Statistical analysis
All data are expressed as mean ± SEM unless otherwise stated. Differences between the groups were assessed with a one‐way ANOVA. The effect of recombinant sHSPs and exogenous PKA on isolated, permeabilized cardiomyocytes was assessed with a two‐way ANOVA. A mixed‐model two‐way ANOVA was used to determine effects of independent variables (age, group) from the echocardiography data. A Bonferroni's post hoc test to correct for multiple comparisons was used for both one‐way and two‐way ANOVAs. All statistical analyses were performed using GraphPad Prism (v7.0, GraphPad, CA, USA) with 