Table 3.

Median (IQR) strain before and after the 15-min break at every site and results of the ICC (95% CI) and CoV (± sd) to display test-retest reproducibility

		Median (IQR) strain	p	ICC (95%CI)	p	CoV (± sd)
Site I	LV-GLS	− 20.1 (− 20.9 to − 18.3)	0.020	0.63 (0.21 to 0.86)	0.002	0.06 (± 0.05)
		− 19.4 (− 20.6 to − 17.8)
	LV-GCS	− 19.0 (− 21.1 to − 18.3)	0.950	0.82 (0.53 to 0.93)	< 0.001	0.05 (± 0.03)
		− 19.4 (− 21.0 to − 18.3)
Site II	LV-GLS	− 19.9 (− 21.3 to − 16.8)	0.347	0.97 (0.90 to 0.99)	< 0.001	0.03 (± 0.02)
		− 20.1 (− 21.2 to − 17.0)
	LV-GCS	− 17.4 (− 19.0 to − 16.4)	0.307	0.80 (0.47 to 0.94)	< 0.001	0.04 (± 0.04)
		− 17.3 (− 18.6 to − 16.7)
Site III	LV-GLS	− 18.8 (− 20.2 to − 15.1)	0.977	0.82 (0.54 to 0.94)	< 0.001	0.09 (± 0.07)
		− 18.4 (− 19.8 to − 16.2)
	LV-GCS	− 17.2 (− 18.6 to − 16.3)	0.056	0.69 (0.29 to 0.88)	0.001	0.07 (± 0.05)
		− 18.5 (− 19.5 to − 16.5)