Exercise prevents HFD-induced NAFLD via increasing lysosomal function. A–D) Protein levels of LAMP1 (A), LAMP2 (B), ATPase, H+ transporting, lysosomal V1 subunit E1 (C), and ATP6V0D1 (D) were quantified. E, F) CTSB and CTSD activities were determined. *P < 0.05, **P < 0.01 vs. control, #P < 0.05, ##P < 0.01 vs. HFD. (n = 10 for each group).