Physiological responses to the 1-min sit-to-stand (STS) test, five-repetition STS test and 6-min walk test (6MWT) at rest, during exercise and recovery
| Rest# | Exercise | Recovery# | |||||||
| 1-min STS test | 5STS test | 6MWT | 1-min STS test | 5STS test | 6MWT | 1-min STS test | 5STS test | 6MWT | |
| Subjects | 21 | 21 | 15 | 21 | 21 | 15 | 20§ | 21 | 12ƒ |
| Test score¶ | 18.9±5.4 | 10.1±4.4 | 376.1±89.4 | ||||||
| V′O2 mL·kg−1·min−1 | 4.7 ±0.9 | 4.5±1.1 | 4.8±1.3 | 12.3±3.8 | 5.7±2.2 | 12.3±2.1 | 5.2±1.4 | 4.5±1.2 | 4.3±1.1 |
| V′CO2 mL·kg−1·min−1 | 4.1±0.8 | 3.7±0.9 | 4.0±1.3 | 10.5±3.1 | 4.7±2.1 | 10.6±2.5 | 5.4±1.5 | 3.8±1.1 | 4.0±1.0 |
| RER | 0.86±0.05 | 0.83±0.06 | 0.83±0.10 | 0.85±0.08 | 0.81±0.09 | 0.85±0.09 | 1.03±0.07 | 0.84±0.06 | 0.96±0.06 |
| V′E L·min−1 | 14.4±2.9 | 13.3±2.7 | 14.8±2.0 | 32.0±9.4 | 18.8±5.8 | 33.6±10.3 | 18.2±4.0 | 14.0±4.1 | 15.2±2.9 |
| VT L | 0.85±0.27 | 0.91±0.36 | 0.92±0.29 | 1.23±0.39 | 0.73±0.39 | 1.27±0.32 | 1.09±0.37 | 0.85±0.30 | 1.04±0.36 |
| fR breaths·min−1 | 18.2±5.2 | 16.3±4.8 | 17.1±3.5 | 27.2±7.9 | 30.3±10.1 | 27.6±8.0 | 17.9±4.5 | 17.6±4.6 | 15.8±4.1 |
| HR beats·min−1 | 87.8±8.0 | 88.2±10.3 | 83.5±10.2 | 107.0±10.9 | 97.1±9.8 | 107.3±14.8 | 88.7±8.8 | 87.0±9.2 | 88.7±10.7 |
| SpO2 % | 92.8±7.7 | 92.5±3.0 | 92.7±2.8 | 90.1±3.4 | 91.7±2.5 | 85.8±6.3 | 94.4±2.0 | 92.6±2.5 | 94.0±3.0 |
| Borg dyspnoea+ | 1.2±1.1 | 1.2±1.1 | 0.8±0.9 | 4·4±2.2 | 2.4±1.8 | 4.7±2.3 | |||
| Borg leg fatigue+ | 1.2±1.3 | 1.0±1.0 | 0.7±0.8 | 3.7±1.7 | 2.1±1.7 | 2.8±1.8 | |||
Data are presented as n or mean±sd. V′O2: oxygen consumption; V′CO2: carbon dioxide output; RER: respiratory exchange ratio; V′E: minute ventilation; VT: tidal volume; fR: respiratory frequency; HR: heart rate; SpO2: oxygen saturation. #: rest 3 min, recovery 5 min; ¶: 1-min STS test: repetitions, 5STS test: seconds, 6MWT: metres; +: Borg scales performed immediately pre- and post-test; §: one patient removed facemask immediately after test due to breathlessness; ƒ: two patients removed facemask during recovery due to breathlessness; one patient was stopped due to SpO2 of 70%.