Katsuya Iijima
Biographic Data
| ID | 6163825 |
|---|---|
| NAME | Katsuya Iijima |
| GIVEN NAMES | Katsuya |
| FAMILY NAME | Iijima |
| SIGNATURE | IIJIMA K |
| AFFILIATIONS | Tokyo Metropolitan Institute of Gerontology |
| ORCID | 0000-0003-1339-5681 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2018 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
Hq4: Do Interventions and Assessments That Use Digital Health Services Prevent Sarcopenia in Older Adults?: English Translation of the Japanese Guideline for Digital Health for the Prevention and Impr…
K.I. has disclosed financial relationships with Prudential Gibraltar Financial Life Insurance Co. Ltd., Kanagawa Prefecture, NTT Docomo Inc., WELMO Co. Ltd., Hitachi Ltd., Tokyo Gas Co. Ltd., LOTTE Co. Ltd., Sunstar Inc., WELMO Co. Ltd., Maruta Foods Co. Ltd., Kewpie Corporation, EON Co. Ltd., Industry–Academia Co-creation/2021 “Habitat Innovation” Project (Hitachi Ltd.). M.A. has disclosed financial relationships with Daiichi Sankyo Co. Ltd., MS…
Community Well‐Being and Functional Disability Risk Among Older Adults: A Multilevel Analysis of 91 Municipalities in Japan
In advanced nations experiencing rapid population aging, such as Japan, maintaining supportive community environments and sustainable living conditions for older adults are urgent priorities [1]. Frailty, characterized by the accumulation of physical, psychological, and social function decline, is a reversible condition and an important target for preventing adverse health outcomes [2]. Previous practices have primarily focused on individual-leve…
Association of Nature‐Based (Satoyama) Activities and Multiple Health Outcomes Among Older Adults: A Pilot Study
“Satoyama” refers to traditional socio-ecological landscapes in rural Japan, shaped by the harmonious interaction between humans and nature, typically consisting of woodlands, farmlands, grasslands, and ponds near settlements. Satoyama areas account for about 39.4% of Japan's land and are distributed nationwide, reflecting diverse land-use patterns. They tend to appear in transitional zones between urban districts and surrounding forests, especia…
Cross‐Sectional Associations of Integrated Lifestyle‐Related Factors With Intrinsic Capacity in Community‐Dwelling Older Adults: The Kashiwa Cohort Study
Development and validation of new scales of tolerance and autonomy based on orientation toward inclusive societies: A mixed-methods study
Declining birthrates, an increasing number of older adults, and rising recognition of individuals with disabilities and various sexual orientations necessitate fostering societies where diverse individuals maintain high well-being irrespective of gender, age, parenting roles, disability, and minority or majority status. Although some scholars have developed or used scales to measure tolerance and autonomy, these existing scales are not necessaril…
Coordinate System Transformation Method for Comparing Different Types of Data in Different Dataset Using Singular Value Decomposition
In the current era of AI technology, where systems increasingly rely on big data to process vast amounts of societal information, efficient methods for integrating and utilizing diverse datasets are essential. This article presents a novel approach for transforming the feature space of different datasets through singular value decomposition (SVD) to extract common and hidden features as using the prior domain knowledge. Specifically, we apply thi…
Comparative Analysis of Frailty Risk and Associated Factors: Community-Based vs. Open Recruitment Groups
The ODK, OLS, and GS were identified as factors explaining frailty risk, and Frailty Supporters may reduce the risk of frailty
Detailed Analysis of Responses from Older Adults through Natural Speech: Comparison of Questions by AI Agents and Humans
In recent years, an increasing number of studies have begun to use conversational data in spontaneous speech to estimate cognitive function in older people. The providers of spontaneous speech with older people used to be physicians and licensed psychologists, but it is now possible to have conversations with fully automatic AI agents. However, it has not yet been clarified what differences exist in conversational communication with older people …
The Co-Design/Co-Development and Evaluation of an Online Frailty Check Application for Older Adults: Participatory Action Research with Older Adults
Frailty is an age-related condition characterized by a decline in physical capacity with an increased vulnerability to stressors. During the COVID-19 pandemic, there was considerable progression in frailty in older adults. Therefore, an online frailty check (FC) is required for continuous screening, especially acceptable to older adults. We aimed to co-design/co-develop an online FC application with FC supporters who were facilitators in a pre-ex…
