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Table 2 Baseline sputum properties and subjective reports

From: Effects of treadmill exercise versus Flutter® on respiratory flow and sputum properties in adults with cystic fibrosis: a randomised, controlled, cross-over trial

 

Mean ± SD

Range

Sputum solids content (%)

6.4 ± 2.6

1.6–13.3

Sputum mechanical impedance (G*) at 1 rad/s (Pa)

21.0 ± 15.9

5.7–59.1

Sputum mechanical impedance (G*) at 100 rad/s (Pa)

174.8 ± 76.7

84.1–396.7

Sense of chest congestion (cm)

5.5 ± 2.4

0.5–9.8

Ease of expectoration (cm)

4.9 ± 2.5

0.1–10.0

  1. Mean ± standard deviation and range of sputum properties and subjective reports for the first sputum sample collected from the 24 participants who completed the study. Sputum mechanical impedance (G*, the vector sum of sputum viscosity and elasticity). Subjective sense of chest congestion (0 = very congested, 10 = very clear) and ease of expectoration (0 = very difficult to expectorate, 10 = very easy to expectorate) scored by participant on a 10 cm visual analogue scale