Table 3.

Spearman's correlations between age, height, weight, and MRI measures of the lung area (cm²), the distances of the diaphragm from the thoracic apex (ANT, POST, and CNT; cm), diaphragm contractility (diaphragm lengh Insp/Exp; %), chest wall motion (CWM; cm²), and diaphragm motion (DM; cm²) in individuals with Duchenne muscular dystrophy and healthy volunteers

	Age	Weight	Height	Lung area Inspa	Lung area Expb
Individuals with Duchenne muscular dystrophy (n = 11)
Lung area Insp	−0.08	0.47	0.11	–	0.52
Lung area Exp	−0.34	0.48	0.56	0.52	–
ANT Insp	−0.23	0.06	−0.06	0.67c	0.57
ANT Exp	−0.52	0.05	0.20	0.34	0.79d
POST Insp	0.05	0.35	−0.09	0.87d	0.37
POST Exp	−0.35	0.35	0.22	0.59	0.83d
CNT Insp	−0.23	0.17	−0.04	0.85d	0.57
CNT Exp	−0.56	0.25	0.31	0.41	0.94d
Diaphragm contractilitye	−0.61	−0.28	0.27	−0.17	0.43
CWM	−0.44	0.49	0.15	0.83d	0.80d
DM	0.27	0.35	−0.06	0.79d	−0.03
Healthy volunteers (n = 15)
Lung area Insp	0.16	0.41	0.47	–	0.77d
Lung area Exp	0.11	0.22	0.31	0.77d	–
ANT Insp	0.37	0.31	0.58c	0.81d	0.80d
ANT Exp	0.28	0.22	0.47	0.74d	0.91d
POST Insp	0.32	0.36	0.49	0.72d	0.72d
POST Exp	0.14	0.08	0.19	0.65d	0.81d
CNT Insp	0.34	0.18	0.48	0.68d	0.70d
CNT Exp	0.22	0.13	0.34	0.70d	0.82d
Diaphragm contractilitye	0.14	0.15	−0.05	−0.03	0.33
CWM	0.00	0.26	0.29	0.91d	0.75d
DM	0.02	0.24	0.24	0.33	0.07

^aInspiration.

^bExpiration.

^c P < 0.05.

^d P < 0.01.

^eDMD participants n = 9, controls n = 12.