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Table 2 Values of longitudinal and circumferential strain and SR in adults and children.

From: A new 2D-based method for myocardial velocity strain and strain rate quantification in a normal adult and paediatric population: assessment of reference values

Apical 4 Chambers segmental mean Systolic Strain %
  Bas Sept Mid Sept Ap sept Ap lat Mid lat Bas Lat
Children -20.6 ± 4.4 -20.9 ± 3.9 -25.4 ± 6.1 -19.8 ± 5.8 -23.3 ± 4.2 -22.9 ± 3.4
Adults -15.8 ± 3.5 -17.7 ± 4.1 -24.0 ± 0.8 19.9 ± 4.82 -18.9 ± 4.9 -17.9 ± 5.2
P value 0.0002 0.0133 0.4664 0.4236 0.0052 0.0013
Global mean circumferential Systolic Strain % by sections    
  Mitral Mid Ventricular Apex    
Children -22 ± 4 -24 ± 6 -32 ± 7    
Adults -21 ± 6 -22 ± 5 -27 ± 6    
P value 0.5861 0.4032 0.05