Talk to me, Babe
I like to think of this blog as a medical consultation. No appointment necessary, no white coat, and the opportunity to explore issues related to the run and your health.
If you hit this, read this, please comment! I want keep it up and ‘running’.
I was fishing through an old blog and found a great question that I never responded to.
It was written on 6/26/07. Isn’t that two days after the race? So, I would like to address this question now, and ask that you also go back to read the blog on altitude sickness.
Marti said “I have always heard that if you can’t get there several weeks ahead to acclimate, that you should run your race within 3 days of arrival. Can you say more about your recommendation?”
There is an INITIAL acclimatization to altitude and there is the LONGER TERM acclimatization that occurs over weeks. Again let me say that the initial response to altitude is based on rate of assent, absolute altitude and individual predisposition. The physiologic response is very complex. In the initial response, ventilation increases in response to hypoxia. This blows off the carbon dioxide and results in an alkalosis. Then the kidneys kick in to correct the alkalosis by excreting bicarbonate. This happens in the first 24-48 hours. There is a 12% reduction in plasma volume in the first 24 hours (your peeing it off) and the heart rate and the blood pressure go up. Also, the pulmonary artery pressure goes up. The blood flow to the brain increases and returns to normal in 3-5 days. The long term acclimation over weeks is the development of an increased red blood cell mass and improved exercise tolerance.
Arrival the day before the event is adequate, although AMS may be a problem. The headache is an unpleasant symptom and accompanied by nausea, fatigue and sluggishness, …. NOT my ideal way to start a major race. The symptoms of AMS have been described as feeling like a hang over.
The WS race peaks at just under 9000 feet, but if I was one of the 20% of persons who will get AMS, I would opt to stay in Tahoe for 3 days prior to the race, before I climb an additional 2500 feet.
Hope you’re out there Marti and I hope I answered your question.
Left, right, left, right,
Linda Lee
If you hit this, read this, please comment! I want keep it up and ‘running’.
I was fishing through an old blog and found a great question that I never responded to.
It was written on 6/26/07. Isn’t that two days after the race? So, I would like to address this question now, and ask that you also go back to read the blog on altitude sickness.
Marti said “I have always heard that if you can’t get there several weeks ahead to acclimate, that you should run your race within 3 days of arrival. Can you say more about your recommendation?”
There is an INITIAL acclimatization to altitude and there is the LONGER TERM acclimatization that occurs over weeks. Again let me say that the initial response to altitude is based on rate of assent, absolute altitude and individual predisposition. The physiologic response is very complex. In the initial response, ventilation increases in response to hypoxia. This blows off the carbon dioxide and results in an alkalosis. Then the kidneys kick in to correct the alkalosis by excreting bicarbonate. This happens in the first 24-48 hours. There is a 12% reduction in plasma volume in the first 24 hours (your peeing it off) and the heart rate and the blood pressure go up. Also, the pulmonary artery pressure goes up. The blood flow to the brain increases and returns to normal in 3-5 days. The long term acclimation over weeks is the development of an increased red blood cell mass and improved exercise tolerance.
Arrival the day before the event is adequate, although AMS may be a problem. The headache is an unpleasant symptom and accompanied by nausea, fatigue and sluggishness, …. NOT my ideal way to start a major race. The symptoms of AMS have been described as feeling like a hang over.
The WS race peaks at just under 9000 feet, but if I was one of the 20% of persons who will get AMS, I would opt to stay in Tahoe for 3 days prior to the race, before I climb an additional 2500 feet.
Hope you’re out there Marti and I hope I answered your question.
Left, right, left, right,
Linda Lee
