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        Affect systems, changes in body mass index, disordered eating and stress: An 18-month longitudinal study in women

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        Author
        Kupeli, Nuriye
        Norton, Sam
        Chilcot, Joseph
        Campbell, Iain C.
        Schmidt, Ulrike
        Troop, Nicholas
        Attention
        2299/18248
        Abstract
        Background: Evidence suggests that stress plays a role in changes in body weight and disordered eating. The present study examined the effect of mood, affect systems (attachment and social rank) and affect regulatory processes (self-criticism, self-reassurance) on the stress process and how this impacts on changes in weight and disordered eating. Methods: A large sample women participated in a community-based prospective, longitudinal online study in which measures of body mass index (BMI), disordered eating, perceived stress, attachment, social rank, mood, and self-criticism/reassurance were measured at 6-monthly intervals over an 18 month period. Results: Latent Growth Curve Modelling showed that BMI increased over 18 months while stress and disordered eating decreased and that these changes were predicted by high baseline levels of these constructs. Independently of this, however, increases in stress predicted a reduction in BMI which was, itself, predicted by baseline levels of self-hatred and unfavourable social comparison. Conclusions: This study adds support to the evidence that stress is important in weight change. In addition, this is the first study to show in a longitudinal design, that social rank and self-criticism (as opposed to self-reassurance) at times of difficulty predict increases in stress and, thus, suggests a role for these constructs in weight regulation.
        Publication date
        2017-04-18
        Published in
        Health Psychology and Behavioral Medicine
        Published version
        https://doi.org/10.1080/21642850.2017.1316667
        License
        http://creativecommons.org/licenses/by/4.0/
        Other links
        http://hdl.handle.net/2299/18248
        Relations
        School of Life and Medical Sciences
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