from Medical sciences (Naish, J. Et al)
Clinical box 13.21 CO2 levels and oxygen therapy The responsiveness of the respiratory centre and the central and peripheral chemoreceptors to variation in paO2 and paCO2 underpin the principles of oxygen therapy, particularly for patients with chronic obstructive pulmonary disease (COPD) and chronically elevated paCO2 who may need long-term O2 therapy. In chronic lung diseases, such as COPD, CO2 retention occurs so that paCO2 is chronically elevated. The central chemoreceptors adapt to this chronic state of hypercapnia, becoming unresponsive to the elevated paCO2, so that the main drive for maintaining ventilation comes from the peripheral chemoreceptors, which respond to hypoxia. Patients with chronic CO2 retention who go into type II respiratory failure (see later) risk respiratory arrest if given high-partial pressure O2 therapy, which removes the main respiratory drive (low paO2).
So what I was saying is that whilst training is partially learning to deal with the feelings it can also physiologically affect the body to benefit longer holds. The reason that I used the example of people with respiratory conditions is that there is well documented evidence of this being the case.
Clinical box 13.21 CO2 levels and oxygen therapy The responsiveness of the respiratory centre and the central and peripheral chemoreceptors to variation in paO2 and paCO2 underpin the principles of oxygen therapy, particularly for patients with chronic obstructive pulmonary disease (COPD) and chronically elevated paCO2 who may need long-term O2 therapy. In chronic lung diseases, such as COPD, CO2 retention occurs so that paCO2 is chronically elevated. The central chemoreceptors adapt to this chronic state of hypercapnia, becoming unresponsive to the elevated paCO2, so that the main drive for maintaining ventilation comes from the peripheral chemoreceptors, which respond to hypoxia. Patients with chronic CO2 retention who go into type II respiratory failure (see later) risk respiratory arrest if given high-partial pressure O2 therapy, which removes the main respiratory drive (low paO2).
So what I was saying is that whilst training is partially learning to deal with the feelings it can also physiologically affect the body to benefit longer holds. The reason that I used the example of people with respiratory conditions is that there is well documented evidence of this being the case.