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Tell me more about lactate threshold...(2 posts)

Tell me more about lactate threshold...BowWow
Oct 25, 2003 8:26 PM
I think I know what it is - the point where you can't process/flush lactic acid from your muscles faster than it is created, thereby causing a buildup of lactic acid in your muscles. Right? Too simple? Way off base?

And I think I know how it feels - that burning in your thighs as you push yourself to stand up just a little further up that hill, that burning in your hams as you spin 115 rpm for just 10 more seconds. On track? Somebody have a better explanation that'll help me identify it?

Now to the crux of the question. How the heck do you measure it? Heartbeats per minute? Or is it more complicated than that? I'd really like to increase my endurance and speed my recovery. Is increasing my LT the way to accomplish these goals?

Sorry for all the questions - and I hope it's OK to post this on this board...

yes, it's the burnbimini
Oct 26, 2003 6:55 AM
Heart rate and LT are not dirrectly connected but HR can be used as and indication of when you are approaching lactic threshold.

A rule of thumb way to determine the heart rate where LT starts (without blood testing) is to monitor your heart rate when you are 30+ minutes into a maximum effort ride where you are working at constanct power output such as a 40K TT. It will be lower than your peak HR that you would see during a short term effort such as a sprint.

Training at a heart rate just under the LT for 10+ minute periods can help raise your LT, thus improve your speeds in TTs and endurance in road races. I assume it can help in recovery, but higher intensity shorter term intervals may do more good developing recovery, hill climbing and sprinting ability.