BACKGROUND: The purpose of this study is to use a single-arm trial to assess the effectiveness of a 6-week mindfulness-based intervention (MBI) on the emotional, social, and behavioural well-being of adolescents attending an alternative school in Lethbridge, Alberta. Mindfulness focuses on cultivating present-moment awareness in a non-reactive and non-judgmental way. A 2017 meta-analysis found MBIs have a moderate effect on increasing mindfulness among youth in controlled studies. A 2020 meta-analysis found MBIs have an overall small effect size over a broad range of samples and mental health outcomes among youth. The review found that in clinical samples of youth the effect size for mental health outcomes is in the moderate range, and nearly three times the magnitude found of non-clinical samples. MBIs also improve the mental health of at-risk youth including those in foster care, prison, and those who are survivors of interpersonal trauma. The goal of the present study is to build upon emerging evidence suggesting MBIs may be a useful addition to the curriculum within an alternative school environment. Alternative schools, also called outreach schools in Alberta, address the interpersonal, social, and learning needs of teens that cannot be met in regular school settings. Alternative schools offer a flexible learning environment with innovative programming designed to provide academic, social and emotional supports and skill building. Youth who attend alternative schools experience more psychosocial problems, including adverse childhood experiences (ACEs), and health risk behaviours; and thus may benefits from MBIs. Learning how to regulate emotions in a socially adaptive and appropriate manner is an important part of healthy psychological development. Emotion regulation allows an adolescent greater autonomy, strengthens self-esteem and improves self-efficacy. The poor regulation of emotions is implicated in the diagnostic criteria of many mental health disorders. It is generally agreed in the literature that emotion regulation processes can be conscious or unconscious, and automatic or effortful. It is also generally agreed that emotion regulation involves both reducing the intensity and frequency of negative emotional states, as well as developing the ability to create and maintain positive emotions. While MBIs have been shown to strengthen emotion regulation in regular public high schools, the extent to which MBIs strengthen emotion regulation within alternative schools is not well understood, and the primary focus of the present study. The investigator will also explore the impact of an MBI intervention on mindfulness, psychological outcomes, social connection, and behaviour.

INTERVENTION: In this study, the investigator will use the six-week, evidence-based Learning to BREATHE Program as the primary intervention. Learning to BREATHE teaches emotion regulation and stress-reduction in relatable ways for teens. The program is delivered flexibly and adaptively rather than as a manualized curriculum, which fits the learning environment and goals of alternative schools. To date, two studies have examined the effectiveness of the Learning to BREATHE program in alternative schools. The first study, based in the US, used a pre-post design and found significant improvements in self-esteem and perceived stress. The second study used a randomized controlled design with an active comparator to assess Learning to BREATHE against a program designed to reduce substance use. The team reported many intervention delivery problems within an alternative school, including youth who were disinterested and disruptive during sessions. Changes were made to the intervention throughout the trial to address these problems, including involving teachers and school support staff in the sessions as youth were more familiar and comfortable with them. They also shortened activities that youth found difficult (sitting meditation), and lengthening others that youth enjoyed (body scan meditations and restorative yoga exercises). At study end, the Learning to BREATHE program intervention was more effective at reducing depression than active control. However, the small sample size (N = 14 intervention, N = 13 active control) and changes to the intervention throughout the trial made it difficult to assess impacts. To address these problems before the present study began, the investigator worked with social workers, school administrators, and community stakeholders in 2018-2019 to adapt the Learning to BREATHE Program for delivery within an alternative school environment. Suggested adaptions for program delivery were pilot tested in 2019-20 in a small sample of junior high students (N = 17) in the Lethbridge Alternative School Program. Sessions were delivered by three facilitators with mindfulness training certification. Due to the COVID-19 pandemic intervention effectiveness could not be assessed. The investigator was limited to analyzing post-intervention data collected before government-mandated school closures in March 2020 (N = 6 of 17 students who took part in the program). Fidelity and observational data collected during each session was also analyzed, and used in a student MSc thesis. The findings suggest youth were engaged in the adapted version of the program, that their understanding of mindfulness as a tool for stress and coping increased, and that incorporating digital technology (apps) to deliver segments of the intervention promoted independent use of the digital tools by youth outside the sessions.

METHODS: This intervention study will begin November 28, 2022, at a single location - Victoria Park High School in Lethbridge, AB. The study will be led by Dr. Cheryl Currie in the Faculty of Health Sciences at the University of Alberta in Alberta, Canada. The study is expected to end January 31, 2023. It is estimated that from time of first contact during student enrolment in the study each participant will be engaged in the study for nine weeks, excluding time away during the December holiday break. This includes one week to complete the pre-intervention data collection meeting with school staff, six weeks to take part in the intervention, and up to two weeks to complete a post-intervention data collection meeting with a school staff member. This study will recruit a school-based sample of approximately 35 youth that meet eligibility criteria to achieve 31 participants. Participants will be students registered in two specific classes in Victoria Park High School. These courses were chosen by school administration for participation in the program. A low (5%) loss to follow-up is expected given the program will be offered as part of two combined courses that students have chosen to enroll in. Students will complete the baseline survey immediately after completing the informed consent process by clicking the second Qualtrics tab that will be open on their iPad browser. The survey will be administered using the Qualtrics survey platform on iPads provided by the University of Lethbridge study team and will take approximately 20 minutes. Within two weeks of completing the intervention, participants will complete the same survey package they answered at baseline.

ANALYSIS STRATEGY: Data will be analyzed using Stata 17.0 and R software. The investigator will use frequencies and percentages to summarize participant age, grade, genders, Indigenous status (identify as Indigenous - yes or no), immigrant status (born in Canada - yes or no), and who participants currently live with. The purpose of collecting this data is to create a broad, general description of the sample in dissemination documents. For prediction of emotion regulation pre- and post-intervention, participants will be included in the analysis if they have completed 50% of the intervention and completed follow-up data collection. Missing data for participants who meet these criteria will be addressed using multiple imputation. A repeated-measures, mixed-model approach will be used to identify significant changes in each of the primary and secondary outcomes pre-post intervention.