is there any science behind this lactate threshold nonsense?

Bad Wigins wrote:

S. Canaday wrote:

Again, the acidity of the tissues from a lot of prolonged anaerobic training leads to not only inhibiting aerobic enzyme function,

despite the existence of studies that say it enhances it instead. Depends on whose link you want to believe, but at the least you can't claim that's settled knowledge.

but also destabilization of the cell membranes. There are benefits of course, but frequent long-term exposure is simply unsustainable.

oh the poor cell membranes, how will they ever regenerate during the recovery periods?

You are implying that any frequency of intense interval training is overtraining in the long-term, regardless of how much recovery is taken. That's a common view among those with the habit of hitting the track hard in prep for a season, but they're deliberately pushing it to an extreme level in order to get the highest peak possible. If you're not racing, you don't have to do that.

Periodization is really a matter of tradition. Even among those who don't compete, it's not practical to hit the track consistently in bad weather, so winter is jogging and lazy recovery season.

S. Canaday wrote:

Again, you're totally caught up on semantics and missing the big picture here.

"anaerobic capacity training",...there, that a better term for you?

Daniels may say "Reps"...again, semantics....

"Intervals" can refer to (i.e. Jack Daniels usage) the hard run portion and/or the recovery period. "Vo2max intervals etc."

I'll admit...you're right on the blood PH. I must've referenced muscle PH.

If you want to talk about "sprinting" I'd say "alactic spadework." You've got 8-10 secs at 100% from ATP's sitting around and then Creatine Phosphate.

oh please... wrote:

The normal blood pH is tightly regulated between 7.35 and 7.45. Below 7 you're gonna die.

Muscle pH goes down to below 6.5.

And what the heck is anaerobic intervals?

Sage, anerobic running is sprinting. What you and others who don't know basic physiology call "anaerobic interval" is neither anerobic, nor an interval, which is the recovery phase. The word interval here means time between efforts.

How can so called VO2max training be anaerobic?

oh please... wrote:

S. Canaday wrote:

The drop in blood PH inhibits aerobic enzyme function. Perhaps I shouldn't have said the word "destroyed" but again, the hydrogen ions create an "inactive" environment for these enzymes.

To get back to the main purpose of this thread: (LT).

I believe that LT/Tempo sessions and the less intense (but longer in duration) "Uptempo" sessions can be used nearly year-around in training. Whereas the more intense (Vo2max intervals and shorter/faster "Reps" with controlled recovery aka Anaerobic Capacity or Lactate Tolerance or HIIT) sessions need to be used strategically in a periodized manner (and with care) to avoid "eroding" one's hard-earned "aerobic base." That is the value of LT.

You're spouting the usual pseudoscience. What the heck does "eroding" one's hard earned "aerobic base" mean? You can tire yourself out doing too much of any training, slow or fast. Yes a good balance is needed. But what is the purpose of any training session? Forget about trying to explain everything in metabolic terms because that is just nonsense. Running is a skill. And skills adaptions should be foremost in every runners mind before, and during every run.