Yamada, Masashi

写真a

Affiliation

School of Medicine, Department of Neuropsychiatry (Shinanomachi)

Position

Project Assistant Professor (Non-tenured)/Project Research Associate (Non-tenured)/Project Instructor (Non-tenured)

External Links
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Career 【 Display / hide 】

  • 2013.04
    -
    2015.03

    国立国際医療研究センター, 初期研修医

  • 2015.04
    -
    2017.03

    慶應義塾大学病院, 精神・神経科学教室, 後期研修医

  • 2017.04
    -
    2019.03

    国家公務員共済組合連合会　立川病院, 精神科

  • 2019.04
    -
    2021.03

    医療法人社団じうんどう　慈雲堂病院, 精神科

  • 2021.04
    -
    Present

    慶應義塾大学, 医学部　精神・神経科学教室, 特任助教

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Academic Background 【 Display / hide 】

  • 2001.04
    -
    2005.03

    Keio University, 環境情報学部

    University, Graduated

  • 2007.04
    -
    2013.03

    Keio University, 医学部

    University, Graduated

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Papers 【 Display / hide 】

  • Literature Review on Factors for Achieving Dialogicality in Open Dialogue

    山田成志

    産業精神保健 (日本産業精神保健学会)  32 ( 3 ) 292 - 297 2024.09

    Research paper (scientific journal), Single Work, Lead author, Accepted

  • Usability of Mindfulness Programs in the Workplace

    山田成志, 佐渡充洋

    産業精神保健 (日本産業精神保健学会)  31 ( 3 ) 121 - 126 2023.09

    Research paper (scientific journal), Joint Work, Lead author

  • Ethnography of Mindfulness Interventions in the Workplace

    山田成志

    精神療法 (金剛出版)  48 ( 5 ) 650 - 652 2022.10

    Research paper (scientific journal), Single Work, Lead author

  • Effectiveness and Cost-effectiveness of Online Brief Mindfulness-based Cognitive Therapy for the Improvement of Productivity in the Workplace: Study Protocol for a Randomized Controlled Trial

    Sado M., Yamada M., Ninomiya A., Nagaoka M., Goto N., Koreki A., Nakagawa A., Segal Z., Mimura M.

    JMIR Research Protocols (JMIR Research Protocols)  11 ( 6 )  2022.06

    　View Summary

    Background: Numerous studies have demonstrated the effectiveness of mindfulness-based programs (MBPs) among both clinical and nonclinical populations. These data document positive impacts in the workplace, including reducing perceived stress and burnout and increasing well-being. However, the effectiveness for productivity, which is of most interest to managers and administrators, is still unclear. In addition, MBPs in the workplace tend to be modified by reducing the number of the program sessions or delivering content online to improve accessibility. To date, however, the impact of MBPs that feature these modifications on productivity in the workplace has not been investigated. Objective: The study aims to investigate the effectiveness and cost-effectiveness of online-delivered brief mindfulness-based cognitive therapy (bMBCT) for improving productivity and other work-related outcomes among healthy workers compared to the waitlist control. Methods: We will conduct a 4-week randomized controlled trial (RCT) with a 6-month follow-up. Employees are included in the study if they (1) are between the ages of 20 and 65 years and (2) work longer than 30 hours weekly. Employees are randomly allocated to either the bMBCT group or the waitlist control group. The primary outcome of the study is the mean difference of productivity measured by the World Health Organization Health and Work Performance Questionnaire (WHO-HPQ) between the groups at 4, 16, and 28 weeks. Secondary outcomes include several clinical outcomes and health economics evaluation. Results: We started recruiting participants in August 2021, and the intervention began in October 2021. A total of 104 participants have been enrolled in the study as of October 2021. The intervention is scheduled to be completed in December 2023. Data collection will be completed by the end of January 2024. Conclusions: The novelty of the study is that (1) it will investigate bMBCT’s effectiveness on productivity, which is still unclear, and (2) samples are recruited from 3 companies in different industries. The limitations of the study are that (1) all measures assessed are in self-report format and (2) we lack an active control group. This study has the potential to provide new data on the relationship between MBPs and occupational health and productivity.

