Transdiagnostic efficacy of a group exercise intervention for outpatients with heterogenous psychiatric disorders: a randomized controlled trial

Johanna-Marie Zeibig, Britta Seiffer, Gorden Sudeck, Inka Rösel, Martin Hautzinger, Sebastian Wolf, Johanna-Marie Zeibig, Britta Seiffer, Gorden Sudeck, Inka Rösel, Martin Hautzinger, Sebastian Wolf

Abstract

Background: Exercise efficaciously reduces disorder-specific symptoms of psychiatric disorders. The current study aimed to examine the efficacy of a group exercise intervention on global symptom severity and disorder-specific symptoms among a mixed outpatient sample.

Methods: Groups of inactive outpatients, waiting for psychotherapy, with depressive disorders, anxiety disorders, insomnia, and attention-deficit/hyperactivity disorders were randomized to a manualized 12-week exercise intervention, combining moderate to vigorous aerobic exercise with techniques for sustainable exercise behaviour change (n = 38, female = 71.1% (n = 27), Mage = 36.66), or a passive control group (n = 36, female = 75.0% (n = 27), Mage = 34.33). Primary outcomes were global symptom severity and disorder-specific symptoms, measured with the Symptom Checklist-90-Revised and Pittsburgh Sleep Quality Index pre- and post-treatment. Secondary outcome was the self-reported amount of exercise (Physical Activity, Exercise, and Sport Questionnaire), measured pre-treatment, intermediate-, and post-treatment. Intention-to-treat analyses were conducted using linear mixed models. Linear regressions were conducted to examine the effect of the change of exercise behaviour on the change of symptoms.

Results: The intervention significantly improved global symptom severity (d = 0.77, p = .007), depression (d = 0.68, p = .015), anxiety (d = 0.87, p = .002), sleep quality (d = 0.88, p = .001), and increased the amount of exercise (d = 0.82, p < .001), compared to the control group. Post-treatment differences between groups were significant for depression (d = 0.63, p = .031), sleep quality (d = 0.61, p = .035) and the amount of exercise (d = 1.45, p < .001). Across both groups, the reduction of global symptom severity was significantly predicted by an increase of exercise (b = .35, p = .012).

Conclusions: The exercise intervention showed transdiagnostic efficacy among a heterogeneous clinical sample in a realistic outpatient setting and led to sustained exercise behaviour change. Exercise may serve as an efficacious and feasible transdiagnostic treatment option improving the existing treatment gap within outpatient mental health care settings.

Trial registration: The study was registered on ClinicalTrials.gov (ID: NCT03542396 , 25/04/2018).

Keywords: Anxiety disorders; Depression; Exercise; Insomnia; Transdiagnostic efficacy.

Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Intervention procedure of the group exercise intervention. Dark grey boxes represent group meetings combined with supervised aerobic exercise (starting session 3) and the supporters’ session (session 14 in week 5). Session 1 contains an introduction into the intervention. Session 15 is conducted in week 12. Light grey boxes represent non-supervised exercises or resistance training, which can be conducted as participants’ first non-supervised exercise (session 6). The phone represents the weekly phone contact from week 5–12. Week 1–2 mainly aimed to increase motivation, week 2–4 mainly increase volition. Week 5–12 aimed to transfer motivation and volition for exercise into participants’ daily life routines
Fig. 2
Fig. 2
CONSORT flow diagram: profile and enrollment and flow through the randomized controlled trial of group exercise intervention versus a passive control group for individuals with mental disorders

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Source: PubMed

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