Figure 2From: Airway resistance at maximum inhalation as a marker of asthma and airway hyperresponsivenessPlot of R min versus height for nonasthmatic subjects. Rmin (cmH2O/L/s) is plotted by height (m) for 100 nonasthmatic subjects, including 84 subjects recruited for limited testing (+) and 26 nonasthmatic methacholine nonresponders (0), as described in the text. The superimposed regression line is derived from a second order linear regression (r2 = 0.60).Back to article page