Table 1.

Average maximum and minimum mid systolic and peak systolic strain rate and end systolic strain.

	Mid syst. strain rate (s-1)			Peak syst. strain rate (s-1)			End syst. strain (%)
	Max.	Min.	Diff.	Max.	Min.	Diff.	Max.	Min.	Diff.
Controls:	-0.01 (0.16)	-1.21 (0.27)	-1.20 (0.35)	-0.89 (0.77)	-1.11 (0.70)	-0,21 (1.31)	0% (3)	-22% (3)	-22% (5)
Patients:	0.05 (0.17)	-1.51 (0.37)	-1.36 (0.39)	0.02 (0.16)	-1.66 (0.36)	-1.68 (0.36)	5% (7)	-25% (4)	-30% (9)
P:	NS	NS	NS	0.03	NS	0.04	NS	NS	NS

Measurements made in points identified as max and min. mid systolic strain by bull's eye (standard deviations in parentheses). In systole, the deformation is shortening, i.e. negative values, so the lowest negative value indicates most deformation, i.e. highest contractility.