Echocardiography: Systolic position of the left ventricular posterior wall outer contour, event h, related to event a (before atrial systole, a-h), event b (after atrial systole, b-h) and event e (at the start of posterior wall thickening, e-h).
| M-mode reg. in short axis | |||
| Person No. | a-h | b-h | e-h |
| 1 | -6 | -6 | -7 |
| 2 | -6 | -6 | -7 |
| 3 | -6 | -6 | -7 |
| 4 | -5 | -5 | -6 |
| 5 | -6 | -6 | -6 |
| 6 | -3 | -3 | -4 |
| 7 | -3 | -3 | -3 |
| 8 | -5 | -5 | -5 |
| 9 | -6 | -6 | -6 |
| m | -5.1 | -5.1 | -5.7 |
| +/- I | 1.0 | 1.0 | 1.2 |