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J Behav Med. 2019 May 10. doi: 10.1007/s10865-019-00055-y. [Epub ahead of print]

Dyadic associations between physical activity and body mass index in couples in which one partner has diabetes: results from the Lifelines cohort study.

Author information

1
Department of Psychology, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada. rachel.burns@carleton.ca.
2
Research Institute on Addictions, University at Buffalo, The State University of New York, Buffalo, USA.
3
Department of Psychiatry, McGill University, Montreal, Canada.
4
Douglas Mental Health University Institute, Montreal, Canada.
5
Department of Epidemiology and Biostatistics, McGill University, Montreal, Canada.

Abstract

Physical activity and body mass index (BMI) are linked to the prevention and management of type 2 diabetes (T2D). Romantic partners influence each other's health and the behavioral management of T2D often involves both partners. Therefore, this study examined dyadic associations between physical activity and BMI in couples in which one partner has T2D. Data came from the Lifelines cohort study. The actor-partner interdependence model was applied to cross-sectional data from 1133 couples in which only one partner had T2D. The physical activity of the person with diabetes was inversely associated with his/her partner's BMI. However, partner physical activity was not associated with the BMI of the person with diabetes. These results suggest that people with diabetes may influence the BMI of their partners. Future research should consider how people with diabetes influence the health outcomes of their partners, which is an area that is often overlooked in the literature.

KEYWORDS:

Actor–partner interdependence model; Body mass index; Dyadic; Physical activity; Type 2 diabetes

PMID:
31076962
DOI:
10.1007/s10865-019-00055-y

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