Trial reportInternational journal of environmental research and public health2019
The Effects of a Forest Therapy Programme on Mental Hospital Patients with Affective and Psychotic Disorders.
Trial report in International journal of environmental research and public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07436481 (The Effectiveness of Forest Therapy on Psychotic Patients), which is not on this map. Cited by 37 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Effectiveness of Forest Therapy on Psychotic Patients: Focusing on Changes in Inflammatory Pathways and The Psychotic Condition of Patients
Who cites it
37 citing papers in PubMed, 3 syntheses or guidelines pooled it, 101 citations in OpenAlex.
- Short-term cardiovascular and mental health responses to Shinrin-Yoku (forest bathing): a systematic review and meta-analysis.Frontiers in psychology · 2026Pooled it
- The Effects of Forest Therapy on the Blood Pressure and Salivary Cortisol Levels of Urban Residents: A Meta-Analysis.International journal of environmental research and public health · 2022Pooled it
- Is altitude a determinant of the health benefits of nature exposure? A systematic review and meta-analysis.Frontiers in public health · 2022Pooled it
- Forest Therapy Alone or with a Guide: Is There a Difference between Self-Guided Forest Therapy and Guided Forest Therapy Programs?International journal of environmental research and public health · 2021Trial
- Green Exercise: Can Nature Video Benefit Isometric Exercise?International journal of environmental research and public health · 2021Trial
- Comparative Study of the Restorative Effects of Forest and Urban Videos during COVID-19 Lockdown: Intrinsic and Benchmark Values.International journal of environmental research and public health · 2020Trial
- The Applicability of Forest Therapy for Socially Isolated Young Adults: Parallel Changes in Psychological Distress and Mindfulness.International journal of environmental research and public health · 2026Article
- The essential elements for successful implementation of nature therapy programs in mental health services: a systematic review with narrative synthesis.Implementation science communications · 2026Review
- Potential preventive effects of forest bathing/Shinrin-yoku on depressive symptoms: a narrative review of mechanistic evidence.Environmental health and preventive medicine · 2026Review
- Forest bathing (Frontiers in public health · 2026Article
- A systematic review investigating the relationship between green and blue spaces and depression in older adults via DNA methylation.Environmental epigenetics · 2026Review
- Components and Application Plans for Designing a Korean Forest Therapy Prescription Model: Using Case Examination and a Focus Group Interview (FGI).Healthcare (Basel, Switzerland) · 2025Article
- Five-Step Forest Bathing Protocol as a Nature-Based Solution for Student Wellbeing in Higher Education: A Research Brief on Insights and Lessons from a Pilot Study.International journal of environmental research and public health · 2025Article
- Challenges in nature-based health and therapy research and critical considerations for application in musculoskeletal health.Frontiers in public health · 2025Article
- Is forest bathing a panacea for mental health problems? A narrative review.Frontiers in public health · 2025Review
- Association Between Depressive Symptoms and Blood Biomarkers in Adult Hospitalized Patients: A Multicenter Analysis Across Hospital Districts in Luzhou, China.Journal of multidisciplinary healthcare · 2025Article
- Interplay among Anxiety, Digital Environmental Exposure, and Cognitive Control: Implications of Natural Settings.Behavioral sciences (Basel, Switzerland) · 2024Article
- Article
- Exploring the effect of different typical plant community on human stress reduction: a field experiment.Scientific reports · 2024Article
- How leisure involvement impacts visitors' perceived health benefits in urban forest parks: examining the moderating role of place attachment.Frontiers in psychology · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The positive effect of forest bathing on the mental health and wellbeing of those suffering from post-traumatic stress disorder or experiencing stress has been proven. It is not known, however, how 'forest therapy' affects the mental health of people who are treated in a psychiatric hospital for affective or psychotic disorders. Potentially, forest therapy could bring many benefits to these people. To test the potential effectiveness of this therapy, a quasi-experiment was carried out in a psychiatric hospital in Olsztyn (north Poland). In the summer and autumn of 2018, the patients of the psychiatric hospital in Olsztyn participated in forest therapy interventions. The proposed forest therapy consisted of participating in one hour and forty-five minutes walks under the supervision of a therapist. Subjects filled out the Profile of Mood States Questionnaire (POMS) and the State Trait Anxiety Inventory (STAI-S) before and after the study. In the case of a group of patients with affective disorders, forest therapy had a positive effect on nearly all POMS scale subscales, with the exception of the 'anger-hostility' subscale, which did not change its values significantly after the intervention. In these patients, the greatest impacts were noted in the subscales 'confusion' and 'depression-dejection'; the level of anxiety measured with the STAI-S scale also significantly decreased. In the case of patients with psychotic disorders, the values of the 'confusion' and 'vigour' subscales and the STAI-S scale exhibited the greatest changes. These changes were positive for the health of patients. Regarding the 'fatigue' subscale, no significant changes were observed in patients with psychotic disorders. The observed changes in psychological indicators in psychiatric hospital patients with both kinds of disorders indicate that the intervention of forest therapy can positively affect their mental health. The changes observed in psychological indicators were related to the characteristics of the given disorder.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.