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The results of the families improving together (FIT) for weight loss randomized trial in overweight African American adolescents
Wilson DK, Sweeney AM, Van Horn ML, Kitzman H, Law LH, Loncar H, Kipp C, Brown A, Quattlebaum M, McDaniel T, St George SM, Prinz R, Resnicow K
Annals of Behavioral Medicine 2022 Oct;56(10):2102-2111
clinical trial
6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; 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*

BACKGROUND: Few intervention studies have integrated cultural tailoring, parenting, behavioral, and motivational strategies to address African American adolescent weight loss. PURPOSE: The families improving together (FIT) for weight loss trial was a randomized group cohort study testing the efficacy of a cultural tailoring, positive parenting, and motivational intervention for weight loss in overweight African American adolescents (N = 241 adolescent/caregiver dyads). METHODS: The trial tested an 8-week face-to-face group motivational plus family weight loss program (M plus FWL) compared with a comprehensive health education control program. Participants were then rerandomized to an 8-week tailored or control online program to test the added effects of the online intervention on reducing body mass index and improving physical activity (moderate-to-vigorous physical activity (MVPA), light physical activity (LPA)), and diet. RESULTS: There were no significant intervention effects for body mass index or diet. There was a significant effect of the group M plus FWL intervention on parent LPA at 16 weeks (B 33.017, SE 13.115, p = 0.012). Parents in the group M plus FWL intervention showed an increase in LPA, whereas parents in the comprehensive health education group showed a decrease in LPA. Secondary analyses using complier average causal effects showed a significant intervention effect at 16 weeks for parents on MVPA and a similar trend for adolescents. CONCLUSIONS: While the intervention showed some impact on physical activity, additional strategies are needed to impact weight loss among overweight African American adolescents.

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