Effect of inhibition of cardiac mtp and exercise training on cardiac function and Hand > mtpRNAi whole-body TG levels in Drosophila. (A–I) Under different treatments, cardiac function assays included HR, HP, AI, DI, SI, DD, SD, FS and FL. NFD + w1118, HFD + w1118, HFD + E+w1118, NFD + Hand > w1118, HFD + Hand > w1118, HFD + E + Hand > w1118, NFD + Hand > mtpRNAi, HFD + Hand > mtpRNAi, and HFD + E + Hand > mtpRNAi. Sample sizes N = 26, 28, 24, 27, 28, 19, 34, 22 and 22. All samples were virgin flies of 10 days. (J) Whole-body TG levels of Hand > mtpRNAi Drosophila. All samples were virgin flies of 10 days, N = 10, and measurements were repeated three times. Whole-body TG levels were significantly higher in Drosophila in the HFD + E group compared to the HFD group. One-way ANOVA was used to identify differences between the strains of Drosophila NFD, HFD and HFD + E. LSD was used for post hoc testing.