Positive associations of exercise-related increase in cerebellum-FC (seed 1 and right IPL) and lexical characteristics during the phonemic fluency task in cognitively healthy older adults (Panel A, B, and C). Panel D shows a negative association of exercise-related increase in cerebellum-FC (seed 2 and bilateral precuneus) and decreased mean number of syllables during the phonemic fluency task in cognitively healthy older adults. Dotted curves indicate 95% confidence interval around the mean. Notes: PF, phonemic fluency task; S1, seed 1; S2, seed 2.