Persistent leisure-time physical activity in adulthood and use of antidepressants : a follow-up study among twins
Waller, K., Kaprio, J., Korhonen, T., Tuulio-Henriksson, A., & Kujala, U. (2016). Persistent leisure-time physical activity in adulthood and use of antidepressants : a follow-up study among twins. Journal of Affective Disorders, 200(August), 172-177. https://doi.org/10.1016/j.jad.2016.04.036
Published inJournal of Affective Disorders
© 2016 Elsevier B.V. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
Background To study whether persistent leisure-time physical activity (PA) during adulthood predicts use of antidepressants later in life. Methods The Finnish Twin Cohort comprises same-sex twin pairs born before 1958, of whom 11 325 individuals answered PA questions in 1975, 1981 and 1990 at a mean age of 44 years (range 33–60). PA volume over 15-years was used as the predictor of subsequent use of antidepressants. Antidepressant use (measured as number of purchases) for 1995–2004 were collected from the Finnish Social Insurance Institution (KELA) prescription register. Conditional logistic regression was conducted to calculate odds ratios (OR) with 95% confidence intervals (CI) for the use of antidepressants in pairs discordant for PA (642, including 164 monozygotic (MZ) pairs). Results Altogether 229 persons had used at least one prescribed antidepressant during the study period. Active co-twins had a lower risk (unadjusted OR 0.80, 95%CI 0.67–0.95) for using any amount of antidepressants than their inactive co-twins; trends being similar for DZ (0.80, 0.67–0.97) and MZ pairs (0.78, 0.51–1.17). The lowest odds ratio (0.51, 0.26–0.98) was seen among MZ pairs after adjusting for BMI, smoking and binge drinking. The point estimates were similar but non-significant for long-term antidepressant use (4+purchases equivalent to 12 months use). Limitations Self-reported physical activity and low number of discordant MZ pairs. Discussion Use of antidepressants was less common among physically active co-twins even when shared childhood experiences and genetic background were controlled for. Physical activity in midlife may therefore be important in preventing mild depression later in life. ...
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Waller, Katja (University of Jyväskylä, 2011)
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