ArticlePilot and feasibility studies2026
The 'Nature Impact' feasibility study protocol: a mixed methods feasibility study of a group- and nature-based health intervention for adults experiencing mild to moderate anxiety, depression and/or stress.
Article in Pilot and feasibility studies, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06981000 (A Feasibility Study of Locally Adapted Nature-based Health Interventions for People With Mild to Moderate Anxiety, Depression and Stress), which is not on this map. Cited by 1 paper.
What it found
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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.
A Feasibility Study of Locally Adapted Nature-based Health Interventions for People With Mild to Moderate Anxiety, Depression and Stress
Who cites it
1 citing paper in PubMed.
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
backgroundAnxiety, depression and stress-related conditions are prevalent and growing public health challenges, impacting individuals' quality of life and placing significant strain on healthcare systems globally. These complex conditions rarely respond to a single mode of treatment, underscoring the importance of diverse and complementary approaches. Nature-based health interventions (NBHIs) represent one such perspective, offering novel opportunities to address mental health by engaging with natural environments. While international interest in NBHIs is growing, evidence on how these interventions can be systematically developed and implemented remains limited. The aim of this study protocol is to report the planned Nature Impact Feasibility Study.
methodsThe Nature Impact Feasibility Study is a one-armed, mixed methods feasibility study aiming to evaluate a complex, group-based NBHI developed using the Medical Research Council framework for complex interventions. The intervention will be conducted across three sites in Denmark: Glostrup outpatient clinic, Kolding and Silkeborg municipality centres. The intervention consists of group-based NBHI programmes delivered weekly over 10 consecutive weeks, facilitated by experienced health professionals. The feasibility evaluation will examine three core domains. These include (1) the implementation process, including fidelity, dose, reach, adaptations and acceptability; (2) mechanisms of change and (3) contextual factors influencing implementation and intervention processes. Data will be collected through participant observations, focus group interviews, registration forms and participant questionnaires assessing mental health outcomes and the participants' relationship to nature. Data will be analysed using a mixed methods convergent design. Quantitative and qualitative data will be analysed separately and then integrated thematically during interpretation. DISCUSSION: By reporting the study protocol for the Nature Impact Feasibility Study in advance, the project enhances transparency, allows for critical appraisal of the planned design and methods and strengthens the foundation for the subsequent feasibility evaluation and future large-scale trials. The Nature Impact Feasibility Study will provide valuable insight into delivering NBHIs for adults experiencing mild to moderate anxiety, depression and/or stress, while informing intervention refinement, outcome measures and future research aimed at investigating the potential of integrating NBHIs into existing practices for treating anxiety, depression and stress.
trial registrationNCT06981000. Registered on March 13, 2025.
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