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Nutrición Hospitalaria

versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611

Resumen

TARRAGA MARCOS, M.ª Loreto et al. Efficacy of motivational interventions in the treatment of overweight and obesity. Nutr. Hosp. [online]. 2014, vol.30, n.4, pp.741-748. ISSN 1699-5198.  http://dx.doi.org/10.3305/nh.2014.30.4.7704.

Introduction and Objectives: Changing unhealthy behaviors: Diet and physical activity are key to treating obesity. The objective of this study is to determine whether an intervention group motivational intervention group by nurses trained by expert psychologist, complementary to the usual intervention is more effective than the latter in the treatment of overweight and obesity in relation to weight reduction percentage and the persistence over time of the reduction achieved. Methods: A multicenter randomized clinical trial of intervention in overweight and obese patients. Randomization of the intervention by health areas (ZBS). Two groups located in different centers separated, one of which will receive motivational intervention group (study group) and the other routine monitoring (control group) were established. Variables: Sociodemographic, results: percentage of patients reduced by 5% of its weight and maintenance over time, anthropometric assessment, assessment of cardiovascular risk factors and laboratory data. Results: 696 patients were studied; 377 control and 319 study group. In both groups the weight down in each of the visits. The mean percentage weight reduction stood at 1% for the control group and 2.5% in the intervention group (p-value = 0.009). 55.8% of patients reduced the weight in the control group and 65.5% of the study group (p-value = 0.0391). 18.1% of the control patient lost more than 5% by weight, in the intervention group, this percentage increased to 26.9%; statistically significant (p-value = 0.0304). For the 10% target no significant differences at 2 years were detected (5% vs. 8%). It was found that after two years the BMI in the control group an average 0.9 kg/m2 and 2.4 kg/m2 was reduced in the study group (p-value = 0.0237). Conclusion: based motivational group intervention program can improve anthropometric and lifestyle parameters in obese patients treated in a primary care center.

Palabras clave : Motivational interviewing; Diet; Obesity.

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