Table 2. Plethysmography analysis measures and peripheral oxygen saturation (SpO2) of the COPD group (A) and the healthy group (B) (n=15/group).
| A | NB | DB | PB |
|---|---|---|---|
| Volume measures | |||
| ViVol | 397.9±125.3 | 880.5±421.4 * | 591.4±377.5 # † |
| VeVol | 400.9±128.7 | 881.7±426.4 * | 533.5±291.3 # † |
| Vent | 6.0±2.4 | 9.8±2.5 * | 8.9±4.3 |
| Time measures | |||
| Br/M | 16.7±3.8 | 11.0±3.5 * | 16.9±7.4 # |
| Ti | 1.3±0.3 | 1.9±0.4 * † | 1.4±0.3 # † |
| Te | 2.9±1.3 | 4.5±2.0 * | 2.7±0.9 # |
| Tt | 4.2±1.5 | 6.4±2.1 * | 4.1±1.1 # |
| Ti/Tt | 0.34±0.06 | 0.33±0.09 | 0.36±0.07 † |
| Thoracoabdominal coordination measures | |||
| %RCi | 54.5±28.1 | 50.6±48.4 | 61.1±28.2 |
| LBI | 1.07±0.26 | 1.18±0.26 | 1.03±0.03 |
| PhRIB | 13.5±12.9 † | 38.8±21.6 * | 21.4±10.5 # |
| PhREB | 13.9±8.0 † | 37.1±19.0 * | 21.7±9.8 # |
| PhRTB | 13.4±8.0 † | 37.2±19.6 * | 22.1±9.5 # |
| PhAng | 24.1±22.1 † | 67.0±47.7 * † | 30.6±12.3 # † |
| Oximetry | |||
| SpO2 | 95.4±3.4 | 99.4±1.4 * | 99.3±1.6 * |
| B | NB | DB | PB |
| Volume measures | |||
| ViVol | 361.9±145.4 | 1347.8±524.3 * | 948.6±439.3 * # |
| VeVol | 368.3±145.2 | 1420.5±584.3 * | 993.0±457.9 * # |
| Vent | 5.6±1.8 | 13.6±5.6 * | 14.4±4.7 * |
| Time measures | |||
| Br/M | 16.4±3.7 | 11.8±4.8 * | 16.2±3.4 # |
| Ti | 1.4±0.4 | 2.9±0.9 * | 1.8±0.4 # |
| Te | 2.3±0.5 | 5.2±1.8 * | 2.5±0.6 # |
| Tt | 3.7±0.8 | 8.1±2.5 * | 4.2±0.9 # |
| Ti/Tt | 0.39±0.04 | 0.38±0.07 | 0.43±0.04 # |
| Thoracoabdominal coordination measures | |||
| %RCi | 63.3±16.3 | 66.7±15.5 | 80.9±18.3 * |
| LBI | 1.00±0.00 | 1.08±0.06 | 1.05±0.08 |
| PhRIB | 5.7±3.0 | 29.6±14.6 * | 25.8±12.3 * |
| PhREB | 5.8±2.7 | 30.7±14.2 * | 28.0±10.1 * |
| PhRTB | 5.7±2.5 | 26.8±12.7 * | 26.2±10.4 * |
| PhAng | 9.1±4.2 | 39.1±19.1 * | 21.1±9.5 * # |
| Oximetry | |||
| SpO2 | 97.4±1.6 | 99.7±0.7 * | 99.5±0.8 * |
NB= natural breathing; DB= diaphragmatic breathing; PB= pilates breathing; ViVol= inspiratory tidal volume; VeVol= expiratory tidal volume; Vent= minute ventilation; Br/M= Respiratory Rate; Ti= Inspiratory Time; Te= Expiratory Time; Tt= Total Breath Time; Ti/Tt= fractional inspiratory time; %RCi= Percent Rib Cage Inspiratory Contribution to Tidal Volume Ratio; LBI= Labored Breathing Index; PhRIB= phase relation during inspiration; PhREB= phase relation during expiration; PhRTB= phase relation of entire breath; PhAng= phase angle (PhAng), SpO2= peripheral oxygen saturation. Values are mean±SD. Intragroup analysis: *<0.05 compared with NB. #<0.05 compared with DB (ANOVA). Intergroup analysis: † compared with healthy group in the same breathing (unpaired Student's t test)