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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: J Mol Cell Cardiol. 2015 Dec 3;90:74–83. doi: 10.1016/j.yjmcc.2015.12.001

Table 3.

Average long-axis (LAX) systolic and diastolic strain echocardiographic characteristics.

Baseline
Week 1
Week 3
Week 6
Control Diabetic Control Diabetic Control Diabetic Control Diabetic
LAX strain measurements in systole
Longitudinal strain (%) − 20.2 ± 0.9   − 21.4 ± 2.6 − 17.9 ± 0.6 − 16.7 ± 0.9 − 19.3 ± 1.0 − 18.5 ± 0.3 − 18.4 ± 1.2 − 18.7 ± 1.0
Longitudinal SR (1/s)   − 8.3 ± 0.6     − 7.5 ± 0.3   − 7.1 ± 0.3   − 6.7 ± 0.2   − 8.3 ± 0.3   − 6.8 ± 0.1*   − 8.5 ± 0.6   − 6.8 ± 0.4*
Longitudinal velocity (cm/s)      0.9 ± 0.06        0.9 ± 0.08      0.8 ± 0.04      0.9 ± 0.03      1.0 ± 0.05      0.9 ± 0.01      0.9 ± 0.05      0.9 ± 0.05
Longitudinal displacement (mm)      0.2 ± 0.02        0.2 ± 0.03      0.2 ± 0.01      0.2 ± 0.01      0.2 ± 0.02      0.2 ± 0.01      0.2 ± 0.02      0.2 ± 0.03
Radial strain (%)    28.8 ± 2.4      26.9 ± 3.0    27.8 ± 1.2    22.0 ± 1.1*    30.1 ± 2.0    24.7 ± 1.0*    27.7 ± 2.0    22.0 ± 0.6*
Radial SR (1/s)      8.6 ± 0.8        8.1 ± 0.4      8.1 ± 0.2      6.7 ± 0.2*      8.6 ± 0.4      6.9 ± 0.3*      7.6 ± 0.2      6.3 ± 0.3*
Radial velocity (cm/s)      1.5 ± 0.09        1.5 ± 0.1      1.3 ± 0.04      1.1 ± 0.04*      1.5 ± 0.08      1.2 ± 0.05*      1.4 ± 0.01      1.2 ± 0.05*
Radial displacement (mm)      0.5 ± 0.02        0.5 ± 0.04      0.5 ± 0.01      0.4 ± 0.01*      0.5 ± 0.02      0.5 ± 0.01      0.5 ± 0.01      0.4 ± 0.02
Long-axis strain measurements in diastole
Longitudinal strain (%)      2.3 ± 0.4        2.4 ± 1.0      1.3 ± .02      1.3 ± 0.3      1.1 ± 0.2      1.6 ± 0.3      1.1 ± 0.2      0.9 ± 0.1
Longitudinal SR (1/s)    11.4 ± 0.7      11.5 ± 1.0      7.3 ± 0.2      7.9 ± 0.6      8.9 ± 0.6      9.8 ± 0.6      8.8 ± 0.6    10.0 ± 1.0
Longitudinal velocity (cm/s)   − 1.0 ± 0.08     − 1.1 ± 0.05   − 0.9 ± 0.01   − 1.0 ± 0.06   − 1.0 ± 0.05   − 0.9 ± 0.08   − 0.9 ± 0.06   − 1.0 ± 0.05
Longitudinal displacement (mm) − 0.03 ± 0.01   − 0.04 ± 0.008 − 0.03 ± 0.004 − 0.04 ± 0.008 − 0.02 ± 0.005 − 0.04 ± 0.005 − 0.02 ± 0.006 − 0.04 ± 0.008
Radial strain (%)   − 2.8 ± 0.4     − 2.4 ± 0.5   − 1.6 ± 0.1   − 2.1 ± 0.3   − 1.6 ± 0.3   − 2.0 ± 0.3   − 2.1 ± 0.6   − 1.9 ± 0.4
Radial SR (1/s) − 10.9 ± 1.1   − 10.5 ± 0.5   − 9.9 ± 0.6   − 9.1 ± 0.7 − 10.2 ± 0.6 − 10.2 ± 0.6 − 10.0 ± 0.4 − 10.3 ± 0.5
Radial velocity (cm/s)   − 2.0 ± 0.1     − 2.0 ± 0.1   − 1.5 ± 0.04   − 1.4 ± 0.08   − 1.6 ± 0.1   − 1.6 ± 0.1   − 1.6 ± 0.05   − 1.6 ± 0.09
Radial displacement (mm) − 0.01 ± 0.002 − 0.008 ± 0.002 − 0.01 ± 0.001 − 0.01 ± 0.002 − 0.02 ± 0.003 − 0.01 ± 0.003 − 0.02 ± 0.004 − 0.02 ± 0.003

Values are shown as means ± SEM. SR = strain rate.

*

P< 0.05 Control versus Diabetic in a given week. 2-tailed Student’s t test. Control n = 8, Diabetic n = 8.