Table 2.
Group mean (SD) of the summary measures at baseline: the minimum (min), maximum (max), delta (max–min) and the mean of the CSA, anterior (ANT), central (CNT), and posterior (PST) lung lengths, total distance of motion (TDM) of the diaphragm, and diaphragm length (DIA).
| Min |
Max |
Delta |
Mean |
|||||
|---|---|---|---|---|---|---|---|---|
| CON | DMD | CON | DMD | CON | DMD | CON | DMD | |
| CSA (cm2) | 157.3 (35.5) | 82.4 (14.6)*** | 259.9 (50.9) | 143.0 (24.0)*** | 102.6 (25.6) | 60.7 (21.2)*** | 205.8 (47.5) | 107.0 (14.8)* |
| ANT (mm) | 172.6 (24.9) | 96.9 (20.1)*** | 211.0 (27.3) | 129.2 (21.1)*** | 38.4 (9.9) | 32.3 (11.1) | 191.4 (26.4) | 113.4 (19.5)*** |
| CNT (mm) | 146.2 (27.3) | 86.8 (11.2)*** | 217.3 (35.4) | 130.5 (13.2)*** | 71.1 (16.4) | 43.8 (11.2)** | 178.1 (34.2) | 104.6 (10.4)*** |
| PST (mm) | 182.6 (27.7) | 115.7 (11.1)*** | 258.0 (31.3) | 171.2 (20.5)*** | 75.5 (14.0) | 55.5 (19.4) | 219.3 (34.0) | 138.8 (11.5)*** |
| TDM (mm) | 501.9 (77.8) | 302.2 (33.9)*** | 685.1 (88.5) | 429.8 (39.9)*** | 183.2 (32.8) | 127.6 (37.2)* | 588.9 (92.5) | 356.7 (29.2)*** |
| DIA (mm) | 161.9 (7.4) | 174.5 (18.4)* | 276.5 (25.5) | 239.0 (31.6) | 114.6 (25.6) | 64.5 (17.6)** | 224.3 (17.1) | 211.8 (24.9) |
***P ≤ 0.001, **P ≤ 0.01, *P ≤ 0.05 two-tailed, height as covariate.
N = 10 for healthy controls (CON), N = 13 for Duchenne muscular dystrophy (DMD) boys.