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Figure 5 Comparisons of parameters regarding left ventricular relaxation between patients with preserved systolic function (PSF) with or without inertia force and those with systolic dysfunction (SDF). (A, B) The time constant Tp from phase loops and the time constant Tw obtained by the method of Weiss et al. (18) were significantly greater in patients with SDF and with PSF without inertia force than in those with PSF with inertia force. (C) The peak negative dP/dt was significantly less in the first 2 groups than in the last group. *p < 0.001; p < 0.01; p < 0.05. Other abbreviations as in Figure 4.