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  • Body Shape Concerns in Beha...
    Olson, Kayloni; Giampa, Tiffany; Wing, Rena; Demos, Kathryn

    Obesity (Silver Spring, Md.), 11/2022, Letnik: 30
    Journal Article

    Background: Body shape concern (BSC; preoccupation with body shape) has been linked to variable weight loss in standard behavioral weight loss treatment (SBT) and degree of BSC may impact response to weight loss programs modified to enhance treatment outcomes. This secondary analysis examined the association of BSC with weight loss among women in a pilot study randomly assigned to 12-week Internet-delivered SBT, SBT modified to focus on negative consequences of unhealthy behaviors (PREVENT), or SBT modified to focus on positive consequences of healthy behaviors (PROMOTE). Methods: Women (n=82, 80% WHITE; BMI=33.3, SD=5.0) completed the Body Shape Questionnaire before randomization and were categorized based on established BSC clinical cutoffs (No BSC (20%), Low BSC (33%), Moderate BSC (32%), or High BSC (15%)). Percent weight loss (PWL) was calculated from baseline to 12-week (baseline carried forward). Due to the small sample descriptive analysis was used to evaluate mean values for PWL for each of the BSC levels by treatment conditions. Results: Women with No BSC had greater weight loss in PREVENT (-6.7%) than in SBT (-2.5%) or PROMOTE(-4.5%), as did those with Low BSC (PREVENT: -4.9% SBT:-2.8% PROMOTE: -2.9%) or Moderate BSC (PREVENT: -6.7%, SBT=-4.3% PROMOTE=-3.9%). However, women with High BSC did not experience enhanced weight loss in any of the conditions (PREVENT: -3.7%, SBT: -3.2%, PROMOTE: -3.9%). Conclusions: SBT modified to focus on the negative consequences of unhealthy behaviors (PREVENT) was associated with greater weight loss for women with No, Low, or Moderate BSC; with average PWL in PREVENT that approached or exceeded 5% which is widely accepted as clinically significant change. Women with High BSC did not exhibit improved PWL or reach the 5% clinical target in any condition. Consistent with precision medicine, BSC may have implications for treatment matching in SBT programs that have been modified to enhance the saliency of positive or negative effects of health behaviors.