Table 3—

Effects of different therapeutic interventions on endurance time, lung hyperinflation and dyspnoea in chronic obstructive pulmonary disease

Type of intervention [Ref.]
Tiotropium 252Oxygen 263Heliox 254Rehabilitation 266
Work-rate % max75758075
FEV1 % pred42313836
Δ Endurance time %+21+145+115+175
Δ IC at isotime %+12+24+12+13
Δ dyspnoea at isotime %-14-40-25
  • FEV1: forced expiratory volume in one second; % pred: % of predicted value; IC: inspiratory capacity; Δ: changes at isotime expressed as a percentage of control condition.