Inspiratory Capacity during Exercise: Measurement, Analysis, and Interpretation

Table 1

Consequences of dynamic hyperinflation.

Negative consequences of dynamic hyperinflation
(i) Increased elastic and threshold loading on the inspiratory muscles
(ii) Increased work and O2 cost of breathing
(iii) Functional inspiratory muscle weakness and possible fatigue
(iv) Mechanical constraint on tidal volume expansion
(v) Early ventilatory limitation to exercise
(vi) Increased neuromechanical uncoupling of the respiratory system
(vii) CO2 retention and possibly arterial hypoxemia
(viii) Potential adverse cardiovascular consequences
(ix) Increased dyspnea and exercise intolerance

For a more detailed review on the consequences of dynamic hyperinflation, see O'Donnell and Laveneziana [21].