# Training & Nutrition - LT test

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View Full Version : LT test

irish pat
01-18-09, 09:49 AM
I want to find my LT zone using my power meter, I did it last year with my coach, but can't recall exactly what we did. I read the sticky above, but the link to the heartzone site is not working. I have searched the forums but can't find one that works with power as well as heart rate, thanks for the help.

asgelle
01-18-09, 02:38 PM

pecos
01-23-09, 04:19 PM
Power output at LT is the amount of watts you can churn out at LT, which is the higuest point of exertion that an athlete can endure w/o invoking the anaerobic energy system.

Quickest and simplest way to find out your LT is to warm-up for 10-15 minutes at 65% of MHR, then do a couple of intervals at max for 1', with 1' recovery, then go for a 30' time trial (key being starting slow and reaching a pace you can sustain for the whole duration of the interval).

After you are done, look at your average HR for the last 20' of that 30' interval, should be a very good approx. of your LT.

I'm sure others will chime in with different ways but that's what I do and seems to coincide with what a lot of coaches are doing.

If you are interested in something more power-specific, like FPT (Functional Power Treshold) then I'd recommend buying the book "Training and Racing with a Power Meter" by Hunter Allen and Andrew Coggan, excellent stuff, the next level of training a beginner / intermediate cyclist can take.

asgelle
01-23-09, 06:13 PM
Power output at LT is the amount of watts you can churn out at LT, which is the higuest point of exertion that an athlete can endure w/o invoking the anaerobic energy system.

Anaerobic metabolism is not not like an electric light that is off and then turned on by a switch. Energy is produced through the anaerobic system even at very low intensities.

nafun
01-23-09, 08:21 PM
For FTP (what you probably want if you use a power meter), try this link. See pages 5-6.
http://www.peakscoachinggroup.com/Archivedarticles/Power_Training_Chapter.pdf

Bottom line:
FTP is approximately 0.93 times average power over 20km TT.