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TT's at Altitude

Old 02-07-07, 08:22 PM
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domestique
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TT's at Altitude

After reading a couple recent threads about TT and especially how different altitudes effect average speed; I decided to do a quick google search and came across this website:

http://www.wolfgang-menn.de/altitude.htm

Basically the best altitude for less drag but with minimal VO2 max loss is around 3000-3500M.

It's pretty crazy to think that Boardman set the record at SEA LEVEL, where as if he had done it in Mexico (2230M) or Bolivia (3400M) he could have gone an extra 3-5 km/hr.

Merckx
Mexico City, 25.10.1972 49.431km (at altitude)

Boardman
Manchester, 27.10.2000 49.441 (at Sea Level)
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Old 02-07-07, 08:30 PM
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On a related note, what is the best way to deal with going from sea level up to ~4000' for a TT?

Go up the night before? acclimate a week ahead of time or what?
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Old 02-07-07, 08:34 PM
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How long is the TT? I remebering reading an article on Olympic Track events where for sprints you can go the night before and should be fine but for the long distance runners they suggested going up 1-3 weeks earlier to get acclimized.
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Old 02-07-07, 08:42 PM
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Originally Posted by domestique
How long is the TT? I remebering reading an article on Olympic Track events where for sprints you can go the night before and should be fine but for the long distance runners they suggested going up 1-3 weeks earlier to get acclimized.
40k TT I think
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Old 02-07-07, 09:49 PM
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I've been told that for endurance events, you should either get there as late as possible or give a full 2+ weeks. Anything in between is detrimental.

This was just an offhand comment from some guy at the olympic training center, I'm not sure why or if this is completly true.
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Old 02-07-07, 10:18 PM
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Hey: Come out and do our ACA sanctioned TT at 8800 ft elevation and find out for yourself. Dead Dog Classic Stage Race 23-24 June Laramie, Wyoming. By the way you can also do our RR which tops out at 10,800 ft. Crit is at 7200 ft.
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Old 02-07-07, 10:22 PM
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Originally Posted by VosBike
I've been told that for endurance events, you should either get there as late as possible or give a full 2+ weeks. Anything in between is detrimental.
+1
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Old 02-08-07, 07:44 AM
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Originally Posted by domestique
How long is the TT? I remebering reading an article on Olympic Track events where for sprints you can go the night before and should be fine but for the long distance runners they suggested going up 1-3 weeks earlier to get acclimized.
This is interesting. Last year at Ft Davis (7500ft) we got out there two days before the event. On Friday we pre-rode the course. My teammate and I were going pretty easy but our HR and breathing were very labored. During the race things weren't bad at all, and my performance was pretty strong. I had planned on making a vacation out of it this year and go out a week early. But if this is true then it might not help or even hurt.
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Old 02-08-07, 08:03 AM
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Originally Posted by VosBike
I've been told that for endurance events, you should either get there as late as possible or give a full 2+ weeks. Anything in between is detrimental.

This was just an offhand comment from some guy at the olympic training center, I'm not sure why or if this is completly true.
I was doing a little research to plan my trip for Everest Challenge. There is some data to support that approach. The idea being less than a week or two and you're not getting much acclimitization benefit, and by getting to altitude less than 24 hours before, you avoid the onset of some altitude problems.

I think there's still debate though on whether 2-3 days at altitude is better than the less than 24 hour approach.
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Old 02-08-07, 08:12 AM
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From what I remember during my mountaineering days...

Above 7,000 feet, your body can handle around 1-2,000 feet of vertical gain per day. Above 14,000 feet, it takes around 3 days for the same.....provided you've acclimatized properly up to that point and are very well hydrated. Keep in mind this is just to get acclimatized well enough so that you can continue on and not get sick or die. The biggest change in air pressure happens between sea level and 5,000 feet. It also depends on the person as well....some people need more time than others.

All it takes is actually reaching a certain altitude, and then coming back down; you don't need to spend huge amounts of time there, just hit it. This is why big mountain climbers will haul gear a few thousand feet up, build a cache and store it, then climb back down to camp and sleep there. Cyclists could get the same benefit by climbing in the mountains, and then coming back down and sleeping (if they're not normally from a mountaineous area, but have acclimatized up to their current altitude).
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