Kazushige Ihara

ORCID: 0000-0003-3190-0290
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About
Contact & Profiles
Research Areas
  • Nutrition and Health in Aging
  • Frailty in Older Adults
  • Health disparities and outcomes
  • Dysphagia Assessment and Management
  • Dementia and Cognitive Impairment Research
  • Health and Wellbeing Research
  • Nutritional Studies and Diet
  • Balance, Gait, and Falls Prevention
  • Health and Well-being Studies
  • Cerebral Palsy and Movement Disorders
  • Physical Activity and Health
  • Chronic Disease Management Strategies
  • Diet and metabolism studies
  • Geriatric Care and Nursing Homes
  • Dental Health and Care Utilization
  • Body Composition Measurement Techniques
  • Gut microbiota and health
  • Temporomandibular Joint Disorders
  • Aging and Gerontology Research
  • Obesity, Physical Activity, Diet
  • Vestibular and auditory disorders
  • Telomeres, Telomerase, and Senescence
  • Nerve injury and regeneration
  • Autism Spectrum Disorder Research
  • Salivary Gland Disorders and Functions

Hirosaki University
2018-2025

Tokyo Metropolitan Institute of Gerontology
2009-2024

National Institute of Biomedical Innovation, Health and Nutrition
2019

Toho University
2006-2018

National Rehabilitation Center for Persons with Disabilities
2002

National Rehabilitation Center
2002

Showa University
1998

The gut microbiota is reported to be related obesity, and visceral fat strongly associated with cardiovascular disease overall mortality. However, the association between obesity has mainly been studied using body mass index (BMI) as a proxy for obesity. We investigated relationship of both BMI stratified by sex in population-based cross-sectional study Japanese men women 20-76 years age (n = 1001). Women higher area (VFA) harboured relative abundance Firmicutes phylum (P trend <0.001) lower...

10.1038/s41522-019-0101-x article EN cc-by npj Biofilms and Microbiomes 2019-10-04

Objectives: This study aimed to determine the relationship between objective chewing ability and nutritional status of Japanese community-dwelling elders. Design: A cross-sectional study. Participants: total 509 elders living in Tokyo metropolitan area participated a comprehensive survey conducted October 2013. Measurements: The basic characteristics were sex, age, body mass index. Undernutrition was examined through serum albumin levels. Chewing color-changeable xylitol gum by evaluating...

10.3390/ijerph18031216 article EN International Journal of Environmental Research and Public Health 2021-01-29

Social isolation is a particular problem among older people and social participation may reduce future isolation. However, it unclear which types of activities level are effective. This study examines the relationship between Japanese by employing 3-year longitudinal study.A mail survey was sent to 3,518 community-dwelling in an urban area 2014 (baseline: BL). We then conducted follow-up on respondents who were non-isolated at BL 2017 (follow-up: FL), with being defined as contact others...

10.1371/journal.pone.0222887 article EN cc-by PLoS ONE 2019-09-20

This study investigated the association between oral hypofunction and malnutrition among community-dwelling older adults.Oral hypofunction, a 7-component phenotype of clinical features health, has been described in Japan. Data about its with nutritional status are limited.This cross-sectional enrolled 715 adults (mean age, 73.5 years; range, 65-91 years) from Otassha Study. Oral was defined as presence ≥3 following 7 components: poor hygiene; dryness; low occlusal force; articulatory motor...

10.1111/ger.12580 article EN Gerodontology 2021-07-01

We are trying to create a platform for social innovation extend life span.Since 2005, health data (approximately 3000 items per person as of 2020) approximately 1000 adults have been collected each year during the Iwaki Health Promotion Project. The industry, government, academia, and citizens involvements in collection, aiming build that encourages societal subsequently extends expectancy Aomori. Project has supported financially by Japanese government since it was selected Center...

10.1177/20503121211002606 article EN cc-by-nc SAGE Open Medicine 2021-01-01

Oral hypofunction, resulting from a combined decrease in multiple oral functions, may affect systemic-condition deterioration; however, few studies have examined the association between hypofunction and general health among older adults. In this cross-sectional study, we relationship sarcopenia community-dwelling We included 878 adults (268 men 610 women, mean age 76.5 ± 8.3 years). Tongue coating index, moisture, occlusal force, diadochokinesis (/pa/,/ta/,/ka/), tongue pressure,...

10.3390/ijerph18126666 article EN International Journal of Environmental Research and Public Health 2021-06-21

Intestinal microflora has been associated with obesity. While visceral fat is more strongly cardiovascular disorder, a complication linked to obesity, than the body mass index (BMI), association between intestinal and obesity (as defined in terms of BMI) studied widely. However, link area (VFA) little studied. In this study, we investigate VFA BMI using longitudinal study on Japanese subjects different statuses (N = 767). Principal component analysis changes composition over one-year period...

