Table 3 Percentage of slow-twitch type-I muscle fibers as a predictor of echocardiographic indices at follow-up.

LV end-diastolic diameter (mm/m²)

0.093 (0.024 to 0.162)

0.009

0.23

LV end-systolic diameter (mm/m²)

0.097 (0.039 to 0.156)

0.002

0.30

LV mean wall thickness (mm/m²)

-0.002 (-0.017 to 0.012)

0.768

Relative wall thickness

-0.002 (-0.003 to 0.000)

0.034

0.12

LV mass (g/m²)

-0.055 (-0.581 to 0.470)

0.833

Fractional shortening (%)

-0.150 (-0.240 to -0.059)

0.002

0.30