AUTHOR=Kosugi Teppei , Ninomiya Akira , Nagaoka Maki , Hashimoto Zenta , Sawada Kyosuke , Park Sunre , Fujisawa Daisuke , Mimura Masaru , Sado Mitsuhiro 

TITLE=Effectiveness of Mindfulness-Based Cognitive Therapy for Improving Subjective and Eudaimonic Well-Being in Healthy Individuals: A Randomized Controlled Trial

JOURNAL=Frontiers in Psychology

VOLUME=Volume 12 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.700916

DOI=10.3389/fpsyg.2021.700916

ISSN=1664-1078

ABSTRACT=Objectives 
Better subjective and eudaimonic well-being fosters better health conditions. Several studies have confirmed that mindfulness-based interventions are effective for improving well-being; however, the samples examined in these studies have been limited to specific populations, and the studies only measured certain aspects of well-being rather than the entire construct. Additionally, few studies have examined the effect of mindfulness-based cognitive therapy on subjective well-being. The present study examines the feasibility of mindfulness-based cognitive therapy and its effectiveness for improving subjective and eudaimonic well-being among community residents. 
Methods 
The study design featured an eight-week randomized, waiting-list controlled, parallel-group study. Eight weekly mindfulness classes, followed by two monthly classes, were provided for healthy individuals aged 20–65 years who had a Satisfaction with Life Scale score of less than 25. This trial was registered with the University Hospital Medical Information Network Clinical Trials Registry (ID: UMIN000031885, URL: https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000036376)
Results 
The results showed that life evaluation and mindfulness skills were significantly improved at eight weeks, and this effect was maintained up to the end of the follow-up period. Positive affect and the eudaimonic well-being were significantly improved at 16 weeks. 
Conclusions 
Eight weeks of MBCT with a two-month follow-up period improves cognitive and affective aspects of subjective and eudaimonic well-being in healthy individuals. The order of improvement was cognitive, positive affective, and eudaimonic. To verify these findings, multi-center randomized controlled trials with active control groups and longer follow-up periods are warranted.