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A stage-targeted physical activity intervention among a predominantly African-American low-income primary care population
Whitehead D, Bodenlos JS, Cowles ML, Jones GN, Brantley PJ
American Journal of Health Promotion 2007 Jan-Feb;21(3):160-163
clinical trial
5/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

PURPOSE: To examine the efficacy of a stage-targeted physical activity intervention among low-income African-Americans. METHODS: 207 participants were randomly assigned to groups and administered baseline measures. Intervention participants were mailed stage-targeted physical activity information, whereas control participants received low-sodium diet brochures. Measures were readministered by phone 1 and 6 months later, with response rates of 69% and 46%, respectively. RESULTS: 69% of participants were African-American and 64% had a monthly household income of < $1,000. A doubly-multivariate analysis of variance indicated that intervention participants reported more physical activity than control participants at 1 month (F[1,204] = 4.03, p < 0.05). Unlike control participants, intervention participants reported significant stage progression at 1 month, according to a McNemar Chi2 test. Gains attenuated by 6 months. CONCLUSIONS: The current study supports the use of this intervention among low-income African-Americans. Limitations include use of self-report measures and small sample size.

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