Marian Tanofsky-Kraff1, Lauren B Shomaker2, Denise E Wilfley3, Jami F Young4, Tracy Sbrocco1, Mark Stephens5, Sheila M Brady2, Ovidiu Galescu2, Andrew Demidowich2, Cara H Olsen6, Merel Kozlosky7, James C Reynolds8, Jack A Yanovski2. 1. Department of Medical and Clinical Psychology. 2. Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health. 3. Department of Psychiatry, Washington University School of Medicine. 4. Department of Applied and Professional Psychology, Rutgers University. 5. Department of Family Medicine. 6. Department of Preventative Medicine and Biometrics, Uniformed Services University of the Health Sciences. 7. Department of Nutrition, Hatfield Clinical Research Center, National Institutes of Health. 8. Department of Nuclear Medicine, Hatfield Clinical Research Center, National Institutes of Health.
Abstract
OBJECTIVE:Interpersonal psychotherapy (IPT) prevents weight gain in adults with obesity and binge-eating-disorder, and is especially effective among those with increased psychosocial problems. However, IPT was not superior to health education (HE) to prevent excess weight gain at 1-year follow-up in 113 adolescent girls at high-risk for excess weight gain because of loss-of-control eating and high body mass index (BMI; kg/m2; Tanofsky-Kraff et al., 2014). METHOD: Participants from the original trial were recontacted 3 years later for assessment. At baseline, adolescent- and parent-reported social-adjustment problems and trait anxiety were evaluated. At baseline and follow-ups, BMIz and adiposity by dual-energy x-ray absorptiometry were obtained. RESULTS: Nearly 60% were reassessed at 3 years, with no group differences in participation (ps ≥ .70). Consistent with 1 year, there was no main effect of group on change in BMIz/adiposity (ps ≥ .18). In exploratory analyses, baseline social-adjustment problems and trait-anxiety moderated outcome (ps < .01). Among girls with high self-reported baseline social-adjustment problems or anxiety, IPT, compared to HE, was associated with the steepest declines in BMIz (p < .001). For adiposity, girls with high or low anxiety in HE and girls with low anxiety in IPT experienced gains (ps ≤ .03), while girls in IPT with high anxiety stabilized. Parent-reports yielded complementary findings. CONCLUSION: In obesity-prone adolescent girls, IPT was not superior to HE in preventing excess weight gain at 3 years. Consistent with theory, exploratory analyses suggested that IPT was associated with improvements in BMIz over 3 years among youth with high social-adjustment problems or trait anxiety. Future studies should test the efficacy of IPT for obesity prevention among at-risk girls with social-adjustment problems and/or anxiety. (PsycINFO Database Record (c) 2017 APA, all rights reserved).
RCT Entities:
OBJECTIVE: Interpersonal psychotherapy (IPT) prevents weight gain in adults with obesity and binge-eating-disorder, and is especially effective among those with increased psychosocial problems. However, IPT was not superior to health education (HE) to prevent excess weight gain at 1-year follow-up in 113 adolescent girls at high-risk for excess weight gain because of loss-of-control eating and high body mass index (BMI; kg/m2; Tanofsky-Kraff et al., 2014). METHOD:Participants from the original trial were recontacted 3 years later for assessment. At baseline, adolescent- and parent-reported social-adjustment problems and trait anxiety were evaluated. At baseline and follow-ups, BMIz and adiposity by dual-energy x-ray absorptiometry were obtained. RESULTS: Nearly 60% were reassessed at 3 years, with no group differences in participation (ps ≥ .70). Consistent with 1 year, there was no main effect of group on change in BMIz/adiposity (ps ≥ .18). In exploratory analyses, baseline social-adjustment problems and trait-anxiety moderated outcome (ps < .01). Among girls with high self-reported baseline social-adjustment problems or anxiety, IPT, compared to HE, was associated with the steepest declines in BMIz (p < .001). For adiposity, girls with high or low anxiety in HE and girls with low anxiety in IPT experienced gains (ps ≤ .03), while girls in IPT with high anxiety stabilized. Parent-reports yielded complementary findings. CONCLUSION: In obesity-prone adolescent girls, IPT was not superior to HE in preventing excess weight gain at 3 years. Consistent with theory, exploratory analyses suggested that IPT was associated with improvements in BMIz over 3 years among youth with high social-adjustment problems or trait anxiety. Future studies should test the efficacy of IPT for obesity prevention among at-risk girls with social-adjustment problems and/or anxiety. (PsycINFO Database Record (c) 2017 APA, all rights reserved).
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