Table 1. Search quest.

Physical activity related search term: (((((((((((((((exercise) OR (exercise [MeSH Terms])) OR (exercise [Title/Abstract])) OR (exercise [Title])) OR (physical activity)) OR (physical activity [Title/Abstract])) OR (physical activity [Title])) OR (incidental physical activity)) OR (incidental physical activity [Title/Abstract])) OR (incidental physical activity [Title])) OR (aerobic fitness)) OR (aerobic fitness [Title/Abstract])) OR (aerobic fitness [Title])) OR (fitness)) OR (fitness [Title/Abstract])) OR (fitness [Title])

AND

Population: (((((((((((obesity [Title]) OR (obesity)) OR (obesity [Title/Abstract])) OR (obesity [MeSH Terms])) OR (overweight [Title])) OR (overweight)) OR (overweight [Title/Abstract])) OR (overweight [MeSH Terms])) OR (healthy people [Title/Abstract])) OR (healthy people [Title])) OR (older adults [Title])) OR (older adults [Title/Abstract])

AND

Heart rate variability related search term:

((((((((((((((cardiac autonomic function [Title/Abstract]) OR (cardiac autonomic function [Title])) OR (autonomic function [Title])) OR (autonomic function [Title/Abstract])) OR (autonomic nervous system [Title/Abstract])) OR (autonomic nervous system [Title])) OR (autonomic nervous system [MeSH Terms])) OR (autonomic nervous system)) OR (heart rate variability)) OR (heart rate variability [Title/Abstract])) OR (heart rate variability [Title])) OR (sympathetic function [Title])) OR (sympathetic function [Title/Abstract])) OR (parasympathetic function [Title/Abstract])) OR (parasympathetic function [Title])