Saliva microbiota differs between children with low and high sedentary screen times

•193 school-aged children with low and 183 with high screen viewing (sitting) times.•Saliva microbiota diversity was higher in children with low screen times.•Microbiota composition differed between the screen time groups.•Ten taxonomic groups were differentially abundant between the screen time groups.•Five metabolic pathways were differentially present between the screen time groups.