Document Type : Research articles
Authors
1 Department of Biochemistry and Diet Therapy, Faculty of Nutrition, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
2 Department of Biochemistry and Diet Therapy, Faculty of Nutrition, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran International Branch, Tabriz University of Medical Sciences, Tabriz, IR Iran
3 Faculty of Health, Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
Abstract
Background: The use of weight-loss dieting has always been overemphasized as the first modality to treat obesity. Success in weight loss is considered a major problem in obese individuals. The processes of behavior change have been used to facilitate intervention promoting change. Only a minority of studies have employed this construct for weight loss.
Objectives: The purpose of this study was to assess the effect of a balanced low-calorie diet with or without nutrition education on the weight loss and processes of change among obese women. Methods: In a randomized clinical trial, 90 apparently healthy obese women age 18 - 50 with body mass index (BMI) of 30 - 40 kg/m2 were recruited from the nutrition clinic in Ardabil, located in the northwest of Iran. Participants were assigned randomly to receive
a balanced low-calorie diet with or without nutrition education. Participants completed a processes of change questionnaire at baseline and at three and six months after intervention. A generalized linear model repeated measures analysis of variances was used to assess the time effect as well as the interaction between the time and the group effect.
Results: Significant differences were found in the time effect for weight (F = 12.64, df = 2, P < 0.001), BMI (F = 10.90, df = 2, P = 0.001), andcounterconditioning (F = 22.82, df = 2, P < 0.001), and helping relationships (F = 5.47, df = 2, P = 0.006), reinforcement management (F = 3.65, df = 2, P = 0.03), self-liberation (F = 5.05, df = 2, P = 0.008), stimulus control (F = 12.12, df = 2, P < 0.001), and substance abuse subscales (F = 6.72, df = 2, P = 0.002). Significant differences were shown in interaction time and group effect for weight (F = 5.69, df = 2, P = 0.011), BMI (F = 4.91, df = 2, P = 0.018) and counterconditioning (F = 5.11, df = 2, P = 0.008) and stimulus control (F = 5.50, df = 2, P = 0.006) subscales. Conclusions: The findings support the use of nutrition education for more weight loss and improvement in the counter condition- ing and stimulus control subscales among obese women attending the nutrition clinic. It seems that nutrition education should be considered important in effective weight-loss interventions.
Keywords
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