| Author | Message | ||
     Cuylar New member Username: Cuylar Post Number: 1 Registered: 11-2012 |
I came across a very interesting article a couple months ago published in the British Journal of Sports Medicine. Br J Sports Med 2012;46:23-29 http://bjsportmed.com/content/46/1/23.ab stract http://bjsportmed.com/content/46/1/23.fu ll The article describes a method for VO2max testing using a descending step protocol. The authors go on to report the surprising finding that the descending protocol produces significantly higher O2 consumption even at a lower intensity than that of the standard ascending protocol. Now, I understand that maxVO2 is only one of many physical descriptors. And that tests to exhaustion have certain obvious limitations. The authors present the argument that there is a mental advantage to knowing that a descending test will get easier and thus gives an advantage to the athlete to push harder and consume more oxygen. I cannot help but think there may be some more going on here. Is this revealing only limitations of testing protocol? Or perhaps can we gain gain perspective on the physiological limiters of the athlete? During the inclining test, do the muscles compensate for the lungs/heart and then fail before the maximum work can be achieved by the cardiovascular system? Perhaps the lungs/heart cannot achieve maximum stress unless required to continue performance while simultaneously recovering from the initial anaerobic stress of the declining protocol? I would very much enjoy Juerg's perspective on what may be happening at a physiological level to induce the greater O2 consumption despite lower performance output(velocity). Thank you Cuylar Conly | ||
| Juerg Moderator Username: Juerg Post Number: 3582 Registered: 03-2006 |
Dear Mr. Cuylar . Thanks for the post . I am familiar with this study and in short : It surprising to me the summary of the conclusion they had. 2. I am surprised they thought that this is new. Since over 20 years we see and produced this information, When you did or do a short version of my old obsolete lactate balance point testing , than you had the same information with exactly the same question at the end. This information produced our new view on how to test for limiter and compensator with the IPAHD protocol , now used in some centers in Canada and europe. If you give me your email I can sent you some very interesting pictures and information, who simply and straight forward explain you why this happens. The information is far to comprehensive to post it here. As this group looks still just at an overall VO2 use instead of a specific O2 use of different system individually they therefor still have the open questions they refer in their conclusion. What was a short version LBP test. In the field mostly used. a) you go 3 min easy to get ready followed by 5 - 8 min all out. and than you start basically a step test somewhat similar like they did. We even had once a rower on here who suggested a reverse LBP by doing exactly what they did and this was about 5 years ago, Same problem if you look VO2 and lactate only as we have to look some much more important reactions with physio flow, NIRS and respiratory assessments during the test. The answer really can be found, when looking at Hans Selyes information he combined with the great ideas of Cannon and you have the answer right there in front of our eyes.. Now you combined modern technology of noninvasive life cardiac information, combine it with live respiratory information , gas information and oxygenation information and add once in a while a metbolic biomarker in the form of lactate testing and or blood glucose testing and if you like even ammonia testing at the end of the hard section and you see, why we have the result they nicely demonstrate. So email me and I will give you facts versus words. Juerg | ||
| Cuylar New member Username: Cuylar Post Number: 2 Registered: 11-2012 |
Juerg, correspondence to, sapiensfuturus >at<gmail>dot< com thanks | ||
| Juerg Moderator Username: Juerg Post Number: 3583 Registered: 03-2006 |
Thansk for teh huge numbers of e mails this post created. Yes I will try to give you teh answers on here, as it is simply impossible for me to answer all teh great feedbacks and ideas I got sent. So please be patient and I will try to put a series of answers and ideas together for all teh great responders. Cheers Juerg |