10.3390/biology11020318 article EN cc-by Biology 2022-02-16

We have developed a Robot Assisted Activity (RAA) program for recreational use in health care facilities elderly people. The RAA has been evaluated such facility to assess its usefulness. applies standard classroom model, starting with homeroom and including lessons the Japanese language, music, gymnastics, arithmetic, other subjects. At end of program, there is graduation ceremony. video camera record each scene. Each behavior utterance participants then analyzed. In addition, immediately...

10.20965/jrm.2011.p0003 article EN Journal of Robotics and Mechatronics 2011-02-20

This study investigated the prevalence and factors associated with xerostomia hyposalivation among community-dwelling older people.Xerostomia are common symptoms in population.This included 894 community-dwelling, Japanese people (355 men, 539 women; age 65-84 years) who participated a comprehensive geriatric health examination, which questionnaires interviews regarding medical history, medications, Tokyo Metropolitan Institute of Gerontology Index Competence (TMIG-IC), depressive condition....

10.1111/ger.12101 article EN Gerodontology 2013-12-04

To confirm the usefulness of noninvasive measurements skin carotenoids to indicate vegetable intake and elucidate relationships between carotenoid levels biomarkers circulatory diseases metabolic syndrome, we conducted a cross-sectional study on resident-based health checkup (

10.3390/nu12061825 article EN Nutrients 2020-06-19

This study aimed to examine the prevalence of exercise as a coping strategy among Japanese community-dwelling older adults and its impact on their psychological well-being during COVID-19 pandemic. In October 2019 (baseline [BL]), 720 living in an urban area Japan participated comprehensive health survey. Of these, 618 responded mail survey (follow-up [FL]) June 2020, after first state emergency was lifted. Their assessed using WHO-5 Well-Being Index (WHO-5). Exercise stay-at-home period...

10.1016/j.psychsport.2021.102054 article EN cc-by-nc-nd Psychology of sport and exercise 2021-09-04

Introduction Social isolation has been recognized as a contributing factor to negative health outcomes. Although living alone is associated with health-related outcomes, existing findings are inconsistent. It not the act of that may predict poor health, but rather social can lead increased mortality risk. This study investigated combined associations and among community-dwelling older adults. Methods We included adults from Itabashi ward, Tokyo, who participated in comprehensive checkups....

10.3389/fpubh.2024.1365943 article EN cc-by Frontiers in Public Health 2024-03-15

To identify sarcopenia markers in urinary odor. We performed solid-phase microextraction from the headspace and gas chromatography-mass spectrometry analysis of volatile organic compounds (VOCs) 71 healthy individuals 68 patients diagnosed with according to Asian Working Group on Sarcopenia 2019 criteria. The mass-to-charge ratios (m/z) 10 VOCs a significant difference total ion chromatogram 220 detected this study were compared by U-test. calculate predictive values for sarcopenia, binomial...

10.1111/ggi.15072 article EN Geriatrics and gerontology international/Geriatrics & gerontology international 2025-01-19

This study aimed to examine a longitudinal relationship between depression status and functional decline among Japanese community-dwelling older adults, using 12-year population-based, prospective cohort design.A total of 710 men women, aged 65 years over, participated in the study. Katz's Index Tokyo Metropolitan Institute Gerontology Competence were used measure capacities basic activities daily living (BADL) higher-level competence, respectively. For purpose analysis, each subscale...

10.1002/gps.2245 article EN International Journal of Geriatric Psychiatry 2009-03-12

Frailty is an important predictor of the need for long-term care and hospitalization. Our aim was to categorize frailty in community-dwelling older adults.The present study carried out 2011-2013, consisted 1380 individuals over 65 years age. Participants completed Kihon checklist, which widely used assess Japan, their physical, cognitive social function evaluated. Non-hierarchical cluster analysis statistically frailty. The optimum number clusters determined as point at external reference...

10.1111/ggi.12676 article EN Geriatrics and gerontology international/Geriatrics & gerontology international 2016-01-21

Providing older person individuals with an appropriate intervention at the time of frailty onset is important to prevent progression condition and need for long-term care. However, proper timing starting nutritional dietary interventions frail subjects has not been fully elucidated. Therefore, in this cross-sectional study, we aimed clarify association between variety among persons Japan. We surveyed sex, age, body height, weight, mass index, serum albumin level, variety, intake indexes 747...

10.1007/s12603-018-1000-1 article EN cc-by-nc-nd The journal of nutrition health & aging 2018-01-30
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