Figure 4From: Speckle tracking echocardiography in the diagnosis of early left ventricular systolic dysfunction in type II diabetic mice The graphs shows at 8 and 12 weeks of age, there was no significant difference in left ventricular radial strain (A) and circumferential strain (B) between db/db mice and age-matched controls (P > 0.05). At 16 weeks of age, radial strain (A) and circumferential strain (B) in db/db mice were lower than in control mice (P < 0.01). RS indicates radial strain; CS, circumferential strain; C57, non-diabetic C57BL/6 mice; db/db, db/db mice.Back to article page