Endurance Exercise for Problem Drinking

This randomized study will examine whether a 12-week supervised home-based endurance exercise program can reduce alcohol use and alcohol craving in adults with alcohol use disorder (AUD) and alcohol-related liver disease (ALD). Thirty participants will be assigned in a 1:1 ratio to endurance exercise plus standard of care or standard of care alone. Participants in the exercise group will cycle at home three days per week for approximately 60 minutes per session with remote supervision. The study will also evaluate effects of exercise on FGF21, liver injury markers, exercise capacity, physical function, body composition, fatigue, skeletal muscle and mitochondrial function, and exploratory molecular and microbiome measures. The investigators hypothesize that endurance exercise will reduce alcohol use and craving while improving liver and skeletal muscle outcomes, potentially through an FGF21-related mechanism.