel dizzy.
This usually occurs after long exercise session (cycling or gym).
It’s as if my blood pressure is so low that blood does not get to the head fast enough.
If I rest a day or two, I don’t get these “fainting” sensations.
Any similar experiences?
What am I doing wrong (eating, drinking, vitamins)?
This usually occurs after long exercise session (cycling or gym).
It’s as if my blood pressure is so low that blood does not get to the head fast enough.
If I rest a day or two, I don’t get these “fainting” sensations.
Any similar experiences?
What am I doing wrong (eating, drinking, vitamins)?
Keep us updated on how things work out for you.
Koffee
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I do like Koffee says and do a cool down after all my rides, even the rest days. I roll into my neighborhood and do a 3 mi loop at I ride at 115 HR or lower to cool down the legs and body. I try to ride for 10 - 15 min like this I start out this way also. Found that I feel better than if I just jump on the bike and ride and get off when I was done. The best cool down for me is riding with my 8yr old daughter after my ride. She like to beat up on daddy and win Gives me quality time with her and encourages her to ride while I teach her the proper way to ride around people and traffic.
#6
Just ride.
I get these, too, primarily for the reasons Supcom describes, primarily after a long, difficult ride. If I drink a after such a ride, I have to take extra care to stand slowly, preferably near something I can hang on to for balance, and wait for it to pass, otherwise I'll be on the floor in 15 seconds.
Skip the beer? It's better not to stand!
Skip the beer? It's better not to stand!
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Originally Posted by roadbuzz
I get these, too, primarily for the reasons Supcom describes, primarily after a long, difficult ride. If I drink a after such a ride, I have to take extra care to stand slowly, preferably near something I can hang on to for balance, and wait for it to pass, otherwise I'll be on the floor in 15 seconds.
Skip the beer? It's better not to stand!
Skip the beer? It's better not to stand!
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I get lightheaded sometimes when I stand as well. Just like you describe, it only happens on days I ride, it only lasts a few seconds, and if I take a day off, it doesn't happen. I came to the conclusion (I took a wild guess ) by myself that it was either related to my low blood preasure, or low blood sugar. I tried eating more incase it was the latter, and have noticed it doesn't really seem to happen when I eat more. I haven't really kept track of the occurances though, so that may just be coincidence.
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Hello All,
I am the original poster of this thread and I am reporting improvement!
Reading the replies on this forum and other, I believe it is related, in my case, to dehydration and lack of sodium.
I increase water drinking and salt intake and the symptoms as reduced drastically.
I am the original poster of this thread and I am reporting improvement!
Reading the replies on this forum and other, I believe it is related, in my case, to dehydration and lack of sodium.
I increase water drinking and salt intake and the symptoms as reduced drastically.