Body image change and improved eating self-regulation in a weight management intervention in women

Faculty of Human Kinetics, Technical University of Lisbon, Estrada da Costa, 1495-688 Cruz Quebrada, Portugal.
International Journal of Behavioral Nutrition and Physical Activity (Impact Factor: 3.68). 07/2011; 8:75. DOI: 10.1186/1479-5868-8-75
Source: PubMed

ABSTRACT Successful weight management involves the regulation of eating behavior. However, the specific mechanisms underlying its successful regulation remain unclear. This study examined one potential mechanism by testing a model in which improved body image mediated the effects of obesity treatment on eating self-regulation. Further, this study explored the role of different body image components.
Participants were 239 overweight women (age: 37.6 ± 7.1 yr; BMI: 31.5 ± 4.1 kg/m²) engaged in a 12-month behavioral weight management program, which included a body image module. Self-reported measures were used to assess evaluative and investment body image, and eating behavior. Measurements occurred at baseline and at 12 months. Baseline-residualized scores were calculated to report change in the dependent variables. The model was tested using partial least squares analysis.
The model explained 18-44% of the variance in the dependent variables. Treatment significantly improved both body image components, particularly by decreasing its investment component (f² = .32 vs. f² = .22). Eating behavior was positively predicted by investment body image change (p < .001) and to a lesser extent by evaluative body image (p < .05). Treatment had significant effects on 12-month eating behavior change, which were fully mediated by investment and partially mediated by evaluative body image (effect ratios: .68 and .22, respectively).
Results suggest that improving body image, particularly by reducing its salience in one's personal life, might play a role in enhancing eating self-regulation during weight control. Accordingly, future weight loss interventions could benefit from proactively addressing body image-related issues as part of their protocols.

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Available from: Pedro Teixeira, Aug 28, 2015
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    • "Dieting is more frequent among women than among men [15], who tend to practice physical exercise rather than diet to change the look of their bodies and to lose weight [16,17]. Moreover, improving body image, particularly by reducing its importance in one’s personal life, plays a role in enhancing eating self-regulation during weight control in women [18]. "
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    • "A recent study showed that weight loss maintainers had higher levels of dietary restraint and physical activity as well as lower levels of dietary disinhibition and TV viewing than treatment-seeking obese persons (Phelan et al., 2009). Among other variables, eating disinhibition, cognitive restraint, and perceived hunger are commonly used constructs for the evaluation of eating self-regulation in the context of obesity and weight control (Carraça et al., 2011; Elfhag & Rossner, 2005; Teixeira et al., 2005). Eating disinhibition is associated with a higher body mass index, less healthful food choices, lower self-esteem, low physical activity and poor psychological health (Bryant et al., 2008). "
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    • "New research emphasizes the importance of a positive body image for maintaining health behaviors. A 12-month weight management intervention that included a body-image educational component resulted in improvements in body image among participants [87]. The authors further reported that having a more positive body image improved eating self-regulation and behavior. "
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