. 2012 Jun 13;7(6):e39124. doi: 10.1371/journal.pone.0039124

Table 1. Subjects characteristics.

	Controls	COPD	COPD
	(n = 7)	MTCSA >70 cm²	MTCSA <70 cm²
		(n = 9)	(n = 7)
Age (years)	67±2.7^a	64±2.3^a	70±1.7^a
BMI (kg/m²)	27.2±1.7^a	27.2±1.8^a	22.3±1.7^b
FEV₁, L	3.1±0.2^a	1.0±0.1^b	1.0±0.2^b ^*
FEV₁, % predicted	107.3±3.4^a	34.0±2.5^b	31.4±5.8^b ^*
FVC, L	3.9±0.3^a	2.6±0.2^b	2.8±0.2^b ^†
FVC, % predicted	105.6±4.5^a	69.0±4.6^b	71.7±8.6^b
FEV₁/FVC, %	79.3±1.5^a	36.6±1.3^c	33.1±3.9^c ^*
DL_co, (ml CO/min/mmHG)	21.8±2.6^a	14.7±1.1^b	13.0±0.8^b ^†
MTCSA (cm²)	103.5±7.8^a	85.5±3.3^b	66.4±5.5^c ^*
Type I fibre
Distribution, %	57.0±6.6^a	32.8±3.6^b	28.2±7.9^b
CSA, (µm²)	5261±360^a	4794±364^a	4246±314^b
Type II fibre
Distribution, %	43.0±6.6^a	67.2±3.6^b	71.8±7.9^b
CSA, (µm²)	4026±276	3731±203	3677±227

Definition of abbreviations: BMI = Body mass index; FEV₁ = Forced expiratory volume in 1 second; FVC = Forced vital capacity; DLCO = Diffusing capacity of carbon monoxide; MTCSA = Mid-thigh cross-sectional area; CSA = Cross-sectional area. Values with different lower case letter are significantly different (p<0.05).

p<0.001;

^†

p<0.01.