Mindful Non-reactivity, Anxiety, Depression, and Perceived Stress as Mediators of the Mindfulness Virtual Community Intervention: Pathways to Enhance Mental Health in University Students.

Summary

Online mindfulness programs significantly boost student mental health. An analysis of two student trials explored how an 8-week online mindfulness and CBT intervention improved well-being. Participants experienced notable reductions in anxiety, depression, and perceived stress, alongside enhanced quality of life. Crucially, the program improved mindful non-reactivity, which in turn helped alleviate these mental health challenges. This online intervention effectively fosters resilience. The findings highlight that improving one's ability to observe thoughts without reacting, along with decreasing depression and anxiety, are vital pathways for enhancing student mental well-being.

Abstract

Mindfulness-based interventions (MBIs) are widely employed in mental health promotion and treatment. Despite widespread evidence of effectiveness with different populations and delivery modes, there are sparse findings concerning the mechanisms of action in MBIs. This study, based on a secondary evaluation of two randomized controlled trials (RCTs) with student participants, was aimed at understanding mediators of the Mindfulness Virtual Community (MVC) intervention, an 8-week, multi-component, online mindfulness and cognitive-behavioral therapy (M-CBT) intervention. Mediation analysis, using structural equation modeling, was used to assess direct and indirect relationships between study group (i.e. intervention versus wait list control) and outcomes. Consistent with the intervention's theoretical perspective and direct effects paths, a model was specified to evaluate whether mindful non-reactivity, as evaluated by the five-factor mindfulness questionnaire, mediated the effect of study group on anxiety and depression (as symptom-driven outcomes), and perceived stress and quality of life (as functional outcomes). The model included additional mediating paths for perceived stress through anxiety and depression, and for quality of life through anxiety, depression, and perceived stress. The model was thereafter extended, adjusting for pre-intervention differences in mindfulness (i.e. observing, describing, activity with awareness, non-judgement, and non-reactivity) facets. Direct (non-mediated) effects indicated statistically significant differences at 8 weeks between the MVC and waitlist control (WLC) groups on depression (-1.65, P=.003), anxiety (-3.29, P<.001), perceived stress (-2.28, P=.001), and quality of life (4.07, P=.003), and the non-reactivity facet of mindfulness (1.55, P=.001) in favor of the MWC intervention. Mediation analysis supported the mediating role of the non-reactivity facet of mindfulness, depression, anxiety and perceived stress through single and sequential mediation paths. Results indicated good fit characteristics for the main (CFI=.988; RMSEA=.052; SRMR=.045) and extended (CFI=.992; RMSEA=.043; SRMR=.036) models. This research underscores the importance of mindful non-reactivity, depression, and anxiety as key mediators of MVC intervention benefits.

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