The relative decrease of longitudinal, circumferential, and radial end-systolic strains after induction of tachycardia induced cardiomyopathy (TIC) at base, middle, and apex of the left ventricle. All strains decreased significantly, with the decrease of strains significantly more pronounced as one moved from the base towards the apex (p <0.001). Relative decrease significantly varied between various strains (p < 0.05) and was most pronounced for radial strain. Error bars represent SEM. TIC: tachycardia induced cardiomyopathy.