Regional myocardial function as peak Eulerian circumferential strain at the site of injection improved with MSCs ( -4.9 ; 95 % CI , -13.3 to 3.5 ; within-group repeated measures , P = .03 ) but not BMCs ( -2.1 ; 95 % CI , -5.5 to 1.3 ; P = .21 ) or placebo ( -0.03 ; 95 % CI , -1.9 to 1.9 ; P = .14 ) .