Research has proven that both mindfulness training and exposure to nature have positive health effects. The purpose of this study was to systematically review quantitative studies of mindfulness interventions conducted in nature (nature-based mindfulness), and to analyze the effects through meta-analyses. Electronic searches revealed a total of 25 studies to be included, examining 2990 participants. Three analyses were conducted: Nature-based mindfulness interventions evaluated as open trials (k = 13), nature-based mindfulness compared with groups in non-active control conditions (k = 5), and nature-based mindfulness compared with similar interventions but without contact with nature (k = 7). The overall combined psychological, physiological, and interpersonal effects from pre- to post-intervention were statistically significant and of medium size (g = 0.54, p < 0.001). Moderation analyses showed that natural environments characterized as forests/wild nature obtained larger numerical effects than environments characterized as gardens/parks, as did informal mindfulness compared with formal mindfulness. The small number of studies included, as well as the heterogeneity and generally low quality of the studies, must be taken into consideration when the results are interpreted. PROSPERO registration number: CRD42017065639.

Available evidence shows that an increasing number of soldiers are seeking help for post-traumatic stress disorder. The post-traumatic stress disorder condition has big emotional and psychological consequences for the individual, his/her family and the society. Little research has been done to explore the impact of nature-based therapy for veterans with post-traumatic stress disorder although there is a growing amount of evidence pointing towards positive outcome. This qualitative study aims to achieve a deeper understanding of this relationship from the veteran’s perspective. Eight Danish veterans participated in a 10-week nature-based therapy. Qualitative interviews were conducted and analysed using the interpretative phenomenological method. The results indicated that the veterans have achieved tools to use in stressful situations and experienced an improvement in their post-traumatic stress disorder symptoms.

Objective: This study concerned optimization of an evidence-based crisis shelter garden as a setting for everyday activities and nature-based therapy. The study hereby tested the design guidelines that the garden is based on. Background: Design guidelines for gardens intended to support health are becoming increasingly specialized, targeting different user groups. This study contributes to the knowledge concerning health-supporting garden design at crisis shelters for women and children who are exposed to domestic violence. Method: The study included a post-occupancy evaluation (POE) consisting of landscape analyses, observation of physical traces, and interviews as well as a subsequent participatory design process. Results: The landscape analyses and the observation of physical traces indicated a minimal level of maintenance and recurrent use being limited to a few areas of the garden. The interviews added nuance and new issues to these results, resulting in the following themes: maintenance, accessibility, safety, therapeutic setting and free space, many ways to play, and social and private spheres. The participatory design process led to an optimization of the garden, including changes to its physical design related to making the garden safer, positively distractive, and more versatile in terms of activities. Improvements were also made regarding policy for use, maintenance, and informing users. Conclusion: The design guidelines were tested, and the evidence was strengthened, adding nuance and new issues to consider during further development of the guidelines. Both the POE and the participatory design process were confirmed as crucial aspects of evidence-based health design.

Here, we developed and examined a new way of disseminating mindfulness in nature to people without meditation experience, based on the finding that mindfulness conducted in natural settings may have added benefits. We evaluated a 5-day residential programme aiming to reduce stress and improve mental health outcomes. We compared an indoor and an outdoor version of the programme to a control group in a pilot randomised controlled trial (RCT). Sixty Danish university students experiencing moderate to high levels of stress were randomised into a residential mindfulness programme indoors (n = 20), in nature (n = 22), or a control group (n = 18). Participants completed the Perceived Stress Scale and the Self-Compassion Scale (primary outcomes) along with additional secondary outcome measures at the start and end of the program and 3 months after. Stress was decreased with small to medium effect sizes post-intervention, although not statistically significant. Self-compassion increased post-intervention, but effect sizes were small and not significant. At follow-up, changes in stress were not significant, however self-compassion increased for both interventions with medium-sized effects. For the intervention groups, medium- to large-sized positive effects on trait mindfulness after a behavioural task were found post-intervention, and small- to medium-sized effects in self-reported mindfulness were seen at follow-up. Connectedness to Nature was the only outcome measure with an incremental effect in nature, exceeding the control with a medium-sized effect at follow-up. All participants in the nature arm completed the intervention, and so did 97% of the participants in all three arms. Overall, the results encourage the conduct of a larger-scale RCT, but only after adjusting some elements of the programme to better fit and take advantage of the potential benefits of the natural environment.

Self-regulation is pivotal for human well-being and mental health. In this qualitative study, we followed a randomized controlled trial (RCT) and explored how a five-day residential mindfulness program in a restorative natural setting supported self-regulation among university students experiencing moderate to severe stress. Six participants were interviewed post intervention and at three months’ follow-up on how they experienced the retreat. Through interpretative phenomenological analysis, four interrelated themes emerged: “supportive conditions”, “attitudes of mindfulness”, “connection” and “physical and psychological balance.” These themes reflected the outcomes of the retreat that participants valued in stressful situations. A progression occurred during the retreat through the themes, with emphasis developing from the supportive conditions of the setting, to cultivating mindful attitudes, over connection to both self, others and nature, to changes and effects on the physical, psychological and even spiritual level. In addition, participants emphasized experiences of positive emotions, energy, calmness, meta-awareness and the feeling of being part of the web of life. In conclusion, participants’ experiences with a five-day nature-based mindfulness intervention revealed a range of qualities of both physical-, psychological-, social- and spiritual nature that are supportive for self-regulation.