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Figure 4 Mean value ± SEM of ejection fraction (%) measured at baseline, 3 min and peak exercise in the two study groups (squares = patients with hypertrophic cardiomyopathy [HCM] and a normal systolic blood pressure [BP] response to exercise; diamonds = patients with HCM and an abnormal systolic BP response to exercise). The p value reflects two-way analysis of variance for repeated measures. *p = 0.003 vs. HCM abnormal response, as tested by post-hoc analysis.