Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators

Abstract Background Mindfulness-based interventions are increasingly being implemented worldwide for problems with depression and anxiety, and they have shown evidence of efficacy. However, few studies have examined the effects of a mindfulness-based group therapy based on standard programs for depr...

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Main Authors: Toru Takahashi, Fukiko Sugiyama, Tomoki Kikai, Issaku Kawashima, Siqing Guan, Mana Oguchi, Taro Uchida, Hiroaki Kumano
Format: Article
Language:English
Published: BMC 2019-02-01
Series:BioPsychoSocial Medicine
Subjects:
Online Access:http://link.springer.com/article/10.1186/s13030-019-0145-4
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author Toru Takahashi
Fukiko Sugiyama
Tomoki Kikai
Issaku Kawashima
Siqing Guan
Mana Oguchi
Taro Uchida
Hiroaki Kumano
author_facet Toru Takahashi
Fukiko Sugiyama
Tomoki Kikai
Issaku Kawashima
Siqing Guan
Mana Oguchi
Taro Uchida
Hiroaki Kumano
author_sort Toru Takahashi
collection DOAJ
description Abstract Background Mindfulness-based interventions are increasingly being implemented worldwide for problems with depression and anxiety, and they have shown evidence of efficacy. However, few studies have examined the effects of a mindfulness-based group therapy based on standard programs for depression and anxiety until follow-up in Japan. This study addresses that gap. Furthermore, this study explored the mechanisms of action, focusing on mindfulness, mind wandering, self-compassion, and the behavioral inhibition and behavioral activation systems (BIS/BAS) as possible mediators. Methods We examined 16 people who suffered from depression and/or anxiety in an 8-week mindfulness group therapy. Measurements were conducted using questionnaires on depression and trait-anxiety (outcome variables), mindfulness, mind wandering, self-compassion, and the BIS/BAS (process variables) at pre- and post-intervention and 2-month follow-up. Changes in the outcome and process variables were tested, and the correlations among the changes in those variables were explored. Results Depression and anxiety decreased significantly, with moderate to large effect sizes, from pre- to post-intervention and follow-up. In process variables, the observing and nonreactivity facets of mindfulness significantly increased from pre- to post-intervention and follow-up. The nonjudging facet of mindfulness and self-compassion significantly increased from pre-intervention to follow-up. Other facets of mindfulness, mind wandering, and the BIS/BAS did not significantly change. Improvements in some facets of mindfulness and self-compassion and reductions in BIS were significantly correlated with decreases in depression and anxiety. Conclusions An 8-week mindfulness group therapy program may be effective for people suffering from depression and anxiety in Japan. Mindfulness and self-compassion may be important mediators of the effects of the mindfulness group therapy. Future studies should confirm these findings by using a control group. Trial registration University Hospital Medical Information Network (UMIN CTR) UMIN000022966. Registered July 1, 2016, https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000026425
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spelling doaj.art-df8082dbc89f49d499d68c4a6c02d1182022-12-22T02:43:43ZengBMCBioPsychoSocial Medicine1751-07592019-02-0113111010.1186/s13030-019-0145-4Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediatorsToru Takahashi0Fukiko Sugiyama1Tomoki Kikai2Issaku Kawashima3Siqing Guan4Mana Oguchi5Taro Uchida6Hiroaki Kumano7Graduate School of Human Sciences, Waseda UniversityFaculty of Human Studies, Bunkyo Gakuin UniversityGraduate School of Human Sciences, Waseda UniversityATR Brain Information Communication Research Laboratory GroupGraduate School of Human Sciences, Waseda UniversityGraduate School of Human Sciences, Waseda UniversitySchool of Human Sciences, Waseda UniversityFaculty of Human Sciences, Waseda UniversityAbstract Background Mindfulness-based interventions are increasingly being implemented worldwide for problems with depression and anxiety, and they have shown evidence of efficacy. However, few studies have examined the effects of a mindfulness-based group therapy based on standard programs for depression and anxiety until follow-up in Japan. This study addresses that gap. Furthermore, this study explored the mechanisms of action, focusing on mindfulness, mind wandering, self-compassion, and the behavioral inhibition and behavioral activation systems (BIS/BAS) as possible mediators. Methods We examined 16 people who suffered from depression and/or anxiety in an 8-week mindfulness group therapy. Measurements were conducted using questionnaires on depression and trait-anxiety (outcome variables), mindfulness, mind wandering, self-compassion, and the BIS/BAS (process variables) at pre- and post-intervention and 2-month follow-up. Changes in the outcome and process variables were tested, and the correlations among the changes in those variables were explored. Results Depression and anxiety decreased significantly, with moderate to large effect sizes, from pre- to post-intervention and follow-up. In process variables, the observing and nonreactivity facets of mindfulness significantly increased from pre- to post-intervention and follow-up. The nonjudging facet of mindfulness and self-compassion significantly increased from pre-intervention to follow-up. Other facets of mindfulness, mind wandering, and the BIS/BAS did not significantly change. Improvements in some facets of mindfulness and self-compassion and reductions in BIS were significantly correlated with decreases in depression and anxiety. Conclusions An 8-week mindfulness group therapy program may be effective for people suffering from depression and anxiety in Japan. Mindfulness and self-compassion may be important mediators of the effects of the mindfulness group therapy. Future studies should confirm these findings by using a control group. Trial registration University Hospital Medical Information Network (UMIN CTR) UMIN000022966. Registered July 1, 2016, https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000026425http://link.springer.com/article/10.1186/s13030-019-0145-4MindfulnessDepressionAnxietyMind wanderingSelf-compassionBIS/BAS
spellingShingle Toru Takahashi
Fukiko Sugiyama
Tomoki Kikai
Issaku Kawashima
Siqing Guan
Mana Oguchi
Taro Uchida
Hiroaki Kumano
Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
BioPsychoSocial Medicine
Mindfulness
Depression
Anxiety
Mind wandering
Self-compassion
BIS/BAS
title Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
title_full Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
title_fullStr Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
title_full_unstemmed Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
title_short Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators
title_sort changes in depression and anxiety through mindfulness group therapy in japan the role of mindfulness and self compassion as possible mediators
topic Mindfulness
Depression
Anxiety
Mind wandering
Self-compassion
BIS/BAS
url http://link.springer.com/article/10.1186/s13030-019-0145-4
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