Stress-strain relations. Regional [myocardial infarction (MI) region, border zone, and remote region] myocardial stress-strain relations were computed at early and end diastole in the circumferential and longitudinal directions at baseline and at 3, 14, and 28 days post-MI. *P < 0.05 vs. the respective baseline stress or strain value (n = 8, one-way ANOVA with post hoc least-significant-difference comparisons).