NIVS group | Control group | |||
Baseline end-exercise | Post-training isotime | Baseline end-exercise | Post-training isotime | |
Patients n | 14 | 15 | ||
Exercise time min | 4.5±2.5 | 4.5±2.5 | 4.6±2.8 | 4.6±2.8 |
Heart rate beats·min−1 | 113±18 | 107±10# | 112±16 | 104±12# |
SP,O2 % | 91±5 | 91±5 | 90±4 | 89±5 |
V′E L·min−1 | 33.6±12.9 | 29.6±11.7# | 33.7±7.8 | 31.6±6.4 |
VT L | 1.13±0.35 | 1.22±0.36 | 1.24±0.35 | 1.20±0.36 |
fR breaths·min−1 | 29±5 | 24±5¶ | 28±6 | 27±6 |
V′O2 L·min−1 | 0.77±0.27 | 0.70±0.23¶ | 0.78±0.19 | 0.74±0.17 |
V′CO2 L·min−1 | 0.72±0.28 | 0.64±0.24¶ | 0.72±0.18 | 0.67±0.16 |
R | 0.93±0.06 | 0.91±0.07 | 0.93±0.07 | 0.91±0.06 |
Data are presented as mean±sd. NIVS: noninvasive ventilatory support; SP,O2: oxyhaemoglobin saturation measured with pulse oximetry; V′E: minute ventilation; VT: tidal volume; fR: respiratory frequency; V′O2: oxygen uptake; V′CO2: carbon dioxide production; R: respiratory exchange ratio. #: statistically significantly different from pre-training, p<0.05; ¶: statistically significantly different from pre-training, p<0.01.