Research AppraisalRandomised Controlled Trial

WISE-Therapy (What's Important: Schedule and Engage) and bouldering psychotherapy for depression: A randomized clinical trial

BMC medicineKornhuber, Johannes, Lewczuk, Piotr, Siegmann, Eva-Maria et al.27 May 2026DOI

Clinical Snapshot

75CEBM
Evidence: ModerateRandomised Controlled Trial

PICO Framework

P — Population128 adults with depression in outpatient setting in Erlangen, Germany
I — InterventionWISE-Therapy (44 participants) or Bouldering Psychotherapy (40 participants) - 10 weekly 2-hour group sessions
C — ComparatorTreatment as usual (TAU) - 44 participants
O — OutcomesPrimary: Depression severity (Montgomery-Asberg Depression Rating Scale). Secondary: Response rates, remission rates, anxiety, sense of coherence, self-efficacy, mindfulness during physical activity

Bottom Line

This German RCT demonstrates that both WISE-Therapy and Bouldering Psychotherapy significantly reduce depressive symptoms compared to treatment as usual in outpatient group settings. WISE-T showed superior efficacy with moderate effect size (d=0.62) and higher remission rates (17.6% vs 2.6%). Both interventions offer promising approaches to address the growing demand for depression treatment through cost-effective group formats. However, the single-centre design and lack of participant blinding limit confidence in generalisability. The interventions appear safe with good adherence rates. Clinicians should consider these approaches as adjuncts to standard care, particularly where group therapy resources are available. Further multi-centre trials would strengthen the evidence base before widespread implementation.

Evidence: Moderate

Key Findings

  • P Value: WISE-T: P=0.007, BPT: P=0.037

  • Effect Size: WISE-T: d=0.62 (moderate), BPT: d=0.48 (small-moderate)

  • Primary Outcome: Montgomery-Asberg Depression Rating Scale reduction at post-intervention

  • Nnt Or Sensitivity: Response rates: WISE-T 35.3%, BPT 29.7%, TAU 21.1%. Remission rates: WISE-T 17.6% vs TAU 2.6% (P=0.047)

  • Confidence Interval: WISE-T: 95%-CI [-9.5 to -1.5], BPT: 95%-CI [-8.2 to -0.3]

Clinical Application

Group format addresses therapist shortage and cost constraints. Bouldering therapy requires specialised facilities. Both interventions appear well-tolerated with good adherence. Relevant to Australian mental health services addressing treatment gaps. Group therapy models align with Medicare Benefits Schedule psychology items. Would require training and potentially specialised facilities for bouldering component. Adults with depression suitable for group therapy in outpatient mental health settings

Abstract

BACKGROUND: Group therapies address the growing treatment demand-supply gap for depression. This study evaluated whether the novel WISE-Therapy (WISE-T; What's Important: Schedule and Engage) and Bouldering Psychotherapy (BPT) are more effective in reducing depressive symptoms in an outpatient group therapy setting than treatment as usual (TAU). METHODS: This randomized, controlled, assessor-blinded, longitudinal, clinical trial was conducted in a naturalistic monocentric setting in Erlangen (Germany) between April 2022 and March 2023, with follow-up until July 2024. 128 adults were randomly assigned to WISE-T (44), BPT (40), or TAU (44). In 10 weekly 2-hour group sessions, WISE-T focused on identifying what is important, scheduling meaningful activities, and engaging in them for long-term mental health, and BPT combined psychotherapy with bouldering, while the control group received TAU. Depression severity was measured with the Montgomery-Asberg Depression Rating Scale at baseline, post-intervention, and one-year follow-up, and analyzed with a hybrid marginal model. RESULTS: Both intervention groups showed significantly greater reduction in depressive symptoms than controls at post-intervention (WISE-T: -5.5 points, 95%-CI [-9.5 to -1.5], P = .007, d = 0.62; BPT: -4.2 points, 95%-CI [-8.2 to -0.3], P = .037, d = 0.48). Response rates were 35.3% for WISE-T, 29.7% for BPT, and 21.1% for controls. Remission rates were significantly higher in WISE-T (17.6%) than in controls (2.6%, P = .047). Treatment adherence was good with minimal adverse events reported. The secondary outcomes showed significant results for anxiety, sense of coherence, self-efficacy, and mindfulness during physical activity. CONCLUSIONS: Both interventions demonstrated efficacy in reducing depressive symptoms compared with controls in this single-center setting. The study supports the integration of both therapies into outpatient care settings. TRIAL REGISTRATION: Study procedures received approval from the Friedrich-Alexander-Universität Erlangen-Nürnberg Ethics Committee (Ref. 21-332-B) on December 13, 2021. The Trial was preregistered in March 2022 via ISRCTN12347878 .

References

  1. 1.Kornhuber, J., Lewczuk, P., Siegmann, E. M., Schneider, S., Eversmann, L., Kind, L., & Luttenberger, K. (2026). WISE-Therapy (What's Important: Schedule and Engage) and bouldering psychotherapy for depression: A randomized clinical trial. BMC Medicine. https://doi.org/10.1159/000521951
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