Factors Affecting Care-Level Deterioration among Older Adults with Mild and Moderate Disabilities in Japan: Evidence from the Nationally Standardized Survey for Care-Needs Certification
This study aims to investigate the factors of care-level deterioration in older adults with mild and moderate disabilities using nationally standardized survey data for care-needs certification. We enrolled people aged 68 years or older, certified as support levels 1-2 (mild disability) or care levels 1-2 (moderate disability) with no cancer. The outcome was care-level deterioration after two years. The possible factors were physical and mental f…
A Pilot Survey: Oral Function as One of the Risk Factors for Physical Frailty
To prevent frailty at an early stage, assessments of oral functions, and also that of the availability of social support, are important
Model to Predict Oral Frailty Based on a Questionnaire: A Cross-Sectional Study
A statistical model to predict oral frailty based on information obtained from questionnaires might help to estimate its prevalence and clarify its determinants. In this study, we aimed to develop and validate a predictive model to assess oral frailty thorough a secondary data analysis of a previous cross-sectional study on oral frailty conducted on 843 patients aged ≥ 65 years. The data were split into training and testing sets (a 70/30 split) u…
Impact of Health Literacy on the Progression of Frailty after 4 Years among Community-Dwelling Older Adults
Health literacy (HL) promotes healthy lifestyle behaviors among older adults, and its relationship with frailty remains unclear. This study examined whether HL is a predictor of frailty progression among community-dwelling older adults. Data from two surveys conducted in 2012 and 2016 involving older residents (mean age, 71.6 ± 4.6 years) of Kashiwa City, Chiba Prefecture, Japan were used. Only healthy individuals without frailty and cognitive im…
Effects of golf training on cognition in older adults: A randomised controlled trial
BACKGROUND: Although research indicates that a physically active lifestyle has the potential to prevent cognitive decline and dementia, the optimal type of physical activity/exercise remains unclear. The present study aimed to determine the cognitive benefits of a golf-training programme in community-dwelling older adults. METHODS: We conducted a randomised controlled trial between August 2016 and June 2017 at a general golf course. Participants …
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Effects of golf training on cognition in older adults: A randomised controlled trial
BACKGROUND: Although research indicates that a physically active lifestyle has the potential to prevent cognitive decline and dementia, the optimal type of physical activity/exercise remains unclear. The present study aimed to determine the cognitive benefits of a golf-training programme in community-dwelling older adults. METHODS: We conducted a randomised controlled trial between August 2016 and June 2017 at a general golf course. Participants …
Impact of Health Literacy on the Progression of Frailty after 4 Years among Community-Dwelling Older Adults
Health literacy (HL) promotes healthy lifestyle behaviors among older adults, and its relationship with frailty remains unclear. This study examined whether HL is a predictor of frailty progression among community-dwelling older adults. Data from two surveys conducted in 2012 and 2016 involving older residents (mean age, 71.6 ± 4.6 years) of Kashiwa City, Chiba Prefecture, Japan were used. Only healthy individuals without frailty and cognitive im…
Factors Affecting Care-Level Deterioration among Older Adults with Mild and Moderate Disabilities in Japan: Evidence from the Nationally Standardized Survey for Care-Needs Certification
This study aims to investigate the factors of care-level deterioration in older adults with mild and moderate disabilities using nationally standardized survey data for care-needs certification. We enrolled people aged 68 years or older, certified as support levels 1-2 (mild disability) or care levels 1-2 (moderate disability) with no cancer. The outcome was care-level deterioration after two years. The possible factors were physical and mental f…
A Pilot Survey: Oral Function as One of the Risk Factors for Physical Frailty
To prevent frailty at an early stage, assessments of oral functions, and also that of the availability of social support, are important
Model to Predict Oral Frailty Based on a Questionnaire: A Cross-Sectional Study
A statistical model to predict oral frailty based on information obtained from questionnaires might help to estimate its prevalence and clarify its determinants. In this study, we aimed to develop and validate a predictive model to assess oral frailty thorough a secondary data analysis of a previous cross-sectional study on oral frailty conducted on 843 patients aged ≥ 65 years. The data were split into training and testing sets (a 70/30 split) u…
