Changes in self-efficacy and dietary adherence: the impact on weight loss in the PREFER study.
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| Title: | Changes in self-efficacy and dietary adherence: the impact on weight loss in the PREFER study. |
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| Authors: | Warziski MT (AUTHOR), Sereika SM (AUTHOR), Styn MA (AUTHOR), Music E (AUTHOR), Burke LE (AUTHOR) |
| Source: | Journal of Behavioral Medicine. Feb2008, Vol. 31 Issue 1, p81-92. 12p. |
| Subjects: | Weight loss, Self-efficacy, Obesity, Diet, Body weight, Eating disorders |
| Abstract: | Findings from studies examining self-efficacy and its relationship to weight loss have been inconsistent. We examined self-efficacy specific to changing eating behaviors in the PREFER trial, an 18-month behavioral weight-loss study, to determine if self-efficacy and dietary adherence were associated with weight change, and what impact self-efficacy had on weight change after controlling for adherence. Measurements included the weight efficacy lifestyle (WEL) questionnaire, body weight, self-reported fat gram intake, kilocalorie intake, and adherence to kilocalorie and fat gram goals at baseline, 6, 12, and 18 months. The sample (N = 170) was 88.2% female and 70.0% Caucasian; the mean age was 44.1 years (SD = 8.8). Mean weight loss at 18 months was 4.64% (SD = 6.24) of baseline body weight and the mean increase in self-efficacy was 11.70% (SD = 38.61). Self-efficacy improved significantly over time (p = 0.04) and was associated with weight loss (p = 0.02). Adherence to the fat gram goal was associated with weight loss (p = 0.0003), and self-efficacy remained associated with weight loss after controlling for fat gram adherence (p = 0.0001). Consistent with self-efficacy theory, improvement in self-efficacy over time supported greater weight loss. Adherence to the fat gram goal also influenced weight loss. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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