Education 【 display / non-display 】

Education 【 display / non-display 】

• 2011

  -

  2013

  Sapporo Medical University   Graduate School of Health Sciences   神経・精神機能学分野  

• 2009

  -

  2011

  Sapporo Medical University   Graduate School of Health Sciences   地域リハビリテーション分野  

Degree 【 display / non-display 】

Degree 【 display / non-display 】

• 2013.03   Sapporo Medical University   博士

Research Experience 【 display / non-display 】

Research Experience 【 display / non-display 】

• 2024.04

  -

  Now

  Sapporo Medical University   School of Health Sciences Department of Physical Therapy   准教授

• 2022.04

  -

  Now

  National Cancer Center   がん対策研究所 疫学研究部   外来研究員

• 2022.04

  -

  2024.03

  Sapporo Medical University   School of Health Sciences Department of Physical Therapy   講師

• 2020.04

  -

  2022.03

  国立がん研究センター 社会と健康研究センター コホート研究部 研究員  

• 2019.10

  -

  2020.03

  National Cancer Center   Epidemiology Division, Center for Public Health Sciences   Researcher

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Professional Memberships 【 display / non-display 】

Professional Memberships 【 display / non-display 】

• 2020

  -

  Now

  日本癌学会

• 2018

  -

  Now

  日本運動疫学会

• 2016

  -

  Now

  JAPAN EPIDEMIOLOGICAL ASSOCIATION

• 2015

  -

  Now

  JAPANESE SOCIETY OF PUBLIC HEALTH

• 　

  　

  　

  JAPANESE PHYSICAL THERAPY ASSOCIATION

Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

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

• Life sciences   Rehabilitation science  

Affiliation 【 display / non-display 】

Affiliation 【 display / non-display 】

• Sapporo Medical University   School of Health Sciences Department of Physical Therapy   准教授  

Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

• 疫学

• 理学療法

• 地域・生活環境

• 高齢者

• がん疫学

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Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Association Between Occupational Participation and Quality of Life in Japanese Older Adults

  Suguru Shimokihara, Kazuki Yokoyama, Hikaru Ihira, Yuriko Matsuzaki-Kihara, Atsushi Mizumoto, Hideyuki Tashiro, Hidekazu Saito, Keitaro Makino, Kiyotaka Shimada, Kosuke Yama, Ryo Miyajima, Takeshi Sasaki, Nozomu Ikeda

  OTJR: Occupational Therapy Journal of Research ( SAGE Publications )   2025.03

  　View Summary

  Positive associations between occupational participation and quality of life (QoL) are known in various populations, but there are few reports in older adults in Japan. To quantify the association between occupational participation in meaningful occupations and QoL among Japanese community-dwelling older adults. A self-administered questionnaire was sent to 626 older adults. QoL was assessed using the World Health Organization (WHO)-five well-being index, and occupational participation in meaningful occupations was measured with the self-administered occupational performance index. The association between occupational participation and QoL was analyzed. Among 367 participants, significant associations were found between occupational participation in meaningful occupations and QoL. In addition, participants with lower QoL exhibited lower levels of occupational participation in occupational control, occupational balance, and satisfaction of performance domains. There is a positive association between occupational participation and QoL among Japanese older adults. Occupational therapists should prioritize occupational participation to support the well-being of older adults.

  DOI

• Association Between the Use of Information and Communication Technology Tools and Each Domain of Cognitive Function Among Community-Dwelling Older Adults: A Prospective Cohort Study

  Kazuki Yokoyama, Hikaru Ihira, Suguru Shimokihara, Yuriko Matsuzaki-Kihara, Atsushi Mizumoto, Hideyuki Tashiro, Hidekazu Saito, Keitaro Makino, Shunpei Katsuura, Kiyotaka Shimada, Kosuke Yama, Ryo Miyajima, Takeshi Sasaki, Nozomu Ikeda

  Cureus ( Springer Science and Business Media LLC )   2025.02

  DOI

• Effects of Walking-Only Intervention on Physical Function, Fall-Related Outcomes, and Health-Related Quality of Life in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis.

  Tomoya Ishigaki, Shogo Misu, Toshinori Miyashita, Daisuke Matsumoto, Midori Kamiya, Akio Okamae, Tatsuya Ogawa, Hikaru Ihira, Yoshiaki Taniguchi, Takeshi Ohnuma, Tomohisa Chibana, Natsu Morikawa, Tome Ikezoe, Hyuma Makizako

  Journal of aging and physical activity     1 - 13  2024.08  [Refereed]  [International journal]

