Performance and response of the IST-1 and the IST-2
| (n=50) | IST-1 | IST-2 | ||
| No of steps | 49.5 (25; 72) | 52 (22; 89.25)* | ||
| Duration (s) | 234 (134.5; 312.75) | 245 (124.25; 363)* | ||
| Step cadence (steps/min) | 14 (12; 18) | 15 (12; 18)* | ||
| Pre | Post | Pre | Post | |
| Heart rate (bpm) | 77.8±11.5 | 103.7±16.4† | 77.7±12.3 | 105.1±14.4† |
| SpO2 (%) | 95±1.9 | 90.3±4.1† | 94.8±2.1 | 90.3±4.3† |
| Dyspnoea (rating) | 0 (0; 1) | 5 (4; 7)† | 0 (0; 1) | 5 (3; 6.25)† |
| Leg fatigue (rating) | 0 (0; 0) | 5 (4.75: 6.25)† | 0 (0; 0) | 5 (4; 6.25)† |
Values are expressed as median (percentile 25–75) or mean±SD.
*P<0.05 for comparisons between the IST-1 and IST-2.
†P<0.05 for comparisons within tests (pretest vs post-test).
IST, Incremental Step test; SpO2, peripheral oxygen saturation.