A-C. Segmental 2DST analyses of left ventricular short-axis recordings at the apical level (A), at the papillary muscle level (B) and at the chordal level (C).A: εC, circumferential peak strain. B: εR, radial peak strain. C: DR, radial peak displacement. D: SRC-sys, circumferential peak systolic strain rate. E: SRC-E, circumferential peak early-diastolic strain rate. F: SRC-A, circumferential peak late-diastolic strain rate. G: SRR-sys, radial peak systolic strain rate. H: SRR-E, radial peak early-diastolic strain rate. I: SRR-A, radial peak late-diastolic strain rate. Box-and-whisker diagrams, with the line near the middle of the box indicating the median, the top and the bottom of the box indicating the upper and lower quartile, and the whiskers indicating the 5th and 95th percentile observations, respectively. P values of the F test are listed next to each graph; factors for which multiple comparison post hoc testing was performed are displayed in italics. Segments and treatments marked with the same letter were not significantly different from each other when undergoing post hoc testing for multiple comparisons.