Table 3.
Participants' respiratory muscle function
| Variable | Boys (n = 117) | Girls (n = 134) | p value | 95% CI | ||
|---|---|---|---|---|---|---|
| P 0.1, cm H 2O a | 0.23±0.13 | 0.06 to 0.89 | 0.23±0.11 | 0.05 to 0.67 | 0.998 | –0.03 to 0.03 |
| TI/TTOTa | 0.46±0.05 | 0.28 to 0.56 | 0.46±0.05 | 0.35 to 0.64 | 0.699 | –0.02 to 0.01 |
| PImax, cm H 2O | 113±27 | 61 to 177 | 101±27 | 53 to 171 | 0.001** | 5 to 19 |
| PEmax, cm H 2O | 137±36 | 73 to 263 | 118±30 | 36 to 234 | <0.001*** | 10 to 27 |
| P 0.1/P Imax, %a | 0.22±0.13 | 0.04 to 0.70 | 0.25±0.16 | 0.04 to 1.12 | 0.074 | –0.074 to 0.003 |
| TTO.1a, b | 0.010±0.006 | 0.002 to 0.030 | 0.011±0.006 | 0.002 to 0.028 | 0.124 | –0.0030 to 0.0004 |
Values are presented as mean ± SD and range. CI, confidence interval; P0.1, mouth occlusion pressure; PEmax, maximal expiratory pressure; PImax, maximal inspiratory pressure;TI/T TOT,inspiratory time ratio;TT0.1,tension time index.
**
p < 0.01;
***
p < 0.001.
a
In this case, n = 103 for boys and n = 108 for girls.
b
Calculated as: TT0.1, (P 0.1/P Imax) ×(TI/TTOT).