I am looking to buy a Moxy monitor but I would like to make sure that i twill give me about what I am looking for.
Up to now I use a HemoPoint analyzer from Stanbio (which is a very accurate equipment) to measure my pre-training hemoglobin level since about 3 years hoping to use that value as a guide to set my performance objective during training.
What I find out is that, at least in my case, the hemoglobin level is a very poor predictor of the intensity level I can reach. Considering the heart rate (which is the only measure I can trust since all training equipment measure Kcal differently) it look like the Hbg has to reach a certain level to attain the maximum performance (in my case around 14%), and, after that level, there is no relation between Hgb and HR.
Now, what can I get from Moxy equipment? Is the SmO2 a better predictor of the attainable performance on a daily base or it it more a measure of the progression.
Said otherwise, will I be able to set my daily performance goal on the information I will get from it.
So here just some basic info on Hb and Hct
Accuracy of Laboratory Devices and Impact of Physiologic Variahttp://www.masimo.com/pdf/sphb/lab5447a.pdftion
1.. How is Hb measured ?
Hemoglobin is usually measured as a part of the complete blood count (CBC) from a blood sample.
Several methods exist for measuring hemoglobin, most of which are done currently by automated machines designed to perform several different tests on blood. Within the machine, the red blood cells are broken down to get the hemoglobin into a solution. The free hemoglobin is exposed to a chemical containing cyanide which binds tightly with the hemoglobin molecule to form cyanomethemoglobin. By shining a light through the solution and measuring how much light is absorbed (specifically at a wavelength of 540 nanometers), the amount of hemoglobin can be determined.
How is the hematocrit measured?
The hematocrit is typically measured from a blood sample by an automated machine that makes several other measurements at the same time. Most of these machines in fact do not directly measure the hematocrit, but instead calculate it based on the determination of the amount of hemoglobin and the average volume of the red blood cells. The hematocrit can also be determined by a manual method using a centrifuge. When a tube of blood is centrifuged, the red cells will be packed into the bottom of the tube. The proportion of red cells to the total blood volume can be visually measured.
I believe :
the hemoglobin level is a very poor predictor of the intensity level I can reach:
I am not too surprised, as Hb as such is simply the transport option of O2 in the body. As such you may have many trucks to transport your energy but you do not know with a Hb test, how many of the trucks are loaded or not and whether even if they are there will be loaded.
Again a question of the OP2 Diss curve.
MOXY on the other hand can not tell you how many trucks you have but whether you load and unload the trucks you have..
So Hb testing gives you an indication of your truck number or fleet in simple words,
and MOXY gives you the quality of the trucks whether you have them loaded or unloaded and wheter you actually are able to load the unloaded once or unloaded the loaded once.
If we go to SpO2 finger puls oxymetrie.
Same here you may have a 99% load situation but that does not mean that you have enough O 2 available.
You still may be anemic.
Lets' see whether i can explain that simple.
You may have 10 trucks and 9 are loaded so SpO2 would give you a 90 % load situation. Similar to MOXY.
Now you have 100 trucks and you have 80 loaded so you actually move much more O2 but the Finger pulse oxymeter will tell you that you have only 80 % loaded.. You can combine the Hb testing and know that you have sufficient trucks, but this does not tell you that you can use sufficient needed O2 .
Remember the bio availability.
You may be fully loaded and you may have a lot of trucks but you still go hypoxic as the O2 diss curve is too far to the left side.
You may have much less trucks fully loaded and you are able to unload all of them and you are much better on with O2 supply to your working muscles.
With MOXY you look at the bodies ability on a common day to load and unload and compare with your base line.
In case of similar baseline but performance loss you may have to check . whether you are low on actual Hb with a blood test.
So 2 very close information's but very different use for performance information. One Hb is the structure do you have the structure.
MOXY is more the function do you can function properly to use and load O2 on the Hb.
Hope this makes some sense.