MS(N=19) Diabetes(N=19) Controls(N=20)

Strain Rate imaging

Basal

Σ (%) 21.2 ± 6.27 22.4 ± 8.1 23.1 ± 5.4
SR (sec−1) 1.84 ± 0.30 1.63 ± 0.42 1.70 ± 0.26

High dose dobutamine

Σ (%) 22.9 ± 4.13 23.5 ± 6.6 25.5 ± 3.17
SR (sec−1) 2.44 ± 0.22* 2.70 ± 0.53* 2.80 ± 0.32*

∆ Stress

Σ (%) +1.7 ± 2.1 (+8%) +1.1 ± 1.3 (+5%) +2.4 ± 2.2 (+10%)
SR (sec−1) 0.59 ± 0.29(+35%)* 1.07 ± 0.44(+70%)* 1.11 ± 0.43(+69%)*
Data are expressed as mean ± SD
Abbreviations: SR: Strain Rate; Σ Strain. *P < 0.001 vs MS
Table 3: Longitudinal Σ (%) and SR (s-1).