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. 2021 Jun 24;21(13):4329. doi: 10.3390/s21134329

Table 1.

Intra-rater and intra-session reliability analysis for RUSI diaphragm thickness within both manual and specific orthosis device measurement methods during relaxed breathing.

RUSI Diaphragm Thickness (cm) Baseline Mean ± SD (95% CI) After 1 h Mean ± SD (95% CI) ICC(1,2)
(95% CI)		 SEM MDC p-Value
Manual Probe Fixation
Tins right diaphragm 0.21 ± 0.07 (0.19–0.24) 0.22 ± 0.07 (0.19–0.24) 0.989 (0.978–0.994) 0.009 0.024 0.141 †
Texp right diaphragm 0.13 ± 0.04 (0.11–0.15) 0.13 ± 0.04 (0.12–0.15) 0.993 (0.986–0.996) 0.003 0.008 0.141 *
Tins-exp right diaphragm 0.08 ± 0.05 (0.06–0.10) 0.08 ± 0.05 (0.06–0.10) 0.982 (0.966–0.991) 0.006 0.018 0.404 *
Tins left diaphragm 0.20 ± 0.07 (0.18–0.23) 0.21 ± 0.07 (0.18–0.23) 0.994 (0.989–0.997) 0.005 0.015 0.152 *
Texp left diaphragm 0.15 ± 0.05 (0.13–0.17) 0.10 ± 0.03 (0.09–0.11) 0.714 (−0.11–0.92) 0.021 0.059 <0.001 *
Tins-exp left diaphragm 0.05 ± 0.04 (0.04–0.06) 0.10 ± 0.04 (0.09–0.12) 0.982 (0.966–0.991) 0.005 0.014 <0.001 *
Orthosis Device Probe Fixation
Tins right diaphragm 0.23 ± 0.07 (0.20–0.25) 0.23 ± 0.07 (0.20–0.26) 0.991 (0.982–0.995) 0.006 0.018 0.327 *
Texp right diaphragm 0.15 ± 0.05 (0.13–0.17) 0.16 ± 0.05 (0.14–0.18) 0.947 (0.892–0.973) 0.002 0.007 0.067 †
Tins-exp right diaphragm 0.07 ± 0.05 (0.05–0.09) 0.07 ± 0.05 (0.05–0.09) 0.935 (0.874–0.966) 0.012 0.035 0.283 †
Tins left diaphragm 0.22 ± 0.07 (0.19–0.24) 0.22 ± 0.07 (0.19–0.24) 0.993 (0.987–0.997) 0.005 0.015 0.823 *
Texp left diaphragm 0.17 ± 0.05 (0.15–0.19) 0.17 ± 0.05 (0.15–0.19) 0.996 (0.992–0.998) 0.0002 0.0005 0.119 *
Tins-exp left diaphragm 0.04 ± 0.05 (0.03–0.06) 0.04 ± 0.04 (0.03–0.06) 0.978 (0.958–0.989) 0.006 0.018 0.360 *

Abbreviations: CI, confidence interval; ICC, intraclass correlation coefficient; MDC, minimum detectable change; SD, standard deviation; SEM, standard error of measurement; Tins, maximum inspiration time; Texp, maximum expiration time. p < 0.05 was considered as statistically significant for a 95% CI (in bold). * Student t-test for paired samples was used. † Wilcoxon test for paired samples was used.