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I've done a few long endurance events, though never at elite level. That article left me confused. Aren't most people doing ultra endurance sports performing w
by feral 13y ago
I've done a few long endurance events, though never at elite level. That article left me confused.
Aren't most people doing ultra endurance sports performing well below their lactate threshold?
As such, its not our lactate threshold that tends to stop us 'going forever'. Once our LT is above a certain point, our limiting factor will something else, such as muscle endurance.
If his unique feature is that he doesn't have a lactate threshold, wouldn't that mean he'd be an ideal sprinter, or middle distance, because he'd be able to go all-out without cramping, rather than an ideal endurance athlete?
- bluedino 13y ago>> If his unique feature is that he doesn't have a lactate threshold, wouldn't that mean he'd be an ideal sprinter They never said he was fast
- daleharvey 13y agoIf you can sprint slowly for 1600m, you will do pretty well.
- recursive 13y ago"sprint slowly" I must not understand what sprinting is.
- jessedhillon 13y agoNo. You will lose the 100m, 200m and 400m events, and then you will keep running for another 1000m+ for no reason.
- runamok 13y agoI think that is nonsense because everyone has a Lactate Threshold. His may just be at a faster pace then most ultra runners. Regarding your last comment: Anything under approximately 10 mile race pace is under your lactate threshold pace (LT). http://en.wikipedia.org/wiki/Lactate_threshold http://en.wikipedia.org/wiki/Lactate_threshold LT pace means you are in a steady state. The lactate your are creating is being eliminated at the same rate. The further beneath that pace you go the shorter you will be able to maintain it. I would describe going well under LT pace as a feeling of "heaviness" in your legs as lactic acid builds up in your blood stream. From: http://en.wikipedia.org/wiki/Sprint_(running) http://en.wikipedia.org/wiki/Sprint_(running) Human physiology dictates that a runner's near-top speed cannot be maintained for more than 30–35 seconds due to the accumulation of lactic acid in muscles.[4]
- nswanberg 13y agoThe article's description of lacate threshold ("[the point where] your body is no longer able to convert the lactate as rapidly as it is being produced") would be the one I'd use but it doesn't square with the test, which appears to be measuring the point where he begins to rely on the anerobic system. It makes sense that they would want to test for that, since Karnazes isn't particularly fast, but he can run quite a long time, so testing where his anerobic system begins would be more interesting. If they'd wanted to find the point where Karnazes' body could no longer clear the lactate it was producing, they'd be able to find it. They mention testing his aerobic capacity, but I think they are referring to his maximal aerobic capacity (VO2-max).