The higher tension levels (T3 and T4) would never be utilised during normal training or testing scenarios, however, for the purposes of identifying the biomechanical effect of elastic recoil
force, it was necessary to include these in the current protocol.
The effects of loading on bone, then, can be described as a continuum of displacement. First, force inflicts temporary deformation that can be reversed by elastic recoil. Then, as force surpasses the upper limits of bone elasticity (the "yield point"), permanent deformation results.
Unlike bone, however, soft tissues experience a range of deformation that is "viscous." That is, elastic recoil does not instantaneously return tissues to their original shape when force is reduced, but neither are they permanently deformed.
The decline of pulmonary function is more associated with structural: A decrease in the static elastic recoil
of the lung, a decrease in compliance of the chest wall, and a decrease in the strength of respiratory muscles.
On the basis of behavioral and histological observations, it appears that arm flexure results from the contraction of large flexor muscles, and that recovery results from the elastic recoil
Vital capacity is determined by the lung dimensions, compliance and respiratory muscle power whereas PEFR is determined mainly by airway caliber, alveolar elastic recoil
and respiratory muscle effort.
The difference between the two curves can be explained by the elastic recoil
Again, cigarette smoking can result in the destruction of alveolar septae, causing lung tissue to experience decreased elastic recoil
. Consequently, the compliance of the lungs increases and the lung elastance decreases.
There is a loss of elastic recoil
of the lung during short-term exposure to altitude, and this may explain the increase in RV.
The apneustic center stimulates the ventral respiratory group and dorsal respiratory group (VRG and DRC) to inhale, while the pneumotaxic center switches off inspiration and, working with transpulmonary pressure and elastic recoil
, facilitates passive exhalation.
The VisoV can't distinguish between airway obstruction as found in asthma or bronchitis versus the obstruction caused in loss of elastic recoil
found with emphysema.
This new aerosol delivery device stores the aerosol that is generated during the patient's exhalation phase in a non-latex elastic reservoir bag, and releases it to the patient on the subsequent breath, with a slight boost from the elastic recoil
of the expanded bag, along with the other aerosol that the nebulizer is generating.