Posted by Juerg (207.194.220.194) on November 08, 2003 at 14:58:17:
In Reply to: Some thoughts on Mr. Shorter... posted by DanZ on November 08, 2003 at 12:56:23:
Hi Dan ,
here some info to shorten your reading :
Muscle mettabolic factores decisive for marathon running
Author Dr. J Helge , Dr. G. van Hall and Prof . B. Saltin. (Copenhagen muscle research centre denmark )
Quota "
His ( Shorters ) advantages were a good running economy , an oxygen uptake of only 53-4 ml/kg/min when running at 19.4 km/h (not competitive speed ) on the flat, and use of 92 % Vo2 max atcompetitive running speed as opposed to 85 -7 % in other top-class marathon runners...... The finding that the fastest runners have a poor correlation between VO2 max and the marathon running time , therefor, comes as no surprise.
Ref : Svedenhag, Sjodin / Maximal and submaximal oxygen uptakes and blood lactate levels in elite male middle-and long-distance runners. Int. J sports Med . 1984 :5:255-61.
Question and summary :
Alone this example shows , that in an attempt to make a training zoning . Let's say 80%- 90 % is your xyz training zone with vvv stimulus and result , we have a clear evidence , that this would not apply over the above group. The different athletes would be in mathematically the same zone , but are they also physiologically in the same zone.
And this is in a relative homogenius group.
Now take joe blow and us in the same situation , where the use of VO2 max may fluctuate between 85 % down to 50 - 55 % .
Now 70 % of VO2 max , or max HR ist the training zone x . , again mathematically correct , physiologically at least worth some discussion.
No take a research study done by an intensity of 70 % of VO2 max. in avery heterogenius group.
What do you think obout the outcome of this research and the value ?
Last before a break :
In an attempt to read trough Hollman /Hettingers info about " overtraining I was coming across a very interesting info : ( Page 452 in Sportmedizin , Grundlagen fuer Arbeit, Training und Praeventivmedizin 4. Edition Schattauer by Hollmann & Hettinger :
Translated :
Overtraining : The actual factor ( reason ) which may push an athlete into an overtraining stage has not to be a physiological over reach but could come from situations like , stress in the work place , family problems and other private influences including negative thinking and others.
They correct the idea that the Testosteron?Cortisol ratio is a marker of overtraining into a marker of possible overreach only an Adlercreutz et all (1986 ) suggest , that The testosteron /cortisol ratio as to be more than 30 % lower and should be used as overtraining in connection with SHB globulin , which has to be clearly increase.
Some use only a high Cortisol level as a marker ( Barron et al 1985 , Kuipers u. Keizer 1988) And Kinderman suggests a Serumharmstoff wert ( Urea)
of above 8.3 mmol/l as a good marker.
Summary :( hollmann / Hettinger )
Becuase of the unbelieveble complexity of all the symptoms , which show up in an overtraining situation , it would be fair to ask the question , where is the actual inital trigger of all this symptoms ?
The reason may only be found in a problem concerning the CNS ( Brain ).
This assumption started a whole neu series of investigations including complete new ideas of equipment in the field of sport research.
( Positronen-Emissions-tomographie and radioactive isotope .)
We may find some new info there, resp. there is a lot of info comming out already.