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Endurance sports like running will lead (even in healthy individuals) to very very mild cases of orthostatic intolerance. If you go from sitting to standing, y

Endurance sports like running will lead (even in healthy individuals) to very very mild cases of orthostatic intolerance. If you go from sitting to standing, you might get lightheaded for a few seconds as the body is too slow to react. More here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2343225/pdf/tjp0551-0401.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2343225/pdf/tjp0...

rhaps0dy 11y ago
Do you mean that this condition is caused by endurance sports?
- revelation 11y ago
  Oh no, I just wanted to mention other more common faults of our poorly parameterized blood pressure PID controller.
- gnoway 11y ago
  The article points out that everyone will experience this at some point due to extended exertion. This girl's condition makes it happen more quickly than average.
js2 11y ago
Interesting. I've been a runner for over a decade and run 50+ miles/week. I experience light-headedness going from sitting to standing a few times a week.
- WildUtah 11y ago
  I bicycle 150 miles a week mostly on steep mountain roads. I seldom faint, but hopping out of bed to go take care of chores in the morning usually results in brief loss of balance and eyesight as my head loses blood pressure for a few seconds. Sometimes I have to sit down in the bedroom door frame so that I don't faint and collapse. Once I'm up though, my body is full of vigor.
byuu 11y ago
I have that problem, and I don't exercise at all. Happens probably once or twice a week. Almost always from going from sitting to walking too quickly. Usually, as long as I grab onto something and stay still, it passes after about 20-30 seconds of my vision blacking out and my thoughts getting all jumbled and incomprehensible. I've only fully blacked out from it once, coming to and realizing I was twitching on the floor. I've been led to believe that it's a fairly common condition, though.
todd8 11y ago
I've noticed this too back when I ran a lot. The trick I use when this starts to happen is to tense my thigh and abdominal muscles. I believe that the legs have veins designed to return blood to your core (and hopefully reach your head) when muscle contractions squeeze the veins. It seems to work for me (almost instantly).

rhaps0dy 11y ago

Do you mean that this condition is caused by endurance sports?

revelation 11y ago
Oh no, I just wanted to mention other more common faults of our poorly parameterized blood pressure PID controller.
gnoway 11y ago
The article points out that everyone will experience this at some point due to extended exertion. This girl's condition makes it happen more quickly than average.

js2 11y ago

Interesting. I've been a runner for over a decade and run 50+ miles/week. I experience light-headedness going from sitting to standing a few times a week.

WildUtah 11y ago
I bicycle 150 miles a week mostly on steep mountain roads. I seldom faint, but hopping out of bed to go take care of chores in the morning usually results in brief loss of balance and eyesight as my head loses blood pressure for a few seconds. Sometimes I have to sit down in the bedroom door frame so that I don't faint and collapse. Once I'm up though, my body is full of vigor.

byuu 11y ago

I have that problem, and I don't exercise at all. Happens probably once or twice a week. Almost always from going from sitting to walking too quickly. Usually, as long as I grab onto something and stay still, it passes after about 20-30 seconds of my vision blacking out and my thoughts getting all jumbled and incomprehensible. I've only fully blacked out from it once, coming to and realizing I was twitching on the floor. I've been led to believe that it's a fairly common condition, though.

todd8 11y ago

I've noticed this too back when I ran a lot. The trick I use when this starts to happen is to tense my thigh and abdominal muscles. I believe that the legs have veins designed to return blood to your core (and hopefully reach your head) when muscle contractions squeeze the veins. It seems to work for me (almost instantly).