Do see the pics on part 4 look at the total word document as they are too many for here.
Now we see that in both workouts the SmO2 values increase as a sign of a better oxygenation than compared to the start. Now remember: The SmO2 value does NOT tell us how much blood or Hb we have, it tells us how “good’ the Hb we have, whatever it is better or not as good loaded with O2.
Look at the discussion in the Forum with the Hb as a blood test for the amount of Hb versus the % of loaded Hb as a % of what is there.. A higher SmO2 value means than more Hb are loaded of the total Hb. It is important to understand, that this is not good nor is it bad. It is what it is. The question rather is, whether the O2 we have loaded can be used for activities or on the other side the HB which is not loaded can be loaded in a decent time of rest.
Remember the word I use BIO AVAILABILITY.
This can create the strange situation, that you may see a very high SmO2 but still go hypoxic ( resp in the old terms you may see a high SmO2 but as well an increase in lactate as a sign of metabolic demand of O2 independent energy sources.. On the other side you may see a low SmO2 value but no lactate in the system as you just simply use O2 what is coming in and you are in a balance of input and use but have no chance at the intensity to add or reload at the current moment.
Here 2 example of a 5/1/5 assessment. Both have at the end a very high lactate but very different desaturation
Which of the above client has a great bio availability and who not? Now let’s go back to our start assessment here.
Look at the green thick arch and the red arch. Now below you see some “classical “ 3 min step and some 5 min step test and a 5/1/5. What did this person do during this workout possibly under the red arch?
Yellow here is tHb and purple is SmO2 ( Hb Diff. )
Green is SmO2 look at the different physiological reactions at the end of the test. Above steep end of SmO2 so great utilization but delivery limitation below Utilization limitation flat or nearly flat SmO2. Both due to slow start great info on SmO2 increase (more O2 delivered than used short peak and then delivery problem with more O2 used than delivered. But in both cases hard to know, where the critical intensity would be, as an ongoing increase very 2 -3 min does not give the physiological system time enough to try to create a homeostasis. If we give more time like 5 min. It may look like this here.
5/1/5 means you do on load rest 1 min repeat the same load and then increase for another 5/1/5 . You see much easier, where the body tried and won and where he tried and “lost “. Then and we will discuss this later is the information you gain in the rest period on how do you recover. . Below I like to show you some “ classical” information of classical tests compared with our idea of 5/1/5 or what we called IPAHD or now STRIP ( structured intensity protocol )
Here a classical lactate test curve look at the same problem of where would something get into trouble is if you do a “ classical’ SmO2 curve.
It is the Protocol who forces a physiological interpretation ( reaction) instead the physiological activity who creates the physiological interpretation. The lag time in equipment like lactate and VO2 is missing the actual reactions caused by the activity.
Green SmO2 red lactate same test so same person. Same problem, where is the critical point of a homeostasis disruption??? All speculation which will end up in any mathematical idea of angel tangent and amount of changes ??? Here an example of a lag time problem if we use lactate
Now think what the lactate values would be on these different points from our workout like here? Lactate high or low?
Same would be with VO2.
Below a 5/1/5 picture. a) Look at lactate trends in the 5/1/5 and look at VO2 trend
So next up look at again the pic. And see, that there is a hidden step test in this workout. Let’s give it a closer look.
Next up “step test” during a workout.
Here the closer look
Make the zoning based on this . Remember SmO2 up flat and down and in short steps down in different degrees.