STATISTICAL ANALYSIS. Measured endpoints. There are 4 measured endpoints: vital capacity (FVC in mls), peak expiratory flows (PEF in L/min), plus maximal inspiratory and expiratory pressures (MIP and MEP in cm H2O). All are continuous variables so will be expressed as mean+/- one standard deviation. Apart from graphical presentation of the results, the only statistical test will be a comparison of pre-treatment and post treatment values for each of the four variables.