title: Physical activity staging distribution: establishing a heuristic using multiple studies.
abstract: The purpose of this study was to identify the population prevalence across the stages of change (SoC) for regular physical activity and to establish the prevalence of people at risk. With support from the National Institutes of Health, the American Heart Association, and the Robert Wood Johnson Foundation, nine Behavior Change Consortium studies with a common physical activity SoC measure agreed to collaborate and share data. The distribution pattern identified in these predominantly reactively recruited studies was Precontemplation (PC) = 5% (+/- 10), Contemplation (C) = 10% (+/- 10), Preparation (P) = 40% (+/- 10), Action = 10% (+/- 10), and Maintenance = 35% (+/- 10). With reactively recruited studies, it can be anticipated that there will be a higher percentage of the sample that is ready to change and a greater percentage of currently active people compared to random representative samples. The at-risk stage distribution (i.e., those not at criteria or PC, C, and P) was approximately 10% PC, 20% C, and 70% P in specific samples and approximately 20% PC, 10% C, and 70% P in the clinical samples. Knowing SoC heuristics can inform public health practitioners and policymakers about the population's motivation for physical activity, help track changes over time, and assist in the allocation of resources.
authors.affiliation: University of Hawaii at Manoa, Honolulu, HI 96822, USA. cnigg@hawaii.edu
authors.forename: C
authors.initials: C
authors.lastname: Nigg
authors.forename: L
authors.initials: L
authors.lastname: Hellsten
authors.forename: G
authors.initials: G
authors.lastname: Norman
authors.forename: L
authors.initials: L
authors.lastname: Braun
authors.forename: R
authors.initials: R
authors.lastname: Breger
authors.forename: P
authors.initials: P
authors.lastname: Burbank
authors.forename: M
authors.initials: M
authors.lastname: Coday
authors.forename: D
authors.initials: D
authors.lastname: Elliot
authors.forename: C
authors.initials: C
authors.lastname: Garber
authors.forename: M
authors.initials: M
authors.lastname: Greaney
authors.forename: S
authors.initials: S
authors.lastname: Keteyian
authors.forename: F
authors.initials: F
authors.lastname: Lees
authors.forename: C
authors.initials: C
authors.lastname: Matthews
authors.forename: E
authors.initials: E
authors.lastname: Moe
authors.forename: B
authors.initials: B
authors.lastname: Resnick
authors.forename: D
authors.initials: D
authors.lastname: Riebe
authors.forename: J
authors.initials: J
authors.lastname: Rossi
authors.forename: D
authors.initials: D
authors.lastname: Toobert
authors.forename: T
authors.initials: T
authors.lastname: Wang
authors.forename: G
authors.initials: G
authors.lastname: Welk
authors.forename: G
authors.initials: G
authors.lastname: Williams
mesh_terms: D035841:Behavioral Research / Q000379:methods* / Q000592:standards*; D015438:Health Behavior; D006293:Health Promotion; D006801:Humans; D009043:Motor Activity