The effects of training on inspiratory muscle function and health-related quality of life
| H-IMT# | S-IMT¶ | |||
| Baseline | Post-training | Baseline | Post-training | |
| Inspiratory muscle function | ||||
| PI,max -cmH2O | 62.7±16.5 | 80.7±17.8*,§ | 66.5±19.0 | 71.7±18.7* |
| PI,max % predicted | 79.4±26.4 | 101.3±25.6*,§ | 83.4±26.6 | 89.7±24.7* |
| Pth,max -cmH2O | 38.5±9.7 | 60.1±18.0*,§ | 40.5±18.3 | 42.8±18.6 |
| Pth,max/PI,max | 62.9±13.4 | 75.0±15.5*,§ | 61.8±20.4 | 58.7±16.7 |
| Dyspnoea at end of PTL | 5.2±2.9 | 5.2±2.6 | 5.5±3.2 | 5.4±3.6 |
| Respiratory effort at end of PTL | 6.3±2.1 | 6.0±2.6 | 6.5±2.6 | 7.3±2.5* |
| Inspiratory capacity L | 1.8±0.3 | 2.0±0.4 | 1.7±0.6 | 1.8±0.7 |
| Health-related quality of life+ | ||||
| Total score | 4.5±0.9 | 5.3±0.7* | 4.1±1.0 | 4.5±0.9* |
| Dyspnoea | 3.4±1.1 | 4.9±0.7*,§ | 2.8±0.8 | 3.7±1.0* |
| Fatigue | 3.9±0.9 | 4.8±0.8*,§ | 3.7±1.0 | 4.0±1.0 |
| Emotional function | 5.1±1.0 | 5.6±0.8* | 4.6±1.2 | 4.9±1.2 |
| Mastery | 5.0±1.1 | 5.7±0.8* | 4.8±1.5 | 5.3±1.3* |
Data are presented as mean±sd. H-IMT: high-intensity inspiratory muscle training; S-IMT: sham inspiratory muscle training; PI,max: maximum inspiratory pressure; Pth,max: maximum threshold pressure; PTL: progressive threshold loading test. #: n = 16; ¶: n = 17; +: all results for health-related quality of life are presented as points per item. *: p<0.05 compared with baseline measures; §: p<0.05 versus change seen in S-IMT group.