Training with Chapman - lactate : Speakers & Interviews

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#12	AT King November 9 at 9:35pm Regardless of nomenclature, the message Coach Chapman is trying to convey is that a LT test is meant to approximate where anaerobic threshold occurs. AT is properly defined as the intensity at which energy production can no longer be accounted for by purely aerobic processes. Lactate is a fuel that can be shuttled around the body, taken up by organs such as the heart and liver, and oxidized to produce more ATP. This is still an aerobic process, because these organs are ultimately using oxygen to create ATP, regardless of whether the initial catabolic reaction was through glycolysis (an anaerobic process). By graphing lactate as a function of intensity, and identifying a clear disproportionate increase in La production, we are "assuming" this to be the anaerobic threshold. Which is a more time efficient test than a MLSS test. That is why Chapman's test is useful.....And creating training intensities based off of those results is highly useful!! reply
#11	Camille October 9 at 2:37pm For the person asking for practical ways to learn your lactate threshold, it's going to be around 85-90% of max heart rate for most runners, and 90-92% for elites. Marathon pace is going to be just below lactate threshold (85-90% for most well-trained runners). The key is knowing your max heart rate, which you can find out from any number of tests (~intervals on a steep hill; going all-out/maxing after several repeats). Personally, I have a Garmin with a HRM and foot pod. I will do progression runs (30 min.-1hr.) starting at 80% of max HR and getting up to 90%. I'm comfortable with this effort, so I know my lactate threshold is >90%. Once I get a sense for this effort and get closer to a marathon, I start doing the progression runs without the HRM. You can get a real sense for your body and what it can handle, if you work a little with a HRM. reply
#10	Charles Kutz October 7 at 9:43pm I agree with PhD, it is a common misconception that lactate causes fatigue in muscle. When pyruvate is converted into lactate it actually buffers a hydrogen ion and does not contribute to acidosis in the muscles at all. So measuring lactate threshold in a lab is not helpful in coming up with a training plan. Measuring blood pH threshold would actually be more beneficial in designing a training program. reply
#9	Owen Anderson October 7 at 2:05pm I would disagree that the optimal intensity for improving lactate-threshold speed is a narrow range right around current lt velocity. Bear in mind that lt speed is actually fairly slow - right around 15-K race pace for many runners, and the research actually indicates that higher intensities (for example, 1500-meter, 3-K, and 5-K speeds) are superior for lifting lt. This is probably because muscle cells have receptors on their membranes for latching on to lactate (setting the stage for bringing lactate into the cells). To get muscle fibers to increase their lactate-receptor production, you probably need to give them a strong stimulus, with lots of lactate in the blood (and possibly markedly inadequate break-down rate of lactate inside the cells to meet the demands of the chosen pace). -Owen (http://www.educatedrunner.com) reply
#8	Anthony Colotti October 6 at 6:22pm His term for the lactate threshold is different than a lot of other peoples; the term for the point at which lactate production equals removal is usually called the Max Lactate Steady State (MLSS). The Lactate threshold is typically in reference to the initial onset of lactate accumulation above resting levels. Not a difference when it comes to training though I would think. reply
#7	Hey October 6 at 5:50am @Dude at least flo track has videos with him. Who cares if it was from a visit a while back. I'd rather watch clips than a 34 min interview all at once. reply
#6	Dude October 5 at 11:12pm When was this footage actually taken as the office and his clothing look exactly the same as in the footage taken in 2008 reply
#5	Cox October 5 at 10:20pm LT pace generally is in between your steady run pace and tempo run pace....your pulse should never be over 160 after a rep; if it is youre going to hard. reply
#4	Need Practical Knowledge October 5 at 8:41pm Considering that most of us don't have access to LT testing, it would be useful to hear of practical ways to learn your LT pace. His explanation is nothing that you couldn't find on a myriad of other websites. reply
#3	Jason October 5 at 6:08pm To PhD. You do not know what causes fatigue. No one knows exactly what causes fatigue. It's up for debate. But, the lactate threshold (something that is easily measureable in the lab) corresponds very well with the onset of fatigue. That's why this is useful. Chapman made no comments on what causes fatigue. The theory is that the presence of hydrogen ions (not bonds, like you said), most of which originate from lactic acid production, is what causes the fatigue. BUT some people even debate that, claiming that there are other sources of fatigue. We could argue til we're black and blue in the face but it all comes down to the fact that no one really knows for sure. So - don't claim that you know for sure what the cause of fatigue is. Because you don't, I don't, no one does. reply
#2	Anonymous Coward October 5 at 4:23pm PHd said: “lactic acid does not cause fatigue! ive been hearing it all my life....its the hydrogen bonds that cause the fatigue, when the hydrogen bonds ability to to bind to the substrate is at a rate that it cannot keep up with, the inability for the hydrogen to bond causes the fatigue....not latic acid” biology 101! reply
#1	PHd October 5 at 3:48pm lactic acid does not cause fatigue! ive been hearing it all my life....its the hydrogen bonds that cause the fatigue, when the hydrogen bonds ability to to bind to the substrate is at a rate that it cannot keep up with, the inability for the hydrogen to bond causes the fatigue....not latic acid reply

Robert Chapman

Training with Chapman - lactate

October 5, 2009

Team Indiana Elite Coach Robert Chapman briefly talks with us about lactate threshold training. He talks about what lactate threshold is and ways Team Indiana Elite uses it in their training.

About Robert Chapman

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Team Indiana Elite

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Robert Chapman's propensity for understanding the chemistry of successful training is something that he brings to his coaching style. While Chapman was at Indiana University the Hoosiers achieved NCAA…
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Related Pages
- Bio: About Robert Chapman
- Coverage: 2009 XC Coach's Interviews

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