A randomized controlled trial comparing Mindfulness and Heartfulness meditation programmes on stress, anxiety, depressive symptoms and wellbeing among distance-learning postgraduates.

Background: Postgraduate students are six times more susceptible to mental health challenges than the general adult population, making it imperative to identify effective initiatives to support them. This is particularly relevant for master's and doctorate students undertaking distance-learning programmes as this is a dimension of the student experience that remains unexplored. Meditation practices such as those included in Mindfulness and Heartfulness programmes have been shown to improve university students' mental health and wellbeing even when delivered via videoconferencing. However, the efficacy of these approaches remains under-investigated among distance learning postgraduates. Objectives: This study aims to explore the impact of an online synchronous Mindfulness-based intervention (MBI) compared to a Heartfulness-based intervention (HBI) on distance-learning postgraduate students' mental health and wellbeing using randomised controlled trial (RCT) design. Methods: The MBI included guided meditations, emphasizing present moment focus through breathwork and body scan exercises, compassion and non-judgmental observations. The HBI included a heart-focused form of silent meditation, with additional mental exercises aimed to facilitate the clearing and release of impressions. Weekly live online instructor-led group sessions facilitated access across 17 countries on six continents. In an initially powered RCT using block randomisation, Results: In line with hypotheses, the group × time interaction was not statistically significant for primary outcomes, providing no indication of differential change between interventions. Both MBI and HBI were associated with significant improvements in stress, anxiety, depressive symptoms and wellbeing in postgraduates over time, established through secondary within-group outcomes at T2. At T3, improvements were maintained for wellbeing and stress through ITT analysis. Anxiety reductions were sustained only through Per-Protocol (PP) analysis at T3. Conclusion: These findings are consistent with comparable effects. Both HBI and MBI may be beneficial as preventative and transdiagnostic approaches for postgraduate students' mental health and wellbeing, at scale, and remotely with a global reach.