Sunday, November 25, 2007

Internal Disinhibition Predicts Weight Regain Following Weight Loss and Weight Loss Maintenance

The disinhibition scale of the Eating Inventory predicts weight loss outcome. Exploratory factor analysis of the disinhibition scale was conducted on 286 participants in a behavioral weight loss trial (TRIM), and confirmatory factor analysis was conducted on 3345 members of the National Weight Control Registry (NWCR), a registry of successful weight loss maintainers.

In TRIM, internal disinhibition significantly predicted weight loss at 6 months (p = 0.03) and marginally significantly predicted weight loss at 18 months (p = 0.06), with higher levels of internal disinhibition at baseline predicting less weight loss; external disinhibition did not predict weight loss at any time-point. In NWCR, internal disinhibition significantly predicted one-year weight change (p = 0.001), while external disinhibition did not. These results suggest that it is the disinhibition of eating in response to internal cues that is associated with poorer long-term weight loss outcomes.

Niemeier et al. (2007)

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