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     Juerg New member Username: Juerg Post Number: 202 Registered: 04-2006 |
This is the answer to a fathers question concerning Spiro Tiger. For all readers . I have the full physiological tests sent to me and and lot's of the info is based on the test results from the lab. It would be very interesting to discuss the interpretations as well as the way the test was conducted. But the interesting info in this case is the true O2 situation , which by the way was the only result ( besides HR ) which were physiological individual results and not " manipulated " by certain traditional theories and concepts. The 168 HR as LT is based on 4 mmol. The VT is based on a possible breakpoint , which would change by change in step length as well as the 4 mmol. The test steps are very interesting and here just the wattage steps used. 185 /200/240/350/599.. Max values where HR 185 / watt 599 ?? / VO2 Max 84.9. Max RR 71 . Max TAV 177 l . Max TV 2.9 BH 188 BW 77 age 24 Halloo Thanks for all the information. There is one information missing to help later for possible changes in the respiratory training It is the info of your Vital capacity / This is, how much air you actually can move in your lungs with one very deep breath. Similar as we look your max VO2 or your max body height or your maximal heart rate. I assume, based on the test results I got that you should have clearly a VC over 5 litre perhaps around 5.5= 6 litre. Now as all other maximal values, the VC as the VO2 max and Body height and max. Heart rate, they don’t tell us much more, than a genetically situation, with a potential for certain sports. Example: just because somebody is 7 feet tall, does not mean he is a good basketball player, but he has at least from his body height the potential to be a good basketball player. The problem now is, whether all other factors to be a good basketball player are here and can be developed. I hope you see where I am going from here. The testing is very interesting and there is as in any testing idea lot’s more questions than answers. The same with the test from your college lab. Therefor I like to limit my comment on the question I got from your father. Spiro Tiger or respiratory endurance training. Here some very basic questions you and your coach and team can try to give answers to: Assuming your VC is 5 – 6liter you use a very small fraction of your genetic potential for your performance. 30 – 50 % only. The lab considered your “lactate threshold” by 168 HR which means you would use 91 % of your maximal HR on the LT, but only 42 % of your VC (which means 2.5 litre per breath or tidal volume of 2.5 litre. VE breakpoint from your lab was by 163 or about 89 % but TV (tidal volume there was again only 41 % The True O2 TO2 was considered by 155 which by the way is the only number your lab really had a physiological value and was not based on a statistic or any other philosophical ideas and it is really true. It was by 155 HR Your TV by 155 HR was 2 litre or 33%. . Now from here on 155 and up you can see the following trends. Lactate (not lactic acid) is increasing see value as an indication of more and more integration of oxygen independent energy production. The trend of the TO2 is dropping, indicating a trend of less O2 availability. You have a slightly increase in TV up to 2.5 and 2.9 with a drop of TO2 which is an indication, that the different body Systems look for O2 to “survive” Now your body has not sport in mind but surviving. You have not a limitation of your leg muscles as a cyclist but a limitation of your vital organs like brain, heart, and lung to name the most important once. Let’s concentrate on the respiratory “surviving” concept. If you are interested in more detail (read Dempsey and metaboreflex) Here in very simple terms. As you push harder you need more energy and you create more CO2 as a result of energy production from O2. The increase of CO2 is a very potent stimulus for your respiratory system to get ride of CO2 as the fastest way of try to control the acid alkali balance. With increase of the respiratory work you need more energy (O2) in the system as well and in a certain range (intensity) the different system start to compete for the available O2, which is not limitless. So brain, heart, respiratory system and your needed extremity muscles in the specific sport you do all call for more O2. The body will try to maintain the PO2 in all organs, but has some priority in mind. The body thinks, that it may be more important to breath, than to bike and it will first try to maintain a proper, oxygen dependent energy production in the respiratory system (well as well in the heart and brain). So it will start to control over certain mechanism the blood supplies and with it the O2 supply so, that the vital organs can survive. In the respiratory situation it seems that a so called Metaboreflex (steels blood from your legs) with the vasoconstriction of your blood vessels… In case of low PO2 situation in the heart it seems that the brain reduces recruitment of extremity muscles to reduce the O2 demand in this way. (Central governor model / T. Nooks). If we now follow all your test results, so we see, that the first trend of limitation in all values is the O2 transportation per breath and the drop in TV after your “LT” but this trend of reduction in O2 supply starts actually by 155. (I am pretty sure that your so-called LBP is in that area indicating shift form clear oxygen dependent energy supply to a start of involvement of oxygen independent energy production. . You utilisation of your genetic VC is very low. If you have a VO2 max of 85 and you would use only 50 % of this genetic ability, people would say you have to work to get a better efficiency of this potential. There would be no discussion and any coach would agree that there is potential, but it is not used. Now ask yourself this question with assessing all the information concerning your respiratory system. Here some point you have to discuss with your coaches and team: Respiration rate or even a respiration rates of 40 and higher means a very fast air movement. 2.5 litre air in a: balloon “ of 6 litre means very little air in that balloon and very little pressure of air in that balloon. How is O2 moving from lung to blood? Why do we have less O2 sat in altitude? Now consider, that the space from your mouth to the gas exchange is in your lungs is called dead space, meaning it is transportation only. With your body height it may be around 400 - 500 ml. So on a TV of 2.5 it is how much % On a possible TV of 3.5 -4 litter it is how much %. Breathing 70 times means 70 muscle contractions (needing O2) versus 25 – 30 x needing how much O2? Now fast blood and air movement at the exchange area with little pressure difference means? . Fast air movements through a very narrow junction area in the lungs produces lot’s of turbulence and back pressure, which increases the PCO2 and therefor the stimulation of faster breathing. Faster breathing does not mean from a cretin moment more air movement but just more work. (As you have in RPM on a bike where there is an individual optimal RPM which is your RPM and not L. Armstrong’s RPM and so on.) Summary. A more efficient and better-trained respiratory system may change the reaction in an athlete’s body. Question. When do you breathe harder than in a TT or a test as you do do did. ? How many times where you’re working your respiratory system so long and so strong? When you look an average wattage performance in a tour stage of 280 – 340 wattage. And we would only work in this wattage area there would be lot’s more winner there. So we often train a much higher wattage than the average needed wattage by pushing high wattage in certain training’s. Do we do that with the respiratory system? Can we do it? Yes, that would be the function of the Spire Tiger, because it allows us to work above the 155-air volume and the 2.9 TV to “overload “ endurance wise the respiratory system. This thanks to a mechanism who controls the O2 and CO2 ratio in a way, which allows us to do that as long as the diaphragm is able to do that. For this we use very different training methods. . So this is the info your dad asked for and it is up to you and your coach and team to decide whether you like to invest in a Spire Tiger. Have fun and come back with more info. Juerg FaCT Canada. |