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In the 32 subjects, peak LV twist is significantly correlated with the peak untwisting rate (A), and the circumferential-longitudinal (CL) systolic shear strain (associated with systolic twist) is significantly correlated with the corresponding diastolic shear strain rate (associated with untwisting rate) (B). The peak rate of untwisting has no significant correlation with end-systolic volume (C) or peak circumferential strain (D) with similar results for peak twist in E and F.
