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Table 2 Left ventricular (LV) rotation and torsion characteristics of subgroups according to percentage predicted exercise capacity

From: Left ventricular torsional dynamics post exercise for LV diastolic function assessment

Tertiles 1 (n = 28) 2 (n = 30) 3 (n = 30) ANOVA
Predicted exercise capacity Predicted exercise capacity Predicted exercise capacity
≤100% 101-125% ≥126%
LV Torsion at Rest (°/cm) 1.2 ± 0.6 1.2 ± 0.5 1.3 ± 0.5 NS
LV Torsion post exercise (°/cm) 1.0 ± 0.5 1.4 ± 0.6 1.5 ± 0.6 p=0.006
LV Torsion change (Δ) -0.13 ± 0.7 0.16 ± 0.6 0.17 ± 0.6 NS
LV apex rotation at Rest (°) 3.9 ± 3.0 3.2 ± 1.8 3.8 ± 3.1 NS
LV apex rotation post exercise (°) 3.5 ± 2.7 5.1 ± 3.1 5.8 ± 4.2 p=0.04
LV apex rotation change (Δ) -0.4 ± 4.0 1.6 ± 3.4 1.8 ± 3.4 p=0.04
LV apex rotation velocity at Rest (°/s) 48 ± 28 38 ± 22 52 ± 30 NS
LV apex rotation velocity post exercise (°/s) 53 ± 32 75 ± 37 69 ± 39 NS
LV apex rotation velocity change (Δ) 5 ± 39 35 ± 44 15 ± 48 NS
LV base rotation at Rest (°) 5.0 ± 2.4 5.3 ± 3.3 6.3 ± 2.9 NS
LV base rotation post exercise (°) 4.5 ± 2.7 4.9 ± 2.7 5.9 ± 3 NS
LV base rotation change (Δ) -0.6 ± 3.3 -0.5 ± 3.7 -0.5 ± 4.3 NS
LV base rotation velocity at Rest (°/s) 69 ± 36 42 ± 28 55 ± 28 NS
LV base rotation velocity post exercise (°/s) 61 ± 30 65 ± 30 71 ± 34 NS
LV base rotation velocity change (Δ) -8.3 ± 40 25 ± 33 14 ± 47 NS