Gymnastik- och idrottshögskolan, GIH

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Cardiorespiratory fitness and response to exercise treatment in depression.
Karolinska Institutet.
Karolinska Institutet.ORCID iD: 0000-0002-6170-8251
Karolinska Institutet.
Karolinska Institutet.
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2018 (English)In: BJPsych open, ISSN 2056-4724, Vol. 4, no 5, p. 346-351Article in journal (Refereed) Published
Abstract [en]

Background: Exercise improves cardiorespiratory fitness (CRF) and reduces depressive symptoms in people with depression. It is unclear if changes in CRF are a predictor of the antidepressant effect of exercise in people with depression.

Aims: To investigate whether an increase in CRF is a predictor of depression severity reduction after 12 weeks of exercise (trial registration: DRKS study ID, DRKS00008745).

Method: The present study includes participants who took part in vigorous (n = 33), moderate (n = 38) and light (n = 39) intensity exercise and had CRF information (as predicted maximal oxygen uptake, O2max) collected before and after the intervention. Depression severity was measured with the Montgomery-Åsberg Depression Rating Scale (MADRS). O2max (L/min) was assessed with the Åstrand-Rhyming submaximal cycle ergometry test. The main analysis was conducted pooling all exercise intensity groups together.

Results: All exercise intensities improved O2max in people with depression. Regardless of frequency and intensity of exercise, an increase in post-treatment O2max was significantly associated with reduced depression severity at follow-up (B = -3.52, 95% CI -6.08 to -0.96); adjusting for intensity of exercise, age and body mass index made the association stronger (B = -3.89, 95% CI -6.53 to -1.26). Similarly, increased O2max was associated with higher odds (odds ratio = 3.73, 95% CI 1.22-11.43) of exercise treatment response (≥50% reduction in MADRS score) at follow-up.

Conclusions: Our data suggest that improvements in O2max predict a greater reduction in depression severity among individuals who were clinically depressed. This finding indicates that improvements in O2max may be a marker for the underpinning biological pathways for the antidepressant effect of exercise.

Declaration of interest: None.

Place, publisher, year, edition, pages
2018. Vol. 4, no 5, p. 346-351
Keywords [en]
Depression, cardiorespiratory fitness, exercise
National Category
Psychiatry Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-5391DOI: 10.1192/bjo.2018.45ISI: 000451392100003PubMedID: 30140446OAI: oai:DiVA.org:gih-5391DiVA, id: diva2:1242092
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Regassa-studienAvailable from: 2018-08-27 Created: 2018-08-27 Last updated: 2025-02-11

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Helgadóttir, BjörgEkblom, Örjan

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