Follow up heart rate paradox /lactate

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: So here I am back with some more simple thoughts about the possible connection or use of HR / lactate / Watt and so on. : As we discussed , heart rate may be or is the most common way to measure intensity. It is easy with HR watches to do this and it is very nice to have such a tool to use. : But I always try to keep in mind , that the HR is affected by many outside variables. Some of these variables we can control, however many variables including one we do not yet understand cannot be controled. e.i. Heat . cold, : altitude, dehydration, amount muscle mass involved in the motion , nutrition and much more. : So we have to keep these influences in mind when we try to use heart rate as one possible tool of intensity control. : Practical approach : We use HR mainly in training units A 1 , which are units with duration over 2 hours, to a max of 5 - 6 hours. : ( We check glucose and ammonia dynamic during this long trainings plus dehydration. : If possible you can use urea after a sets of this long A 1 trainings. : The intensity is individualiced with FACT testing therefore we keep the HR stable. This means we do not have a HR drift , because we alter intensity accordingly. So we actually have a performance drift to slower intensity over time. : The goal of our training is to stay in the FFA zone as good as possible. ( STF stress and Oxygen energy flux over a long time , Fat metabolic energy production is as you know not as effective as with glucose . It needs more oxygen , which means the stress for oxygen energy flux is actually higher in the fat metabolic path way , than in the glycolytic path way and there for perhaps more stress in that way. : Now what is true for HR is also true for Lactate. : I know that some people now will start refusing to read further. : But keep going. : Lactate testing on fixed numbers as we learn in school is perhaps not the right thing to do. : Mader' s ( the 4 and mmmol east german guy )idea that you can go out and train on a plan such as 2 and 4 mmmol / l is a good theory , but may be about the same as "220 - age for your max HR." : It is a statistic. : It is very difficult to hit a specifc lactate value during training. : The first point is, that the lactate we measure is in the system and not in the active muscle where it is produced. : The muscle in fact may be far away from your finger tip. : So in reality we don't measure the lactic acid produced in your working muscle. The lactate measuerd in your blood only gives us a clue that something has occured in the working muscle, a kind of a marker. : We do not know the amount of lactic acid produced ( which in fact is always much higher in the muscle than what we measure. Possibly 3 - 5 times more depending on research.) : We produce lactic acid constantly, but we may not always be able to proof this . The involved muscle may be able to control its lactic acid production and does not become overwhelmed by it. So if we speak from aerobic or anaerobic training , than this is only half true and as Cris mentioned in other areas , it is an overlapping with one or the other system more in charge.. : Once we can see ( measure a change in lactate values in the blood) we can at least speculate , that something is out of balance. : So I like to give you something to think. : Could it be possible , that you measure 8. 2 mmol/L lactate concentration in the blood , but the athlete still is feeling very comfortable and can go for at least another 30 - 45 min. : Or the opposite : could it be, that an athlete has to stop a workout because he is " dead" and he will tell you " I am anaerobic " , but when you take the lactate you have no clear value in the system. : Or here another question we have to ask : : If lactate concentration in the blood is increasing , what is going on in the system. : Resp. if lactate concentration is dropping what is going on now. : Do we realy understand and know all the factor. : How much Lactate do I produce ? how much can I control in the working muscle ? : How much can I metabolize already in the working muscles ? : How much is going " out " of the muscle, moving in the blood stream and into the next not " uverused " muscle close by ? : How much of this too much lactate can be picked up by other muscle fibers , who can metabolize it to energy.? : How much is the heart muscle taken out from the system ? : Is the liver involved as well ? : Are muscle like upper body muscle system able to use the lactate in the system as a energy source. : can very specific training improve the metabolization rate of lactate so I can produce more , because I can clear of better ? : Holly a lot of questions. : Now we come and tell people 2 or 4 mmol is the true value. : How about possible changes we mentioned above. Why should lactateconcentration stay stable , when so many other factor may be changing. : How about instead of using absolut numbers using trands. : If you can follow some of this thoughts , than you know what Herb and may self did over hte last 10 - 15 years. : Now if you sit down and think trough FACT test idea you may come somewhat closer to some of our ideas. : I will be back to go further into this idea and I am sure you can go trough your mind and come on the forum and challange or help us to keep going in this directions.

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