Table 2.
Inter- and intraobserver reproducibility of global circumferential and global longitudinal strain rate at rest and during exercise testing.
Global circumferential strain rate | Global longitudinal strain rate | |||||
---|---|---|---|---|---|---|
Baseline | Low stress | High stress | Baseline | Low stress | High stress | |
Interobserver | ||||||
Mean difference | −0.04 ± 0.23 | −0.05 ± 0.29 | 0.00 ± 0.31 | −0.01 ± 0.19 | 0.01 ± 0.24 | 0.03 ± 0.28 |
Absolute difference | 0.16 ± 0.17 | 0.21 ± 0.22 | 0.22 ± 0.22 | 0.12 ± 0.14 | 0.17 ± 0.17 | 0.19 ± 0.21 |
rho | 0.69 | 0.67 | 0.69 | 0.56 | 0.63 | 0.68 |
95%-CI | −0.07; 0.01 | −0.12; 0.01 | −0.07; 0.08 | −0.03; 0.03 | −0.04; 0.04 | −0.02; 0.09 |
LOA | −0.48; 0.41 | −0.63; 0.52 | −0.61; 0.62 | −0.36; 0.36 | −0.48; 0.48 | −0.52; 0.58 |
Intraobserver | ||||||
Mean difference | −0.08 ± 0.26 | −0.07 ± 0.31 | 0.03 ± 0.28 | −0.07 ± 0.22 | −0.10 ± 0.26 | −0.08 ± 0.33 |
Absolute difference | 0.16 ± 0.22 | 0.20 ± 0.24 | 0.19 ± 0.21 | 0.13 ± 0.19 | 0.18 ± 0.22 | 0.20 ± 0.26 |
rho | 0.69 | 0.73 | 0.68 | 0.53 | 0.72 | 0.64 |
95%-CI | −0.14;−0.02 | −0.16; 0.01 | −0.05; 0.13 | −0.12; −0.01 | −0.17;−0.04 | −0.14; 0.03 |
LOA | −0.58; 0.42 | −0.67; 0.53 | −0.51; 0.59 | −0.50; 0.37 | −0.62; 0.41 | −0.63; 0.51 |