Segmental 2DST analyses of left ventricular long-axis recordings.A: εL, longitudinal peak strain. B: SRL-sys, longitudinal peak systolic strain rate. C: SRL-E, longitudinal peak early-diastolic strain rate. D: SRL-A, longitudinal peak late-diastolic strain rate. E: DL, longitudinal peak displacement. F: DT, transverse peak displacement. 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.