Poster Topical Area: Obesity
Location: Hall D
Poster Board Number: 675
Objectives: Power of Food Scale (PFS) measures influence of food on appetite at 3 food proximity levels (available, PFS-FA; present, PFS-FP; tasted, PFS-FT). This study examined if emotional factors moderate the relationship between baseline PFS scores (PFS-FA; PFS-FP; PFS-FT; mean PFS, PFS-M) and weight (BW), fat mass (FM); and change in weight (∆BW), and fat mass (∆FM).
Methods: Thirty-two subjects (19-60 yrs; 30-39.9 kg/m2) underwent a 3-week dietary intervention (1120 kcal/d). At baseline, depression and anxiety were assessed via Hospital Anxiety and Depression Scale (HADS-A; HADS-D). BW, FM, and PFS were measured at baseline and post-intervention. Linear regression analyses examined interactions between HADS-A, HADS-D, and PFS (PFS-FA, PFS-FP, PFS-FT, PFS-M) related to BW, FM, ∆BW, and ∆FM. Simple slope analyses were conducted in models with significant interactions.
Results: In all models, HADS-A, HADS-D and PFS subscales did not predict BW, FM, ∆BW, or ∆FM. HADS-D but had significant interaction with PFS-FA, PFS-FT, and PFS-M in models predicting ∆FM (P= .04, P= .04, P= .02 respectively). No other models showed significant interactions between HADS-A, HADS-D and PFS subscales. Simple slope analysis was conducted for PFS-FA, PFS-FT, and PFS-M at three levels of HADS-D: 1 standard deviation above the mean, at the mean, and 1 standard deviation below the mean. PFS-FA, PFA-FT, and PFS-M were significantly related to ∆FM when HADS-D was 1 standard deviation above the mean (β= .835, P= .008; β= .825, P=.006; β= .818, P=0.005 respectively) and at the mean (β= .417, P= .031; β= .407, P=.029; β= .373, P=0.042 respectively). PFS-FA, PFA-FT, and PFS-M were not significantly related to ∆FM when HADS-D was 1 standard deviation below the mean (β= -.001, P= .996; β= -.012, P=.961; β= -.073, P=0.779 respectively).
Conclusions: Self-reported anxiety, depression and PFS scores did not predict baseline BW or FM or change during treatment. However, self-reported depression symptoms moderated the relationship between several PFS scores and fat mass change. This suggests that for people with average or above average depression symptoms undergoing weight loss treatment, the food abundant environment may be a particularly influential in terms of reducing body fat.
Texas Tech University