  • Effectiveness of Mindfulness-Based Cognitive Therapy with Follow-Up Sessions for Pharmacotherapy-Refractory Anxiety Disorders: Protocol for a Feasibility Randomized Controlled Trial

    Sado M., Ninomiya A., Nagaoka M., Koreki A., Goto N., Sasaki Y., Takamori C., Kosugi T., Yamada M., Park S., Sato Y., Fujisawa D., Nakagawa A., Mimura M.

    JMIR Research Protocols (JMIR Research Protocols)  11 ( 1 )  2022.01

    　View Summary

    Background: Augmented mindfulness-based cognitive therapy (MBCT) with treatment as usual (mainly pharmacotherapy) is reported to be effective after treatment for anxiety disorders. However, whether its effectiveness persists in the long term is unclear. Objective: This study aims to examine the feasibility, acceptability, and effectiveness of a follow-up program by conducting a feasibility randomized controlled trial (RCT) that compares augmented MBCT with follow-up sessions and that without follow-up sessions in preparation for a definitive RCT. Methods: The study involves an 8-week MBCT with a 10-month follow-up. Patients aged 20 to 65 years who meet the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) criteria for panic disorder, agoraphobia, or social anxiety disorder, which is not remitted with usual treatment for at least 4 weeks, will be included in the study and randomly allocated to receive augmented MBCT with follow-up sessions or augmented MBCT without follow-up sessions. For this feasibility RCT, the primary outcomes are (1) study inclusion rate, (2) dropout rate, (3) attendance rate, and (4) mean and standard deviation of several clinical measures at 8 weeks and 5, 8, and 12 months. Results: We started recruiting participants in January 2020, and 43 participants have been enrolled up to January 2021. The study is ongoing, and data collection will be completed by May 2022. Conclusions: This study is novel in terms of its design, which compares augmented MBCT with and without follow-up sessions. The limitations of the trial are as follows: (1) mixed participants in terms of the delivery mode of the intervention, and (2) lack of a pharmacotherapy-alone arm. Owing to its novelty and significance, this study will provide fruitful knowledge for future definitive RCTs.

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Presentations 【 Display / hide 】

  • The Current State of Subjective Well-being of Nursing Home Employees in Japan and Its Associated Factors

    山田成志, 二宮朗, 後藤菜穂, 佐渡充洋

    The 43rd Annual Meeting of Japan Society for Dementia Research, 

    2024.11
    , 

    Poster presentation

  • Feasibility Study of a Basic Mindfulness Therapy Workshop for Healthcare Professionals

    山田成志, 後藤菜穂, 永岡麻貴, 田村法子, 朴順禮, 藤澤大介, 佐渡充洋

    日本マインドフルネス学会第11回大会, 

    2024.10
    , 

    Poster presentation

  • マインドフルネス認知療法　―理論と実践

    佐渡 充洋,二宮 朗,山田 成志,永岡 麻貴

    第24回日本認知療法・認知行動療法学会, 

    2024.07
    , 

    Symposium, workshop panel (nominated)

  • A case in which brief cognitive-behavioral therapy was introduced during a return-to-work interview and contributed to the prevention of relapse

    Masashi Yamada, Akira Ninomiya, Mihoko Shibuya, Mitsuhiro Sado

    The 23rd Annual Convention of The Japanese Association for Cognitive Therapy, 

    2023.12
    , 

    Poster presentation

  • マインドフルネス認知療法　―理論と実践

    佐渡 充洋,二宮 朗,山田 成志,永岡 麻貴

    第23回日本認知療法・認知行動療法学会, 

    2023.12
    , 

    Symposium, workshop panel (nominated)

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Awards 【 Display / hide 】

  • 精神科専門医研修中の医師による演題　優秀発表賞

    2017.06, 日本精神神経学会, Remote Exposure Response Prevention for OCD: A systematic review and meta-analysis

    Type of Award： Award from Japanese society, conference, symposium, etc.

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Social Activities 【 Display / hide 】

  • 安心できる場作りのために‐オープンダイアローグをヒントに‐

    立川市, 立川市介護支援専門員連絡会, 

    , 
    2018.09
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Committee Experiences 【 Display / hide 】

  • 2017.04
    -
    Present

    運営委員, オープンダイアローグ・ネットワーク・ジャパン

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