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Table 1 Ejection Fraction. Obesity may be associated with changes in cardiac structure and function. We found that even among subjects with normal (>60%) ejection fraction, myocardial contraction fraction, a geometry-independent volumetric measure of myocardial performance, is depressed in obese versus lean subjects.

From: 133 Obesity is associated with decreased myocardial contraction fraction despite preserved ejection fraction

EF Lean Men (n = 131) Lean Women (LW, n = 313) Obese Men (OM, n = 86) Obese Women (OW, n = 203)
mean ± SD 66.5 ± 4.4 69.2 ± 5.1 69.1 ± 5.6 70.4 ± 5.6
T test vs LW <0.0001 - - -
T test vs OM 0.00013 0.50 (NS) - -
T test vs OW <0.0001 0.020 0.083 (NS) -