The Co-Design/Co-Development and Evaluation of an Online Frailty Check Application for Older Adults: Participatory Action Research with Older Adults
Frailty is an age-related condition characterized by a decline in physical capacity with an increased vulnerability to stressors. During the COVID-19 pandemic, there was considerable progression in frailty in older adults. Therefore, an online frailty check (FC) is required for continuous screening, especially acceptable to older adults. We aimed to co-design/co-develop an online FC application with FC supporters who were facilitators in a pre-ex…
Comparative Analysis of Frailty Risk and Associated Factors: Community-Based vs. Open Recruitment Groups
The ODK, OLS, and GS were identified as factors explaining frailty risk, and Frailty Supporters may reduce the risk of frailty
Detailed Analysis of Responses from Older Adults through Natural Speech: Comparison of Questions by AI Agents and Humans
In recent years, an increasing number of studies have begun to use conversational data in spontaneous speech to estimate cognitive function in older people. The providers of spontaneous speech with older people used to be physicians and licensed psychologists, but it is now possible to have conversations with fully automatic AI agents. However, it has not yet been clarified what differences exist in conversational communication with older people …
Coordinate System Transformation Method for Comparing Different Types of Data in Different Dataset Using Singular Value Decomposition
In the current era of AI technology, where systems increasingly rely on big data to process vast amounts of societal information, efficient methods for integrating and utilizing diverse datasets are essential. This article presents a novel approach for transforming the feature space of different datasets through singular value decomposition (SVD) to extract common and hidden features as using the prior domain knowledge. Specifically, we apply thi…
Hq4: Do Interventions and Assessments That Use Digital Health Services Prevent Sarcopenia in Older Adults?: English Translation of the Japanese Guideline for Digital Health for the Prevention and Impr…
K.I. has disclosed financial relationships with Prudential Gibraltar Financial Life Insurance Co. Ltd., Kanagawa Prefecture, NTT Docomo Inc., WELMO Co. Ltd., Hitachi Ltd., Tokyo Gas Co. Ltd., LOTTE Co. Ltd., Sunstar Inc., WELMO Co. Ltd., Maruta Foods Co. Ltd., Kewpie Corporation, EON Co. Ltd., Industry–Academia Co-creation/2021 “Habitat Innovation” Project (Hitachi Ltd.). M.A. has disclosed financial relationships with Daiichi Sankyo Co. Ltd., MS…
Community Well‐Being and Functional Disability Risk Among Older Adults: A Multilevel Analysis of 91 Municipalities in Japan
In advanced nations experiencing rapid population aging, such as Japan, maintaining supportive community environments and sustainable living conditions for older adults are urgent priorities [1]. Frailty, characterized by the accumulation of physical, psychological, and social function decline, is a reversible condition and an important target for preventing adverse health outcomes [2]. Previous practices have primarily focused on individual-leve…
Association of Nature‐Based (Satoyama) Activities and Multiple Health Outcomes Among Older Adults: A Pilot Study
“Satoyama” refers to traditional socio-ecological landscapes in rural Japan, shaped by the harmonious interaction between humans and nature, typically consisting of woodlands, farmlands, grasslands, and ponds near settlements. Satoyama areas account for about 39.4% of Japan's land and are distributed nationwide, reflecting diverse land-use patterns. They tend to appear in transitional zones between urban districts and surrounding forests, especia…
Cross‐Sectional Associations of Integrated Lifestyle‐Related Factors With Intrinsic Capacity in Community‐Dwelling Older Adults: The Kashiwa Cohort Study
Development and validation of new scales of tolerance and autonomy based on orientation toward inclusive societies: A mixed-methods study
Declining birthrates, an increasing number of older adults, and rising recognition of individuals with disabilities and various sexual orientations necessitate fostering societies where diverse individuals maintain high well-being irrespective of gender, age, parenting roles, disability, and minority or majority status. Although some scholars have developed or used scales to measure tolerance and autonomy, these existing scales are not necessaril…
Frailty in Older Adults (9 works) · Medicine (7 works) · Gerontology (6 works) · Nutrition and Health in Aging (6 works) · Logistic regression (4 works) · Psychology (4 works) · Computer Science (3 works) · Dementia and Cognitive Impairment Research (3 works) · Geriatric Care and Nursing Homes (3 works) · Internal Medicine (3 works)