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Research Project: Preventing the Development of Childhood Obesity

Location: Children's Nutrition Research Center

Title: Comparison of weight measures in Butterfly Girls, an obesity intervention trial for African American girls

item MUSAAD, SALMA - Children'S Nutrition Research Center (CNRC)
item CALLENDER, CHISHINGA - Children'S Nutrition Research Center (CNRC)
item Thompson, Deborah - Debbe

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/7/2020
Publication Date: 6/18/2020
Citation: Musaad, S., Callender, C., Thompson, D.J. 2020. Comparison of weight measures in Butterfly Girls, an obesity intervention trial for African American girls[abstract]. International Society of Behavioral Nutrition and Physical Activity (ISBNPA) Annual Conference (Virtual). June 15-25, 2020. Oral Presentation.

Interpretive Summary:

Technical Abstract: Obesity prevalence is greater in 6-11 year old non-Hispanic Black (NHB) girls. Risk factors include unhealthy eating and home media use. This study examined the association of diet diversity and body weight change in NHB girls and media use patterns. Examining these associations is highly innovative given the controversial evidence of diet diversity on child growth with limited knowledge in NHB girls. 8-10 year old NHB girls enrolled in a 6-month 3-group randomized controlled trial (intervention (I), comparison (C), wait-list control (WLC)) were observed over 3 timepoints: baseline, post 1 (3 mo), post 2 (6 mo). Height, weight, and 2 dietary recalls (Nutrient Data System for Research) were collected at each timepoint (weekday/weekend). Body mass index was expressed as Z-scores (BMIz) using CDC methods. Diet diversity was estimated from the recalls using serving counts of items within each food group (fruit, dairy (full fat (ff), not ff), vegetable, whole grain, protein/nuts, added sugars/candy) according to 2 methods: counts within food group, Simpson-Index (SI: proportion relative to number of foods within the group). Time child spent using media (TSM (hours/week)) (e.g., TV, videogames) was obtained via parent survey. Dietary and media variables were weighted by weekend/weekday. Mixed models tested the association of BMIZ with diet diversity measures, controlling for covariates (education, free/reduced lunch, day, randomization group and its interaction with age), with random intercept and slope. Models were tested with and without TSM and its interaction with diet. Child BMIz at baseline was 0.73+/-1.29. In the I group, SI for dairy (not ff) was lowest at post 2 (0.24+/-0.26) compared to baseline (0.31+/-0.28) and post1 (0.30+/-0.27) (P= 0.04). In mixed models, TSM predicted higher BMIz (beta=0.04 (Standard Error=0.01)) (P<0.03) irrespective of the diet measure. None of its interactions with diet measures were significant. Diet counts and SI were not associated with change in BMIz. Dietary diversity in NHB girls was not associated with BMIz. Findings are significant, suggesting that higher diet diversity does not equate with weight change among NHB girls, warranting preventive strategies that focus more on media use.