Lactate Threshold vs VO2 max

I stopped reading as soon as you said Ben Greenfield.

He is a hack. Get a new source.

please don't buy his energy bracelets or mouth pieces.

I think that Dave Ryan's description here- is pretty clear:

http://forum.slowtwitch.com/forum/Slowtwitch_Forums_C1/Triathlon_Forum_F1/Vo2_max_vs_lactate_threshold_P4158245/

Practically- VO2 Max is your maximum oxygen utilization rate, and usually sustainable for 3 to 6 minutes. 

LT is the level you can sustain for quite a bit longer. ~ an hour.

VO2max is interesting to know as a measure of physical fitness. However LT is the more useful piece of knowledge for training.

The best way to find your LT for a given sport is in a lab. This way you will not be a few beats out, which can make a big difference if your aim is to train just above or just below.

Plus LT can change as you train ... so it is worth having it tested 2 or 3 times in a season as you move through your training phases 

Exhibit A: http://www./2012/08/do-power-bracelets-really-work/

Exhibit B: https://www.youtube.com/watch?v=T2yK_jqy4aU

Exhibit C:http://204.187.14.165/forum/Slowtwitch_Forums_C1/Triathlon_Forum_F1/Ben_Greenfields_Magic_Bracelets!!!_P4220966

X

I'd recommend Matt Fitzgerald's stuff over Greenfield any day of the week.  

For me- I never find out what I can do until race day.  There's something about seeing the first place guy in my age group, 20 feet in front of me, that get's me to find out my LT.   

Seriously, if you don't want to waste your time, avoid greenfield.

I too stopped reading.  Clearly Ben Greenfield's goal in life is maximizing revenue to Ben Greenfield.  Look at the gear he sells: http://greenfieldfitnesssystems.com/product-category/gear/

Normal triathlon gear, some off the beaten path "you don't need that junk" stuff, and then flat out mumbo jumbo science stuff such as the energy bracelet: http://greenfieldfitnesssystems.com/product/superhuman-performance-bracelet/

The Superhuman Performance Bracelet is the world’s first wristband specifically designed to increase your physical performance, decrease damage from electrical pollution, and enhance sleep – all by harnessing piezeolectricity via a built-in “Encoder” – which vibrates at specific frequencies so tiny that you cannot feel the vibration, but still experience all the benefits.

What’s the difference between the Superhuman Performance Bracelet and other wristbands, necklaces, medallions or other devices? The other products – from bracelets to necklaces to wristband – are either hologram or magnet based. But the Encoder is different. It is the first and only device to have adapted piezoelectric technology. The disc inside the Encoder itself is the culmination of complex biosonic repatterning via sonic neurotechnology – which (translated) is the precise mechanical manipulation of soundwaves to cause the disc to vibrate, which brings about your desired changes in your physical and mental performance – including balance, better thinking, enhanced sleep, and much more.

Click here to read the complete story of how Ben Greenfield discovered the science behind the Encoder and then designed the technology in this wristband.

If you can't tell this is quackery, then click the link at the bottom and read it.  If you still don't think it's quackery, then you desperately need a better quack detector. 

As others said, that's the problem with Ben Greenfield. He mixes in rock solid advice with dubious advice with shameless quackery. I've got better things to do than try to sift real information from bogus information.

Yeah he's great and you'll learn so much!!!

the ben greenfield center for kids who don't run good, and wanna learn to do other stuff good too.

x2 (or 3 or 4?)

IMO, an intelligent guy, but a total snake oil salesman.  I also feel the apparent complete lack of integrity in selling anything no matter how obviously bogus it is is unethical.  I have no respect for the guy.