What pace is considered "anaerobic"

The pace where your breathing is heavy and your legs start burning and you will not be able to keep it up for more than 30-60 seconds.

Ososk wrote:

The pace where your breathing is heavy and your legs start burning and you will not be able to keep it up for more than 30-60 seconds.

Anaerobic means "without oxygen." Swinging a baseball bat is anaerobic, for example. If you are breathing heavy and are unable to keep it up for long, you are using oxygen and lots of it (in fact, a person in this state would wish for more). This is aerobic.

This is not consistent with conventional wisdom. Instead, read this link:http://www.wisegeekhealth.com/what-is-an-anaerobic-threshold.htm

Ososk wrote:

The pace where your breathing is heavy and your legs start burning and you will not be able to keep it up for more than 30-60 seconds.

Even better discussion in context of running:

http://www.rice.edu/~jenky/sports/anaerobic.threshold.html

So the answer is...only sprinting is entirely anaerobic?

But training at a pace below your LT or AT (same thing?) helps you become more "aerobic" at faster paces and improves lactate clearance?

That has always been my take. Given that most of my exercise physiology comes from reading Daniels, that is not surprising.

This is why tempo runs and cruise intervals are vital to distance running.

sub 50 at 400. Try it and see for yourself. Muahaha!

You are always producing energy by both aerobic and anaerobic means. So if your question is "at what pace is energy production more than 50% anaerobic" your answer depends on which research you look at. Depending on the research....between 400-800m pace is where the anaerobic energy pathways take over 50%.

Alan

LT (lactate threshold) is roughly 25 seconds slower than your 5K pace per mile. That is, if your 5K pace is 6:30/mile, your LT would be about 6:55. Faster than 6:55 would be anaerobic. Of course, this is an "about" number, but it's based on the Daniels' Formula.

totally incorrect wrote:

Ososk wrote:

The pace where your breathing is heavy and your legs start burning and you will not be able to keep it up for more than 30-60 seconds.

Anaerobic means "without oxygen." Swinging a baseball bat is anaerobic, for example. If you are breathing heavy and are unable to keep it up for long, you are using oxygen and lots of it (in fact, a person in this state would wish for more). This is aerobic.

False. Aerobic means that your aerobic metabolism is able to provide most or all of the energy. Anaerobic means that your anearobic metabolism is providing most or all of the energy. I don't think you understand breathing's role in this.

Aerobic and Anaerobic are too simplistic and faulty terms.

It would be better to use terms such as phosphagen system, glycolysis, oxidative phosphorylation and beta oxidation.

Alan