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International Journal of Clinical and Health Psychology
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Vol. 14. Issue 1.
Pages 1-8 (January 2014)
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Vol. 14. Issue 1.
Pages 1-8 (January 2014)
DOI: 10.1016/S1697-2600(14)70031-6
Open Access
Generalization of theory-based predictions for improved nutrition to adults with morbid obesity: Implications of initiating exercise
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James J. Annesia,
Corresponding author
jamesa@ymcaatlanta.org

Corresponding author at: YMCA of Metropolitan Atlanta, 100 Edgewood Avenue, NE, Suite 1100, Atlanta, Georgia, 30303, USA.
, Gisèle A. Tennantb
a YMCA of Metro Atlanta and Kennesaw State University, United States
b YMCA Canada, Canada
Article information
Abstract

Exercise is a robust predictor of long-term success with weight loss, and research based on social cognitive theory suggests that exercise program-induced changes in self-regulation, mood, and self-efficacy transfer to improved eating. These relationships were tested in adults with morbid obesity (overall Mage = 43 years; 86% female; Mbody mass index = 45kg/m2) participating in a 6-month treatment of cognitive-behaviorally supported exercise paired with either standard nutrition education (n=87) or cognitive-behavioral methods for controlled eating (n=89). Based on multiple mediation analyses, improvements in self-regulation and self-efficacy were significantly associated with increased fruit and vegetable intake and reduced body mass index (BMI). The cognitive-behavioral nutrition methods were associated with greater improvements in fruit and vegetable intake and BMI, however, within both models, complete mediation was found after simultaneous entry of changes in self-regulation, mood, and self-efficacy, and exercise volume as mediators. Only the indirect effect of change in self-regulation was a significant (or marginally significant) independent mediator. Generalization of previously identified relationships between exercise program-induced improvements in psychosocial variables and improvements in nutrition and BMI were supported for individuals with morbid obesity. Based on these relationships, implications for behavioral treatments were discussed.

Keywords:
Cognitive-behavioral
Treatment
Morbid obesity
Exercise
Experiment
Resumen

El ejercicio es un robusto predictor a largo plazo de la pérdida de peso. La investigación basada en la teoría social-cognitiva sugiere que los cambios inducidos por programas de ejercicio en auto-regulación, estado de ánimo y autoeficacia se transfieren en mejor alimentación. Estas relaciones fueron probadas en adultos con obesidad mórbida (Medad = 43 años; 86% mujeres; Míndice de masa corporal = 45Kg/m2) que participaron durante seis meses en un tratamiento cognitivo-conductual apoyado por ejercicio asociado con educación nutricional (n=87) o métodos cognitivo-conductuales para alimentación controlada (n=89). Las mejoras en la auto-regulación y auto-eficacia se asociaron con mayor consumo de frutas y verduras, y reducción del índice de masa corporal (IMC). Los métodos de nutrición cognitivo-conductuales se asociaron a incremento en consumo de frutas y verduras, y al IMC; en ambos modelos la mediación completa se obtuvo después de la entrada simultánea como mediadores de los cambios en auto-regulación, estado de ánimo, autoeficacia y volumen de ejercicio. Solo el efecto indirecto del cambio en auto-regulación fue un mediador independiente significativo (marginalmente significativo). La generalización de estas relaciones es aplicable a individuos con obesidad mórbida. Se discuten las implicaciones para los tratamientos conductuales.

Palabras clave:
Cognitivo-conductual
Tratamiento
Obesidad mórbida
Ejercicio
Experimento
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Copyright © 2014. Asociación Española de Psicología Conductual
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