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. 2017 Mar 28;136(1):24–34. doi: 10.1161/CIRCULATIONAHA.116.025856

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© 2017 The Authors.

Circulation is published on behalf of the American Heart Association, Inc., by Wolters Kluwer Health, Inc. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution, and reproduction in any medium, provided that the original work is properly cited.

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Figure 4. — Indexes of wave reflection and beat cycle physiology. Systemic hemodynamic augmentation index, time to the reflected wave, tension-time index, diastolic time fraction, left ventricular (LV) ejection time, and Buckberg index. GTN indicates nitroglycerin. *Statistical significance, baseline vs peak exercise, P<0.05. †Statistical significance, peak exercise vs 2 minutes after nitroglycerin administration, P<0.05. ‡Significant difference, peak exercise after nitroglycerin administration vs control.