Table 4.

The effects of interval and continuous exercise regimens on RV mechanics in HE.

	HIIT		MICT		CTL
	Pre	Post	Pre	Post	Pre	Post
RV strains and strain rates at rest and during exercise under 12% hypoxic exposure
Radial Strain (%)
Rt	35.3 ± 2.5	26.7 ± 2.0 *	34.8 ± 2.7	31.8 ± 2.1	35.8 ± 3.0	34.7 ± 4.2
Ex	23.4 ± 2.2 **	18.5 ± 2.1 *,**	22.4 ± 3.9 **	21.6 ± 2.7 **	22.0 ± 7.6 **	20.0 ± 3.6 **
Radial Strain Rate (s-1)
RV in Sys
Rt	2.2 ± 0.19	2.78 ± 0.14 *, ***, #	2.15 ± 0.20	2.27 ± 0.12	2.12 ± 0.35	2.20 ± 0.31
Ex	2.13 ± 0.11	2.55 ± 0.18 *, ***, #	2.01 ± 0.24	2.21 ± 0.18	1.95 ± 0.20	2.02 ± 0.16
RV in Dia
Rt	− 1.47 ± 0.22	− 2.63 ± 0.12 *, ***, #	− 1.54 ± 0.12	− 2.36 ± 0.18 *, #	− 1.53 ± 0.16	− 1.45 ± 0.2
Ex	− 2.06 ± 0.16 **	− 1.78 ± 0.21 **	− 1.98 ± 0.22 **	− 2.02 ± 0.18 **	− 2.02 ± 0.11 **	− 1.99 ± 0.24 **
Longitudinal Strain (%)
Rt	− 19.54 ± 1.28	− 18.12 ± 1.02	− 18.13 ± 0.95	− 19.46 ± 0.93	− 18.61 ± 1.47	− 19.1 ± 1.45
Ex	− 25.58 ± 1.66 **	− 23.47 ± 3.31 **	− 23.3 ± 1.36 **	− 23.16 ± 1.68 **	− 24.39 ± 2.01 **	− 24.79 ± 1.27 **
Longitudinal Strain Rate (s-1)
RV in Sys
Rt	− 1.16 ± 0.06	− 1.10 ± 0.06	− 1.12 ± 0.1	− 1.17 ± 0.10	− 1.16 ± 0.09	− 1.17 ± 0.09
Ex	− 1.74 ± 0.22 **	− 1.72 ± 0.26 **	− 1.78 ± 0.12 **	− 1.70 ± 0.14 **	− 1.77 ± 0.16 **	− 1.82 ± 0.15 **
RV in Dia
Rt	1.30 ± 0.10	1.25 ± 0.08	1.32 ± 0.11	1.27 ± 0.12	1.31 ± 0.13	1.30 ± 0.14
Ex	2.33 ± 0.18 **	2.19 ± 0.24 **	2.33 ± 0.16 **	2.17 ± 0.07 **	2.32 ± 0.13 **	2.34 ± 0.15 **

Values were mean ± SEM. Values were mean ± SEM. RV in Sys: when RV in systolic phase; RV in Dia: when RV in diastolic phase. *P < 0.05, Pre- vs Post- ; **P < 0.05, Rt vs Ex; ***P < 0.05, HIIT vs MICT; #p < 0.05, HIIT or MICT vs CTL.