  　View Summary

  This study aimed to determine the effects of walking-only intervention (walking was the only exercise in which people participated) on physical function, fall-related outcomes, and health-related quality of life in community-dwelling older adults. We conducted a systematic search across five electronic databases, assessing risk of bias using Minds Manual for Guideline Development. Meta-analyses were performed, and pooled standardized mean differences were calculated. Nine studies (a total of 1,309 participants) were included, showing that walking-only interventions improved walking endurance (standardized mean difference: 1.11, 95% confidence interval: [0.08, 2.15]) and health-related quality of life (standardized mean difference: 0.71, 95% confidence interval: [0.18, 1.25]). However, there were no significant improvements in other outcomes. The certainty of the evidence based on the Grading of Recommendations, Assessment, Development, and Evaluation approach for all outcomes was graded as very low, primarily due to significant inconsistency and imprecision. Our results suggest that walking-only intervention can be effective for enhancing walking endurance and health-related quality of life for community-dwelling older adults. Further studies are required to investigate the effects of walking-only intervention. This need stems from the limited number of randomized controlled trials, heterogeneous intervention settings and results, and the very low certainty of the evidence.

  DOI PubMed

• Plasma Albumin, Bilirubin, and Uric Acid and the Subsequent Risk of Cancer: A Case-Cohort Study in the Japan Public Health Center-based Prospective Study.

  Hikaru Ihira, Shiori Nakano, Taiki Yamaji, Ryoko Katagiri, Norie Sawada, Manami Inoue, Shoichiro Tsugane, Motoki Iwasaki

  American journal of epidemiology    2024.05  [International journal]

  　View Summary

  Several epidemiological studies have investigated the circulating levels of albumin, bilirubin, and uric acid (UA) in relation to cancer risk; however, they have provided equivocal evidence. In this prospective case-cohort study, we aimed to explore the association of plasma albumin, bilirubin, and UA levels with cancer incidence. We measured the plasma levels of albumin, bilirubin, and UA and investigated their association with cancer incidence in 3,584 cases and 4,270 randomly selected participants with a median follow-up of 15.8 years. The adjusted hazard ratios (HR) and 95% confidence intervals (CI) of total cancer for the highest (Q4) versus lowest quartile (Q1) was 0.77 (95% CI: 0.67-0.90, P for trend: <0.001) for albumin. This association was attenuated after excluding liver cancer cases with lower plasma albumin levels. Plasma bilirubin levels were positively related to liver cancer but inversely to total cancer after excluding liver cancer with adjusted HR Q4 vs. Q1 of 0.86 (95% CI: 0.74-0.99, P for trend = 0.015). Plasma UA levels were not dose-responsively associated with total cancer risk. Higher plasma bilirubin levels were associated with a decreased risk of total cancer after excluding liver cancer, which is likely attributed to the antioxidant properties of bilirubin.

  DOI PubMed

• 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

  　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

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Books and Other Publications 【 display / non-display 】

Books and Other Publications 【 display / non-display 】

• 高齢者理学療法

  井平 光( Part： Contributor, 5章 疾患における高齢者理学療法)

  医歯薬出版  2017

• フレイルの予防とリハビリテーション

  Ihira Hikaru( Part： Contributor, フレイル予防の実践例から学ぶ)

  医歯薬出版株式会社  2015.09

• 運動による脳の制御－認知症予防のための運動－

  Ihira Hikaru( Part： Contributor, 第2章 認知症の発症メカニズムと予防（改善）のメカニズム)

  杏林書院  2015.07

• 基礎からわかる軽度認知障害（MCI）－効果的な認知庄予防を目指して－

  井平 光( Part： Contributor, 第3章 MCIの認知機能の特徴)

  医学書院  2015.04

• サルコペニアと運動 エビデンスと実践

  井平 光( Part： Contributor, 急性期患者におけるサルコペニアの運動療法)

  医歯薬出版株式会社  2014.05

Misc 【 display / non-display 】

Misc 【 display / non-display 】

• 地域在住高齢者のがん罹患に関する自己報告の妥当性検証

  井平 光, 牧野 圭太郎, 木原 由里子, 志水 宏太郎, 山口 亨, 伊藤 一成, 田井 啓太, 牧迫 飛雄馬, 島田 裕之, 古名 丈人

  理学療法学 ( (公社)日本理学療法士協会 )  44 ( Suppl.2 ) P - 1  2017.04

• 外来化学療法を施行中の進行性がん患者に対する理学療法介入の効果検証 ランダム化比較試験

  井平 光, 牧野 圭太郎, 松田 夕香, 小野 道洋, 石川 和真, 佐藤 昌則, 石合 純夫, 加藤 淳二, 古名 丈人

  理学療法学 ( (公社)日本理学療法士協会 )  43 ( Suppl.2 ) O - 5  2016.10

• 地域在住高齢者における身体機能が転倒恐怖感に及ぼす影響

  石田 豊朗, 井平 光, 牧野 圭太郎, 木原 由里子, 志水 宏太郎, 伊藤 一成, 山口 亨, 古名 丈人

  理学療法学 ( (公社)日本理学療法士協会 )  43 ( Suppl.2 ) O - 2  2016.10

• 積雪寒冷地域に住む後期高齢者の冬期間の身体活動量低下がその後3年間の認知機能の変化に及ぼす影響 地域在住後期高齢者の冬期間の身体活動量低下がその後3年間の認知機能の変化に及ぼす影響

  牧野 圭太郎, 島田 裕之, 牧迫 飛雄馬, 井平 光, 木原 由里子, 石田 豊朗, 志水 宏太郎, 伊藤 一成, 山口 亨, 古名 丈人

  理学療法学 ( (公社)日本理学療法士協会 )  43 ( Suppl.2 ) O - 2  2016.10

• 地域在住後期高齢者における身体活動量の縦断調査と関連要因の検討

  伊藤 一成, 井平 光, 牧野 圭太郎, 木原 由里子, 石田 豊朗, 志水 宏太郎, 山口 亨, 牧迫 飛雄馬, 島田 裕之, 古名 丈人

  理学療法学 ( (公社)日本理学療法士協会 )  43 ( Suppl.2 ) P - 2  2016.10

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Awards 【 display / non-display 】

Awards 【 display / non-display 】

• 第3回日本予防理学療法学会学術集会学術集会長賞

  2017.05   日本理学療法士協会   外来化学療法を施行中の進行性がん患者に対する理学療法介入の効果検証

  Winner： 井平 光

• 第48回日本理学療法学会大会優秀賞

  2013.10   日本理学療法士協会   ミスマッチ陰性電位測定による地域在住高齢者の前注意過程の脳活動解析－姿勢制御時の運動機能と認知機能との相互関係－

  Winner： 井平 光

Research Projects 【 display / non-display 】

Research Projects 【 display / non-display 】

• パーキンソン病患者における疲労の要因分析と管理下における運動療法の効果

  基盤研究(C)

  Project Year :

  2025.04

  -

  2030.03

   

  安田圭佑, 菅原和広, 井平 光

• 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

• がんリハビリテーションの回復過程に影響を及ぼす生活要因：電子化医療情報による解析

  基盤研究(C)

  Project Year :

  2021.04

  -

  2024.03

   

  井平 光

  　View Summary

  がんリハビリテーションの回復過程に影響を及ぼす関連要因を、前向きコホート研究によって検証した研究はなく、早期の社会復帰を見据えた、三次予防に関連する生活要因を探索することが求められている。本研究では、地域在住の約11万人を対象とし、生活習慣に関するアンケート情報と、入退院時の電子化医療情報を用いて、がんリハビリテーションの回復過程に影響を与える生活習慣および生活環境を明らかにすることで、早期の社会復帰に資する具体的な改善策を提案することを目的とする。 2011年から開始された次世代多目的コホート研究（JPHC-NEXT）のベースライン調査に参加し同意を得た、40～74歳の男女約11万人を対象とする。現在、がんリハビリテーションを実施するがん患者の同定のため、診療報酬明細（レセプト）情報から把握されるがん罹患のアルゴリズムの妥当性を検証している。 この妥当性が確認された後、診療行為明細情報のレセプト電算処理システム用コード[180033110]（がん患者リハビリテーション料）で請求があった場合に、がんリハビリテーションを実施したと定義する。また、がん患者リハビリテーション料の算定条件を満たしていない施設が、がん患者にリハビリテーションを実施する場合には、「廃用症候群リハビリテーション料」として算定されること多いため、「がん」の主傷病名で「廃用症候群リハビリテーション料」が請求されている場合も、がんリハビリテーションの実施として定義する。 次年度は、上記の通りに同定されたがんリハビリテーション実施者について、電子化医療情報から把握できる情報（年齢、性別、入院日、病名情報、手術名、診療行為名、行為回数、退院日、および入退院時のADLスコア等）と質問票から得られた生活習慣の情報を突合したデータセットを構築する計画である。

• Lifestyle related to recovery process of rehabilitation using electronic medical information

  Grant-in-Aid for Early-Career Scientists

  Project Year :

  2018.04

  -

  2021.03

   

  Ihira Hikaru

  　View Summary

  This large-scale cohort study examined the association between pre-hospital lifestyle and the process of rehabilitation using electronic medical information. As for the rehabilitation type frequency, musculoskeletal rehabilitation was the most common. Approximately 30% of the participants showed improvement in activities of daily living (ADL) during hospitalization. Additionally, we found that lower ADL during hospitalization may be related to an existing history of diabetes. In the future, it will be necessary to examine the association between changes in ADL and lifestyle in rehabilitation by disease and propose specific lifestyles to prevent severe disability and early social reinstatement.

• 外来化学療法施行中のがん患者に対する在宅理学療法の効果検証－ランダム化比較試験－

  Project Year :

  2014.04

  -

  2015.03

   

  井平 光

  Authorship： Principal investigator

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