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PICOS criteria for inclusion and exclusion of studies.
| Parameter | Defined criteria for the current study |
| P (population) | Adult patients with MAFLD |
| I (intervention) | Aerobic exercise |
| C (comparison) | Usual care or another type of intervention |
| O (outcomes) | Primary: changes in serum levels of liver enzymes, intrahepatic triglycerides Secondary: glucose metabolism, anthropometric changes |
| S (study design) | Randomized clinical trials |
