Clinical trial NCT04897685: Nature-based Treatment Group for Depression
Official title: The Effects of Nature-based Intervention in the Treatment of Depression: Multi-center, Randomized Controlled Trial in Finland
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Depression
Keywords: nature-based
therapy group
recovery experiences
nature experiences
Lead sponsor: JAMK University Of Applied Sciences
Sponsor class: OTHER
Collaborators: name: Tampere University
name: University of Jyvaskyla
First posted: 2021-05-21
Enrollment: 147
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: This multi-centre research investigates the effects of nature-based treatment group on participants diagnosed with depression. In total, 147 persons participated in the study in various locations in Finland. All participants received treatment as usual (TAU). They were randomised into nature-based group + TAU (n = 70) or TAU-only (n = 77). The participants in the nature-based group + TAU were offered 12 sessions once a week in addition to standard care. The measurement points included pre-treatment measurement at the baseline and post-treatment measurement at the end of the intervention, which was 12 weeks after the pre-treatment measurement. The follow-up measurement was 3 months after the post-treatment measurement. The effects of the intervention were assessed with a clinical measure of depression (BDI-I) and with indicators of psychological distress (CORE-10), subjective well-being (SWEMWBS), work/study ability (WAI) and nature experiences (ROS, KOLU). The participants in the treatment group (nature-based group +TAU) were compared to the participants in the control group who received TAU-only.

Detailed description: This research investigates the outcomes of nature-based treatment groups in the treatment of adults with depression. In total, 147 participants were involved. Of them, 70 were randomized into DMT group and 77 into the control group. All participants received treatment as usual during the research. The inclusion criteria of the study were: a diagnoses of depression (ICD -diagnostic system), BDI-I score 10 or above (cut off score for mild depression), treatment contact in a health care service and 18-65 years of age. The exclusion criteria were: 1) active suicidal ideation, 2) psychotic symptoms, and 3) substance misuse that is on a critical level (Audit questionnaire scores above 10). Also, participants who had pain-related problems that restricted daily life or were pregnant were not admitted to the study.

Nature-based treatment group was facilitated by a health care professional and included 12 x 90 mins sessions within 12 weeks. Depressive symptoms (BDI-I), psychological distress (CORE-10), subjective well-being (SWEMWBS), ability to work/study (WAI), and nature experiences (ROS, KOLU) were assessed at three measurement points: pre-measurement at the baseline, post-measurement 12 weeks after the pre-treatment measurement, and a follow-up measurement three months after the post-treatment measurement.

This research includes a larger number of participants (N = 147) than have been involved in previous studies utilising randomised controlled trials in nature-based interventions. The research generates further information about the effectiveness of nature-based therapy groups in the rehabilitation of depression as it was conducted in five cities across Finland. This type of multi-centre research can provide a realistic picture of the typical practice of a range of health care professionals working with participants in various geographic locations.

Eligibility criteria: Inclusion Criteria:

* A diagnoses of depression (ICD -diagnostic system)
* BDI-I score 10 or above
* Treatment contact in a health care service
* Motivated to commit to a 12-session treatment group taking place in nearby nature environments
* Able to communicate adequately in Finnish in order to participate

Exclusion Criteria:

* Active suicidal ideation
* Psychotic symptoms
* Substance misuse that is on a critical level
* Volunteers who had pain-related problems that restricted daily life or were pregnant were not admitted to the study

Primary outcomes:
measure: Change from baseline depressive symptoms (Beck Depression Inventory; BDI-I) at 12-week post-treatment measurement.
timeFrame: 12 weeks
measure: Change from post-treatment depressive symptoms (Beck Depression Inventory-I; BDI-I) at three-month follow-up measurement.
timeFrame: 3 months
Secondary outcomes:
Other outcomes:
Locations:
city: Jyväskylä
country: Finland
facility: University of Jyväskylä
city: Jyväskylä
country: Finland
facility: Institute of Rehabilitation, JAMK University of Applied Sciences
city: Tampere
country: Finland
facility: Tampere University
Study officials:
affiliation: Tampere University
name: Kalevi Korpela, Professor
role: PRINCIPAL_INVESTIGATOR
References: