Education 【 display / non-display 】

Education 【 display / non-display 】

• 2012

  -

  2015

  Sapporo Medical University   Graduate School of Health Sciences (Doctor Course)  

• 2010

  -

  2012

  Sapporo Medical University   Graduate School of Health Sciences (Master Course)  

• 2006

  -

  2010

  Sapporo Medical University   School of Health Sciences   Department of Occupational Therapy  

Degree 【 display / non-display 】

Degree 【 display / non-display 】

• 札幌医科大学   作業療法学博士

Research Experience 【 display / non-display 】

Research Experience 【 display / non-display 】

• 2023.05

  -

  Now

  Sapporo Medical University   医療人育成センター統合IR部門  

• 2022.04

  -

  Now

  Sapporo Medical University   Department of Occupational Therapy, School of Health Sciences   Lecturer

• 2017.10

  -

  Now

  Sapporo Medical University Hospital   Division of Rehabilitation   Occupational Therapist

• 2022.04

  -

  Now

  Hokkaido University   Faculty of Health Sciences, School of Medicine   Part-time Lecturer

• 2018.10

  -

  2022.03

  Sapporo Medical University   Department of Occupational Therapy, School of Health Sciences   Assistant Professor

display all >>

Professional Memberships 【 display / non-display 】

Professional Memberships 【 display / non-display 】

• 2023.07

  -

  Now

  Japanese Psuchogeriatric Society

• 2021.07

  -

  Now

  The Japan Geriatric Therapy Society

• 2021.07

  -

  Now

  日本認知症予防学会

• 2021.04

  -

  Now

  北海道公衆衛生学会

• 2019.07

  -

  Now

  日本作業科学研究会

display all >>

Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

• Life sciences   Psychiatry  

• Life sciences   Rehabilitation science  

• Life sciences   Hygiene and public health (non-laboratory)  

• Humanities & social sciences   Social welfare  

Affiliation 【 display / non-display 】

Affiliation 【 display / non-display 】

• Sapporo Medical University   保健医療学部作業療法学科   講師  

• Sapporo Medical University   医療人育成センター統合IR部門  

Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

• 若年性認知症

• ピアサポート

• Self-Stigma

• 認知症

• Self-Disclosure

display all >>

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Association between meaningful activities and behavioural and psychological symptoms of dementia among people with early-onset dementia using long-term care services

  Kazuki Yokoyama, Ryo Miyajima, Kosuke Yama, Kiyotaka Shimada, Suguru Shimokihara, Mieko Moribayashi, Noriko Hirano, Nozomu Ikeda

  Psychogeriatrics   in press  2024.11  [Refereed]

  Authorship：   Lead author  , Corresponding author

  DOI

• Association between occupational participation and depressive symptoms among middle-aged adults: A cross-sectional study in Hokkaido, Japan

  Kazuki Yokoyama, Kiyotaka Shimada, Takafumi Morimoto, Takao Ishii, Nozomu Ikeda

  Hong Kong Journal of Occupational Therapy ( SAGE Publications )  37 ( 2 ) 63 - 71  2024.06  [Refereed]

  Authorship：   Lead author  , Corresponding author

  　View Summary

  Aim This study aimed to investigate the association between occupational participation and depressive symptoms among middle-aged adults in Hokkaido, Japan. Methods Community-dwelling adults aged 40–64 years were recruited using snowball sampling, and 165 participants who returned the questionnaires and met the selection criteria were included in the analysis. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression (CES-D) scale. Occupational participation, including three domains (leisure, productivity, and self-care) and three aspects (occupational control, occupational balance, and satisfaction of performance), was assessed using Self-completed Occupational Performance Index (SOPI) questionnaire. Results Multivariate-adjusted regression analysis revealed that depressive symptoms were associated with lower occupational participation in the productivity domain (β = −0.34, p < .001), whereas analysis of each aspect of the SOPI showed a significant association of depressive symptoms with lower occupational control in productivity domain (β = −0.33, p < .001), occupational balance in productivity domain (β = −0.25, p < .001), and satisfaction with performance in leisure domain (β = −0.16, p = .045) and productivity domain (β = −0.35, p < .001). Conclusion Depressive symptoms was significantly associated with low occupational participation in productivity domain in middle-aged adults. In the domains of leisure and self-care, significant associations were found only between depression symptoms and satisfaction of performance. Occupational therapy interventions for middle-aged adults targeting the maintenance and improvement of participation in productive activities may help preventing depressive symptoms.

  DOI

• Development of the Self-Assessment Self-Disclosure Questionnaire to Examine the Association between Self-Disclosure and Frailty among Community-Dwelling Older Adults in Japan

  Kazuki Yokoyama, Hikaru Ihira, Yuriko Matsuzaki-Kihara, Atsushi Mizumoto, Hideyuki Tashiro, Kiyotaka Shimada, Kosuke Yama, Ryo Miyajima, Takeshi Sasaki, Naoki Kozuka, Nozomu Ikeda

  Geriatrics ( MDPI AG )  9 ( 3 ) 67 - 67  2024.05  [Refereed]

  Authorship：   Lead author  , Corresponding author

  　View Summary

  Self-disclosure is the attitude of communicating one’s experiences and condition to others and is an indicator of mental health and an open personality. Frailty, characterized by reduced physical and psychological resistance, predicts the incidence of dependency and mortality. Although low self-disclosure may be associated with frailty, there is no scale to measure older adults’ self-disclosure. This cross-sectional study assessed the validity of a self-assessment self-disclosure questionnaire and examined the association between the content of self-disclosures to friends and acquaintances and frailty among community-dwelling older adults. A total of 237 adults aged ≥65 in Japan were surveyed using a mailed self-administered questionnaire in 2021. The self-disclosure scale consisted of 10 items and showed adequate validity. Participants were classified into a robust group (n = 117, women 57.3%) and a frailty group (n = 120, women 73.3%) using the Kihon Checklist. After adjusting for covariates, multivariate-adjusted logistic regression models revealed frailty was associated with lower self-disclosure of recent positive events, motivation and strengths (indicating strong points) in life, relationships with family and relatives, experiences of work and social activities, and financial status. The proposed questionnaire must still be further tested in other populations, but our initial results may contribute to preventing frailty and improving mental health among community-dwelling older adults.

  DOI

• Influences of the Coronavirus Disease (COVID-19) Pandemic on Occupational Therapy: A Content Analysis of Long-Term Care Insurance Service Facilities in Hokkaido

  Kazuki Yokoyama, Hidekazu Saito, Takafumi Morimoto, Hisaaki Ota, Nozomu Ikeda

  Asian Journal of Occupational Therapy ( Japanese Association of Occupational Therapists )  18 ( 1 ) 147 - 155  2022.09  [Refereed]

  Authorship：   Lead author  , Corresponding author

  DOI

• Association between Productive Roles and Frailty Factors among Community-Dwelling Older Adults: A Cross-Sectional Analysis

  Kazuki Yokoyama, Hikaru Ihira, Yuriko Matsuzaki-Kihara, Atsushi Mizumoto, Ryo Miyajima, Takeshi Sasaki, Naoki Kozuka, Nozomu Ikeda

  International Journal of Environmental Research and Public Health ( MDPI AG )  19 ( 17 ) 10838 - 10838  2022.08  [Refereed]  [International journal]

  Authorship：   Lead author  , Corresponding author

  　View Summary

  The employment rate of older people in Japan is expected to increase in the future owing to the increase in the retirement age. Preventing frailty is imperative to maintaining productive roles of older adults. Therefore, this study aimed to examine the association between productive roles and frailty factors among community-dwelling older adults. A total of 135 older adults, enrolled in 2017, participated in the study. Productive roles and domains related to frailty were measured. We measured usual gait speed and grip strength for the physical domain; Mini-Mental State Examination (MMSE) and Geriatric Depression Scale (GDS-15) scores for the cognitive and mental domains; and social role and group activity for the social domain. Multivariate-adjusted logistic regression models revealed that having productive roles was associated with faster usual gait speed (odds ratios [OR] = 1.05; 95% confidence interval [CI], 1.01–1.08; p = 0.005) and lower GDS-15 score (OR = 0.79; 95% CI, 0.64–0.97; p = 0.023). These results suggest that health promotion to maintain gait speed and prevent depressive symptoms may contribute to maintaining productivity in community-dwelling older adults.

  DOI PubMed

display all >>

Books and Other Publications 【 display / non-display 】

Books and Other Publications 【 display / non-display 】

• Evidence Basedで考える認知症リハビリテーション2 BPSDの評価と介入戦略 [Web動画付]

  横山 和樹( Part： Contributor, 「認知症の各疾患、重症度、およびBPSDの特徴（若年性認知症）」「BPSDの評価尺度（Neuropsychiatric Inventory; NPI）」)

  医学書院  2024.10 ISBN: 4260056697

  ASIN

• White paper, Hokkaido Association of Occupational Therapists

  Kazuki Yokoyama, Chisa Ikeda, Shunpei Katsuura, Soshi Kodama, Daiki Sato, Tomoaki Shimoyama, Ryo Miyajima, Ryuta Yamada, Masato Yoshimura, Hiroyuki Fujisaka, Nanako Takahashi( Part： Joint author, ［発行責任者］担当：北海道作業療法士会の会員および調査対象者の特性，作業療法士の職務満足度に関連する要因，北海道作業療法士会に対する意識)

  Hokkaido Association of Occupational Therapists  2024.03

• 若年性認知症者受け入れ状況調査 報告書（市政等資料番号01-F03-24-505）

  横山 和樹, 宮嶋 涼, 山 功恭, 島田 清貴, 池田 望( Part： Joint author)

  札幌市保健福祉局保健福祉部  2024.03

• Handbook for assessment on psychiatric rehabilitation

  Kazuki Yokoyama( Part： Joint author, MoCA (pp. 69–72), Lazarus type Stress Coping Inventory (pp. 165–168))

  Chugai-igakusha  2023.04 ISBN: 9784498229464

• Practical case studies of dementia policies involving occupational therapists in Hokkaido ver. 1.2

  Kazuki Yokoyama( Part： Contributor, 教育機関によるフレイルと認知症の予防に向けた住民測定会の実施)

  公益社団法人 北海道作業療法士会  2023.03

display all >>

Misc 【 display / non-display 】

Misc 【 display / non-display 】

• 障害福祉サービスにおけるピアサポーターの雇用の現状とその課題

  横山 和樹

  公益財団法人 北海道科学技術総合振興センター 研究開発助成事業2023 研究成果報告書     8  2023.10

Awards 【 display / non-display 】

Awards 【 display / non-display 】

• First-place award

  2023.06   Hokkaido Association of Occupational Therapist   Relationship of frailty with occupational dysfunction and occupational balance in community dwelling elderly: Questionnaire survey during the COVID-19 pandemic

  Winner： Kazuki Yokoyama, Ryo Miyajima, Yuriko Matsuzaki-Kihara, Naoki Kozuka, Nozomu Ikeda

• 最優秀賞（野中賞）

  2021.12   日本精神障害者リハビリテーション学会   同様の疾患や障害をもつ人への自己開示量と情緒的支援ネットワークおよびリカバリーとの関連：精神疾患をもつ人を対象とした自己開示尺度を用いた検討

  Winner： 横山 和樹, 矢部 滋也, 森元 隆文, 池田 望

• 口述賞

  2015.10   第46回北海道作業療法学会  

  Winner： 横山 和樹

• 学術奨励賞

  2011.10   第42回北海道作業療法学会  

  Winner： 横山 和樹

Research Projects 【 display / non-display 】

Research Projects 【 display / non-display 】

• 社会的フレイル高齢者の抑うつや認知機能低下を予測する会話の客観的評価法の検討

  基盤研究(C)

  Project Year :

  2024.04

  -

  2028.03

   

  横山 和樹, 齊藤 秀和, 井平 光, 池田 望

• 過疎地に住む独居高齢者の認知症の行動・心理症状の早期発見・介入に向けたAI支援システムの構築補助事業

  個人研究

  Project Year :

  2024.04

  -

  2025.03

   

  横山 和樹, 井平 光, 深川 周平, 牧野 圭太郎, 近藤 敏志

  Authorship： Principal investigator

• Current Status and and its Challenges of Employment of Peer Supporters in Disability Welfare Services

  Project Year :

  2022.08

  -

  2023.03

   

  Kazuki Yokoyama, Kenichi Ogawa, Shigeya Yabe

• Influence of lifestyle changes and winter activity limitation due to COVID-19 on physical & psychological function and frailty in psychosomatic function and frailty in community dwelling older adults.

  Project Year :

  2022.06

  -

  2023.03

   

  Kazuki Yokoyama, Hikaru Ihira, Yuriko Matsuzaki-Kihara, Atsushi Mizumoto, Nozomu Ikeda

• The influence of metacognition on subjective cognitive decline in community dwelling older adults

  Project Year :

  2021.07

  -

  2022.03

   

  Kazuki Yokoyama, Ryo Miyajima, Kosuke Yama, Nozomu Ikeda

  Authorship： Principal investigator

display all >>

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• 精神障がい領域のピアスタッフが大切にしたいこと：ピアスタッフの価値と役割に関わるアクションリサーチ

  横山 和樹, 荒井 浩道, 磯田 重行, 鶉 領太郎, 佐々木 理恵, 関口 明彦, 瀬戸 麻貴, 西村 聡彦, 早川 紗耶香, 濱田 由紀, 眞嶋 栄, 矢部 滋也, 相川 章子

  日本精神障害者リハビリテーション学会 第31回東京お台場大会 

  Presentation date： 2024.12

  Event date：

  2024.12

  　

  　

• Association between meaning activity and behavioral and psychological symptoms of dementia (BPSD) among people with early-onset dementia using long-term care service.

