fishermba2004
05-11-09, 09:07 PM
Does anyone else experience orthostatic hypotension lasting for 1-2 days after a long ride? If so, do you take it as an indication that you were riding too hard?
thanks.
thanks.
Long Distance Competition/Ultracycling, Randonneuring and Endurance Cycling - orthostatic hypotension
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Six jours
05-11-09, 09:24 PM
When I am in shape I experience it on an ongoing basis, as did/do many other racers. When your resting heart rate and blood pressure are extremely low it is unavoidable. With a HR of 40 and a diastolic pressure of 70, standing up quickly means it's going to take a moment for your system to catch up. So you get used to getting out of bed, standing up, etc. slowly.
Beyond that, however, I am sure you will get a litany of responses to the effect of not seeking medical advice from a bunch of strangers on the internet, and I concur with it.
HTH!
Beyond that, however, I am sure you will get a litany of responses to the effect of not seeking medical advice from a bunch of strangers on the internet, and I concur with it.
HTH!
Bacciagalupe
05-11-09, 10:13 PM
If you are having dizzy spells for 1-2 days, you should see a doctor regardless of the suspected cause.
Hopefully it will be nothing to worry about, but that kind of duration, I'd want to get it checked out.
Hopefully it will be nothing to worry about, but that kind of duration, I'd want to get it checked out.
merlin55
05-11-09, 10:56 PM
Dehydration can contribute to hypotension, perhaps that would explain why you feel better after a day or two, after you replace the loss of fluids. You should try and limit your pre to post ride water weight loss to perhaps 1%.
Richard Cranium
05-12-09, 08:47 AM
That's an interesting phenomenon. I don't know if there is research supporting a distinct nature of "orthostatic" hypo-tension as opposed to general or situational hypo-tension.
In other words, you want to assume hydration, and or blood volume levels are some how factors in hypo-tension - but what factors make for "lightheaded" symptons?
I have what is known as "labile" hypertnesion -meaning - very changable. After long rides and some workouts I have very low blood volumes {pressures** - yet very seldom get dizzy.
Whatever its cause, it must be something related to the nature of the bloode vessels in the brain. Because - at least in my case - low systemic pressures won't trigger dizziness in me.
I wonder if blood viscosity has anything to do with it - serum levels or factors related to flow?
In other words, you want to assume hydration, and or blood volume levels are some how factors in hypo-tension - but what factors make for "lightheaded" symptons?
I have what is known as "labile" hypertnesion -meaning - very changable. After long rides and some workouts I have very low blood volumes {pressures** - yet very seldom get dizzy.
Whatever its cause, it must be something related to the nature of the bloode vessels in the brain. Because - at least in my case - low systemic pressures won't trigger dizziness in me.
I wonder if blood viscosity has anything to do with it - serum levels or factors related to flow?