Table 1.

Search strategy and results

Database	Initial number of hits with core keywords search	Attrition as database-specific filters was applied	Final number of hits after applying all filters
Scopus	845	Filter not used	845
ERIC	11 847	Limit to: academic journals—4879 Limit to: higher education, postsecondary education, case studies, intervention, program effectiveness—1789	1789
CINAHL plus	43 324	Limit to: academic journals—37 745 Limit to: cycling—2414 Limit to: adult—1359	1359
Cochrane library	39 218	Limit to: reviews—377	377
Digital Dissertations	Just over 1 million	Limit to: scholarly journals—326 607 Limit to: American J of PH, Social Research, Health Affairs—2938	2938
PsycINFO	56 448	Limit to: academic journals—47 213 Population—human—11 366 Subject—health, physical activity—196	196
Sports Discus	95 808	Limit to: academic journals—23 166 Subject thesaurus term—cycling, exercise, physical fitness, cyclists, prevention—1494 Subject—males, comparative studies, young adults, evaluation, adulthood, women, teenagers, research, middle age, case studies—615	615
Web of Science	Just over 1 million	Limit to: engineering, behavioural sciences, public environmental occupational health, sports sciences, healthcare sciences services, sociology—371 085 Research domains—restrict to behavioural sciences, public environmental occupational health, sports sciences, healthcare sciences services, sociology, life sciences, biomedicine other topics, social issues, social sciences other types—194 675 Research areas—restrict to behavioural sciences, public environmental occupational health, engineering, social sciences other topics, urban studies, transportation—144 459 Limit to: articles—125, 612 English—114 955 Limit to: transportation, urban studies—827	827
Total databases searched=8	Total initial hits=over 2 million	Total after applying filters=9825	Total imported to RefWorks=9825