Table 3.

Intraclass correlation coefficients and coefficient of variation of strain parameters, septal systolic rebound stretch (SRSsept), and the septal discoordination index (SDI) at each exercise intensity

	Baseline	30% VT	60% VT	90% VT	Recovery
SRSsept
Intraclass correlation coefficient
Test–retest	0.82	0.23	0.66	0.04	0.27
Intra-observer	0.95	0.86	0.88	0.89	0.97
Inter-observer	0.80	0.88	0.83	0.82	0.86
SDI
Intraclass correlation coefficient
Test–retest	0.50	0.32	0.64	0.16	0.77
Intra-observer	0.98	0.86	0.74	0.87	0.80
Inter-observer	0.66	0.92	0.72	0.76	0.75