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Table 4 Global left ventricular ɛ, SR and twist

From: Seasonal variation of cardiac structure and function in the elite rugby football league athlete

 

ENDPRE

Mean ± SD

(Range)

MIDCOMP

Mean ± SD

(Range)

ENDCOMP

Mean ± SD

(Range)

ENDOFF

Mean ± SD

(Range)

LV Longitudinal

    

 Global ɛ (%)

− 19.2 ± 2.2

(− 16.3 to − 23.7)

− 19.5 ± 1.3

(− 16.5 to − 21.4)

− 19.4 ± 1.4

(− 16.0 to–21.6)

− 19.4 ± 1.2

(− 17.5 to − 21.6)

 Time to Peak ɛ (s)

0.37 ± 0.03

(0.32–0.43)

0.37 ± 0.03

(0.33–0.41)

0.38 ± 0.02

(0.33–0.41)

0.37 ± 0.03

(0.33–0.44)

 SRS (s−1)

− 0.94 ± 0.13

(− 0.72 to − 1.31)

− 0.96 ± 0.10

(− 0.81 to − 1.19)

− 0.93 ± 0.08

(− 0.80 to − 1.12)

− 0.94 ± 0.09

(− 0.69 to − 1.12)

 SRE (s−1)

1.36 ± 0.18

(1.01–1.63)

1.43 ± 0.14

(1.20–1.71)

1.44 ± 0.14

(1.11–1.66)

1.40 ± 0.15

(1.09–1.62)

 SRA (s−1)

0.56 ± 0.10

(0.37–0.80)

0.58 ± 0.14

(0.36–0.93)

0.55 ± 0.09

(0.36–0.75)

0.59 ± 0.09

(0.41–0.79)

LV Circumferential

    

 Global ɛ (%)

− 19.1 ± 2.0

(− 16.6 to − 23.3)

− 18.3 ± 1.4

(− 16.1 to − 21.2)

− 18.1 ± 2.1

(− 14.4 to − 21.4)

− 17.5 ± 2.09

(− 14.0 to − 20.4)

 Time to Peak ɛ (s)

0.37 ± 0.02

(0.31–0.40

0.37 ± 0.03

(0.32–0.42)

0.39 ± 0.04

(0.33–0.48)

0.38 ± 0.03

(0.32–0.44)

 SRS (s−1)

− 1.08 ± 0.13

(− 0.90 to − 1.34)

− 1.04 ± 0.13

(− 0.84 to–1.41)

− 1.01 ± 0.11

(− 0.82 to − 1.23)

− 0.98 ± 0.13

(− 0.78 to − 1.19)

 SRE (s−1)

1.56 ± 0.31

(0.86–2.34)

1.46 ± 0.24

(1.02–1.94)

1.42 ± 0.19

(0.98–1.72)

1.36 ± 0.23

(0.97–1.95)

 SRA (s−1)

0.44 ± 0.14

(0.29–0.77)

0.38 ± 0.11

(0.22–0.72)

0.37 ± 0.11

(0.19–0.61)

0.40 ± 0.12

(0.18–0.59)

LV Radial

    

 Global ɛ (%)

46.5 ± 12.8

(27.1–70.2)

49.7 ± 10.3

(34.6–68.4)

51.5 ± 11.5

(31.7–76.7)

45.6 ± 10.9

(28.3–75.0)

 Time to Peak ɛ (s)

0.41 ± 0.03

(0.34–0.48)

0.42 ± 0.03

(0.36–0.47)

0.42 ± 0.04

(0.35–0.49)

0.41 ± 0.04

(0.36–0.49)

 SRS (s−1)

1.51 ± 0.23

(1.11–1.98)

1.55 ± 0.24

(1.06–2.05)

1.60 ± 0.26

(1.29–2.40)

1.54 ± 0.22

(1.22–1.97)

 SRE (s−1)

− 2.05 ± 0.61

(− 0.99 to − 4.08)

− 2.04 ± 0.33

(− 1.46 to–2.86)

− 2.08 ± 0.47

(− 1.29 to − 2.96)

− 1.97 ± 0.33

(− 1.41 to − 2.59)

 SRA (s−1)

− 0.85 ± 0.26

(− 0.53 to − 1.30)

− 0.96 ± 0.42

(− 1.74 to–0.17)

− 0.93 ± 0.36

(− 0.42 to − 1.92)

− 0.90 ± 0.25

(− 0.47 to − 1.50)

LV rotation

    

 Basal rotation (o)

− 7.08 ± 3.05

(− 0.29 to − 11.7)

− 6.81 ± 2.50

(− 3.18 to − 13.42)

− 6.78 ± 3.22

(− 0.08 to − 13.75)

− 6.29 ± 1.82

(− 2.97 to − 8.61)

 Apical rotation (o)

9.83 ± 3.95*†∫

(3.35–16.79)

6.13 ± 2.84*

(1.88–11.59)

5.84 ± 3.15

(0.79–11.52)

6.60 ± 3.07

(2.09–13.98)

 Twist (o)

16.55 ± 4.71*†∫

(6.49–22.63)

12.62 ± 3.97*

(3.66–19.9)

12.12 ± 4.53

(5.55–19.51)

12.35 ± 3.45

(7.38–19.43)

  1. *Denotes P < 0.05 between ENDPRE and MIDCOMP, denotes P < 0.05 between ENDPRE and ENDCOMP, denotes P < 0.05 between ENDPRE and ENDOFF; ɛ: strain; SRS: systolic strain rate; SRE: early diastolic strain rate; SRA: late diastolic strain rate