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Attenuation of myocardial ischemia with repeated exercise in subjects with chronic stable angina

Relation to myocardial contractility, intensity of exercise and the adenosine triphosphate–sensitive potassium channel

^a Quebec Heart Institute/Laval Hospital, Laval University, Ste-Foy, Quebec, Canada

View larger version (17K): [in a new window]   Figure 1 Ischemic thresholds (heart rate x systolic blood pressure at 1-mm STD) in exercises (Ex) 1 and 2 are plotted for each subject in the three study groups. Vertical bars display means and SDs.

View larger version (19K): [in a new window]   Figure 2 Maximum (Max) STD equivalent in millimeters plotted for each subject in whom it could be measured in exercises (Ex) 1 and 2 in the three study groups. See text for definition of this parameter. Vertical bars display means and SDs.

View larger version (14K): [in a new window]   Figure 3 Echocardiographic LV wall motion score indexes (means and SDs) at baselines (Rest) and immediately following each exericse (Ex) in groups I and II.