Time points

Cases

LVID (mm)

LVEF (%)

Tei index

50 d exposure to high altitude

96

47.21 ± 3.58

48.71 ± 6.81

0.49 ± 0.05

12 h after return to low altitude

96

46.82 ± 3.37

55.87 ± 6.07⁽¹⁾⁽²⁾

0.39 ± 0.05⁽¹⁾

15 d after return to low altitude

96

47.12 ± 3.46

63.50 ± 4.45⁽¹⁾⁽²⁾

0.31 ± 0.04⁽¹⁾⁽²⁾

30 d after return to low altitude

96

46.78 ± 3.24

63.96 ± 4.11⁽¹⁾⁽²⁾

0.30 ± 0.03⁽¹⁾⁽²⁾

Plain control

50

46.52 ± 3.49

64.73 ± 4.38⁽¹⁾

0.31 ± 0.03⁽¹⁾⁽²⁾