  Kazuki Yokoyama, Ryo Miyajima, Kosuke Yama, Kiyotaka Shimada, Nozomu Ikeda

  The 58th Japanese Occupational Therapy Congress & Expo in Hokkaido 2024 

  Presentation date： 2024.11

  Event date：

  2024.11

  　

  　

• Relationship between depression and social networking service addictions, and their effects on occupational dysfunction: A cross-sectional study of medical college students

  Takafumi Morimoto, Tsukasa Murakami, Tsutomu Sasaki, Kazuki Yokoyama, Takao Ishii, Nozomu Ikeda

  The 8th Asia Pacific Occupational Therapy Congress 2024 

  Presentation date： 2024.11

  Event date：

  2024.11

  　

  　

• Employment support experienced by individuals with early-onset dementia: an ethnographic study of continuous support for employment services - type B

  Kosuke Yama, Kazuki Yokoyama, Nozomu Ikeda

  The 8th Asia Pacific Occupational Therapy Congress 2024 

  Presentation date： 2024.11

  Event date：

  2024.11

  　

  　

• Association between occupational participation and depressive symptoms among middle-aged adults in Japan: A cross-sectional study

  Kazuki Yokoyama, Kiyotaka Shimada, Takafumi Morimoto, Takao Ishii, Nozomu Ikeda

  The 8th Asia Pacific Occupational Therapy Congress 2024 

  Presentation date： 2024.11

  Event date：

  2024.11

  　

  　

display all >>

Teaching Experience 【 display / non-display 】

Teaching Experience 【 display / non-display 】

• Community and Human Liife Science Seminar  

  Graduate school of Health Sciences, Sapporo Mediacal University  

  2023.04

  -

  Now

   

• Advanced Occupational Therapy for Psychiatrics and Mental Health, Seminar  

  Graduate school of Health Sciences, Sapporo Mediacal University  

  2023.04

  -

  Now

   

• Advanced Community and Human Life Science  

  Graduate school of Health Sciences, Sapporo Mediacal University  

  2023.04

  -

  Now

   

• Advanced Occupational Therapy for Psychiatrics and Mental Health  

  Graduate school of Health Sciences, Sapporo Mediacal University  

  2023.04

  -

  Now

   

• リハビリテーション概論  

  札幌医科大学  

  2021.04

  -

  Now

   

display all >>

Committee Memberships 【 display / non-display 】

Committee Memberships 【 display / non-display 】

• 2024.07

  -

  Now

    総務部長

• 2024.06

  -

  Now

    Reviewer: Asian Journal of Occupational Therapy

• 2024.01

  -

  Now

    評議員

• 2023.03

  -

  2024.10

    第3回日本老年療法学会学術集会 準備委員長

• 2022.01

  -

  2024.06

    「作業科学研究」査読委員

display all >>

Social Activities 【 display / non-display 】

Social Activities 【 display / non-display 】

• 若年性認知症の人の受け入れ実態調査 ～介護保険サービス事業所を対象とした調査より～

  札幌市  令和6年度 若年性認知症従事者向け研修会 

  2024.12

  　

  　

• 健康な生活を維持するための社会参加について考えよう！

  札幌市中央区第１地域包括支援センター  スマイルオレンジチーム西19丁目 学びの秋講座 

  2024.09

  　

  　

• 認知症の人に対する地域支援

  札幌医科大学保健医療学部公開講座（地方公開講座），札幌市北区介護予防センター新道南 

  2024.03

  　

  　

• スマホ相談会＆頭と体力の健康測定会

  札幌市中央区社会福祉協議会 

  2024.03

  　

  　

• 令和5年度北海道障がい者ピアサポーター養成研修 ―専門研修―

  北海道障がい者ピアサポーター養成事業コンソーシアム 

  2024.01

  　

  　

display all >>

Academic Activities 【 display / non-display 】

Academic Activities 【 display / non-display 】

• Oral Presentation 2-6-1 (Occupational Science) Chair Person

  Academic society, research group, etc.

  The 8th Asia Pacific Occupational Therapy Congress  

  2024.11

  　

  　

• 若手研究者に訊くキャリア形成と日本老年療法学会

  Academic society, research group, etc.

  第3回日本老年療法学会学術集会 早期申込特典プレセミナー  

  2024.07

  　

  　

• ピアスタッフの価値と役割を考える ～ピアスタッフが大切にしたいこと～

  Competition, symposium, etc.

  第11回全国ピアスタッフの集い・分科会5（ピアスタッフの価値と役割に関する研究会 主催）  

  2023.12

  　

  　

• Occupational therapy for dementia that weaves together the individual and family

  Competition, symposium, etc.

  Review Circle on Rehabilitation for Dementia・Kazuki Yokoyama  

  2023.11