Post Number: 40
|Posted on Monday, November 06, 2006 - 05:46 am: |
We got a lot's of questions over the last few month concerning the benefits of using a Spiro Tiger, instead of using a power lung or any other breathing device.
Here again some of the points we should think about:
1. What muscle fibre type is the diaphragm ?
2. Do you think , training your leg muscles with a heavy resistance, where you have to quit after 30 - 45 sec will use the right muscle fibres.
3. Do you think, that an endurance muscle with a lot of mitochondria and a high % of STF fibers should be changed to FTF fibres ?
4. If we breath against forced resistance , and the weakest muscle is the diaphragm , but we nevertheless keep working hard, we may use some additional muscles like scaleni , upper trapezius , sternocleidom. and some other, so called helpers for inspiration. Now traiing this helpers may improve the inspiration power, but does it help to improve the proper function.
5. Any additional extremity muscle used during forced respiration will attract the metaboreflex, and we can easy test this by using an Oximeter.
This is one of the reason , why we use at the beginning an Oximeter, so we can controle proper technik, by using only diaphragm and some intercostal muscle systems, but eliminating the " helpers "
6. If you breath fast and not as deep , as slow and deep your % of dead space will be actually increasing , if you look at the Tidal volume and the dead space.
Example : 200 ml dead sapce.
2 liter tidal volume, compared with
200 ml dead space
4 liter tidal volume.
Or 2liter air in a 5 liter lung , versus 4 liter air in a 5 liter lung.
Question : airpressure in the lung,
Filling situation of the alveoly by 2 versus 4 liter. a.s.o
Okay here we have a lot of questions and some thoughts through all of them may help us to come to a better understanding.
There is only so much O2 your body can take in or transport or use.
So if we ask in the same time for O2 on different areas:
Arms , legs and breathing muscle we may have the situation , where somebody has to make a decision.
The metabo relex may just be the guy to look for , and he may decide , that it is better to keep the diaphragm going and stay alive, than keep biking hard , but not breath anymore.
So he will produce a vasoconstriction to the leg muscles , to secure the ability of O2 supply to the diaphragm.
Last but not least:
As a triathlete : would you get in shape for an Ironman by just doing 40 - 60 sec hard efforts ( like you do with a power lung )
So the question as always is :
What is your training goal:
What is your time commitment ?
What is your strenght or weakness ?
What part of the season are you in : Off season versus racing season. ?
Well let's go back to work and see what is coming from this discussion ?