Impacts of Respiratory Muscle Training on Respiratory Functions, Maximal Exercise Capacity, Functional Performance, and Quality of Life in School-Aged Children with Postoperative Congenital Diaphragmatic Hernia

Table 2

Intra- and intergroup changes of outcome variables pre- and posttreatment.

Variables	Study group ()	Control group ()	value
FVC (% pred.)
Pre-			0.891
Post-			0.019
value	<0.001	0.053
FEV1 (% pred.)
Pre-			0.887
Post-			0.047
value	0.002	0.107
VO2max (mL/kg/min)
Pre-			0.871
Post-			0.036
value	0.008	0.290
VE/VCO2 slope
Pre-			0.752
Post-			0.033
value	0.002	0.291
6-MWT
Pre-			0.203
Post-			0.028
value	<0.001	0.292
PedsQL (overall score)
Pre-			0.509
Post-			0.015
value	<0.001	0.632

FVC: forced vital capacity; FEV1: forced expiratory volume in one second; VO₂max: maximal oxygen uptake; VE/VCO₂: minute ventilation/carbon dioxide production; 6-MWT: six-minute walk test; PedsQL: pediatric quality of life inventory.