RORA and sarcopenia: In contrast, sarcopenia, a condition with diminished skeletal muscle mass and strength, results from selective atrophy of type 2b fibres.S4 Sarcopenia is also considered as a negative prognostic factor in patients with NAFLD.S5,S6 Interestingly, the level of RORα expression was higher in type 2b than in type 2a muscle fibres in normal‐diet‐fed mice (Figure S9).