Proteasomal activity and cardiac function in acute Cfz protocols. (A) Proteasomal activity in myocardial tissue in experimental protocols 2, 3, and 5A. (B) Proteasomal activity in PBMCs in experimental protocols 2, 3, and 5A. (C) Representative echocardiographic M-mode images of protocol 2 at baseline and end point. (D) Representative echocardiographic M-mode images of protocol 3 at baseline and end point. (E) FS% graph of protocol 2 (circles, individual values). (F) FS% graph of protocol 3 (circles, individual values). (G) Representative echocardiographic M-mode images of protocol 5A at baseline and end point. (H) FS% graph of protocol 5A (circles, individual values). **P < .01, ***P = .001, ****P < .001; n = 3-6 per group.