Effect of a noninvasive ventilatory support during exercise of a program in pulmonary rehabilitation in patients with COPD

Figures & data

Table 1 Baseline characteristics of patients

Subject characteristics
Patients n	12
Age years	63.3(8.2)
Sex female/male	2/10
Smokers/nonsmokers	8/4
Body-mass index (kg/m^2)	22.3(2.6)
Lung function
FEV1 L	0.89(0.42)
FVC L	2.86(0.56)
FEV1/FVC	0.31(0.07)
RV L	3.28(1.18)

Abbreviations: FEV₁, forced expiratory volume in one second; FVC, forced vital capacity; RV, residual volume.

Data are presented as mean ±SD.

Table 2 Change in St. George’s respiratory questionnaire score among patients with chronic obstructive pulmonary disease who received pulmonary rehabilitation(unsupported and supported) by NIV

	St. George’s respiratory questionnaire
	Unsupported sessions		Supported sessions
	Baseline	After 10 sessions	Baseline	After 10 sessions
Symptoms*	51.57(19)	54.57(20)	54.57(20)	48.44(21)
Activities*	76.54(16)	79.74(15)	79.74(15)	74.83(12)
Impact	62.97(13)	64.5(16)	64.50(16)	66.05(22)
Total*	60.69(10)	63.71(12)	63.71(12)	58.39(17)

Data are presented as mean+/−SD.

* significant changes for the supported sessions with a decrease of each score of more than 4

Table 3 Changes in the walked distance within 6MWT, post-effort dyspnea, session duration and the maximal workload during the incremental maximal exercise test

6MWT, Session duration, post-effort dyspnea, maximal workload
	Unsupported sessions		Supported sessions
	Baseline	After 10 sessions	Baseline	After 10 sessions	p
Walking distance of 6 MWT (m)	231(97)	245(87)	245(87)	282(111)	<0.01§
Session duration (minute)	9(4.2)	19.37(3.4)	19.37(3.4)	33.75(9.5)	0.039§
Dyspnea (Borg scale)	6(2.6)	4.7(1.81)	4.7(1.81)	1.3(0.6)	<0.01§
Wmax (watts)	20(5)	27(3.7)	27(3.7)	50(10.5)	0.043§

Data are presented as mean ± SD.

§: p < 0.05, unpaired t-test between the changes in both groups of sessions.