Training & Nutrition - Lactic acid not the culprit?

I heard an npr news story today about how lactic acid is actually not the culprit that causes your muscles to stop working, but may actually be the body's way of helping. I'm an avid rider, but no racer or anything, so it really doesn't mean squat and won't affect my workouts or diet, but it's still interesting. Here's a couple links.

http://www.npr.org/features/feature.php?wfId=3861103
http://www.abc.net.au/science/news/stories/s1180597.htm

Hrm, npr appears to have yanked the story.

I never thought of latic acid as a bad thing. It hurts like hell but doesn't it take the place of oxygen when your lungs cant processes it as fast as your working? I'm pretty sure thats how it works, but then again I'm not a coach or anything. Maybe Koffee or Ric will chime in.

Thanks for the info.

Cheers

hmmm

Lactic acid injections anyone?
:)

From the seminars I've attened, they've been saying that lactic acid is a good thing- that the excess lactic acid that builds up from exercise is actually used to enter the Krebs Cycle to produce more ATP to do more work.

This doesn't mean that you should go as hard as you can every single time- there still is a method to the madness to get optimum benefits of lactic acid buildup.

Koffee

not sure if you've seen it or not koffee, but here's a krebs cycle link
http://www.people.virginia.edu/~rjh9u/krebs.html

and here too! http://www.jonmaber.demon.co.uk/tcasteps/

I've seen it.

But the presence of oxygen and lactate forms pyruvate, correct? And the pyruvate enters the Krebs cycle, which is what I was asserting earlier.

Koffee

p112- McArdle, Katch and Katch (1991)
p530- Astrand and Rodahl (1986)

great books on exercise physiology
off for food now!

Thanks, but I've got books and lecture notes, circa 2003.

Koffee

well read 'em then ;-)

It still irks me when I read current articles that suggest that lactic acid production is the main cause of DOMS (delayed onest muscle soreness).

well read 'em then ;-)


Already have, but thanks for the old school links. ;)

Koffee

cant go wrong with those two books. they're the best!

I enjoy Marieb myself...

Koffee

do you mean these http://www.aw-bc.com/marieb/
i've never seen them before.

ric

Oh yeah- that's the ticket.

Elaine is da bomb... her books are used all over the college circuit (and even in Australia when I was there studying for a year). She's def.

Koffee

She's def.

Koffee

what is "def"? is that something to do with being hearing impaired or something else?

def= dope= da bomb= pretty damn good.

Dood, do you sleep, or are you Vampiria or something? :D ;)

Koffee

def= dope= da bomb= pretty damn good.

Dood, do you sleep, or are you Vampiria or something? :D ;)

Koffee

i haven't slept in 20 years

Hope you're single!

:D ;)

Koff

Apparently the result of very recent research involving single strands of frog muscles. My take is that it is good raw data, but it'll still be a while 'til it yields useful training information. Actually, there was one thing... they mentioned that since lactic acid slows the potassium depletion (and thus muscle fatigue), taking bicarbonate as a training aid to help neutralize the lactic acid (there was a thread on this a couple months ago) might be counter-productive.

Hope you're single!

:D ;)

Koff

sorry Koffee, i'm already taken, see http://www.cyclingnews.com/news.php?id=news/2003/sep03/sep23news

Here is another great article ... http://www.nynewsday.com/news/health/ny-hsmouse0824,0,7562101,print.story?coll=ny-

From article:
California scientists have genetically engineered an animal that has more muscle, less fat and more physical endurance than their littermates. The mice go twice as far as expected. They also seem protected against the inevitable weight gain that follows a high fat, high calorie diet.

Good God, sign me up as a human test subject!!

sorry Koffee, i'm already taken, see http://www.cyclingnews.com/news.php?id=news/2003/sep03/sep23news

Whoa! I wasn't implying THAT! I was implying that being up all the time may be annoying to the sig. other... with you online all night, I'm sure there'd be some suspicion ("honey, who are you talking to all night online" *in falsetto, annoying voice*).

Don't you worry- I'm not interested. ;) :D

Koffee

Whoa! I wasn't implying THAT! I was implying that being up all the time may be annoying to the sig. other... with you online all night, I'm sure there'd be some suspicion ("honey, who are you talking to all night online" *in falsetto, annoying voice*).

Don't you worry- I'm not interested. ;) :D

Koffee

i know you weren't implying that, it was just funny though!

No it wasn't!

:D

Koffee

No it wasn't!

:D

Koffee

are you jealous cos i ain't single :p :D

No, I'm actually glad I'm single... :p

Koffee

No, I'm actually glad I'm single... :p

Koffee

i'm glad i'm married :)

I'm glad you're married too... seems like we get lots of your attention, tho! :D :p

Koffee

can koffee and ric get a room?

Well, only if you join in! :D Don't be silly, boyfriend! You know you're the only one for me! (at least for tonight! :p )

Koffee

Well, only if you join in! :D Don't be silly, boyfriend! You know you're the only one for me! (at least for tonight! :p )

Koffee

:eek:

Perhaps Koffee is living proof that regular exercise does increase testosterone levels? ;)