Table 1– Results of adapted 6-min walk test in patients previously on and not on oxygen
Patients on oxygen prior to walk test#Patients not on oxygen prior to walk test
Baseline walk testOptimal O2 walk testp-valueBaseline walk testOptimal O2 walk testp-value
Distance walked m76.5±66.593.4±66.60.02135.0±108.8216.2±115.0<0.01
Sp,O2 %
 Pre-walk94.4±2.196.6±1.9<0.0194.0±2.097.7±1.0<0.01
 Post-walk77.3±7.683.0±6.9<0.0180.5±5.586.9±3.5<0.01
Borg score
 Pre-walk1.1±1.51.1±1.30.221.4±1.81.1±1.70.07
 Post-walk4.8±2.14.5±2.20.804.1±1.73.7±2.00.13
  • Data are presented as mean±sd, unless otherwise stated. Sp,O2: arterial oxygen saturation measured by pulse oximetry. #: n=41; : n=29.