文献一覧: Yu Nofuji (著者)

10 0 0 0 OA Combined Impacts of Physical Activity, Dietary Variety, and Social Interaction on Incident Functional Disability in Older Japanese Adults

著者: Satoshi Seino Yu Nofuji Yuri Yokoyama Takumi Abe Mariko Nishi Mari Yamashita Miki Narita Toshiki Hata Shoji Shinkai Akihiko Kitamura Yoshinori Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20210392, (Released:2021-12-18)
参考文献数: 47
被引用文献数: 10

Background: This 3.6-year prospective study examined combined impacts of physical activity, dietary variety, and social interaction on incident disability and estimated population-attributable fraction for disability reduction in older adults.Methods: Participants were 7,822 initially non-disabled residents (3,966 men and 3,856 women) aged 65–84 years of Ota City, Tokyo, Japan. Sufficiency of moderate-to-vigorous-intensity physical activity (MVPA) ≥150 min/week, dietary variety score (DVS) ≥3 (median), and social interaction (face-to-face and/or non-face-to-face) ≥1 time/week was assessed using self-administered questionnaires. Disability incidence was prospectively identified using the long-term care insurance system’s nationally unified database.Results: During a follow-up of 3.6 years, 1,046 (13.4%) individuals had disabilities. Independent multivariate-hazard ratios (HRs) and 95% confidence intervals (CIs) of MVPA, DVS, and social interaction sufficiency for incident disability were 0.68 (95% CI, 0.59–0.78), 0.87 (95% CI, 0.77–0.99), and 0.90 (95% CI, 0.79–1.03), respectively. Incident disability HRs gradually reduced with increased frequency of satisfying these behaviors (any one: HR 0.82; 95% CI, 0.65–1.03; any two: HR 0.65; 95% CI, 0.52–0.82; and all three behaviors: HR 0.54; 95% CI, 0.43–0.69), in an inverse dose-response manner (P < 0.001 for trend). Population-attributable fraction for disability reduction in satisfying any one, any two, and all three behaviors were 4.0% (95% CI, −0.2 to 7.9%), 9.6% (95% CI, 4.8–14.1%), and 16.0% (95% CI, 8.7–22.8%), respectively.Conclusion: Combining physical activity, dietary variety, and social interaction substantially enhances the impacts on preventing disability among older adults, with evidence of an inverse dose-response manner. Improving insufficient behavior elements through individual habits and preexisting social group activities may be effective in preventing disability in the community.

2022-05-18 02:03:42
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7 0 0 0 OA Dose-Response Associations of Physical Activity and Sitting Time with All-Cause Mortality in Older Japanese Adults

著者: Satoshi Seino Takumi Abe Yu Nofuji Toshiki Hata Shoji Shinkai Akihiko Kitamura Yoshinori Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20220246, (Released:2022-12-24)
参考文献数: 45
被引用文献数: 1

Purpose: Although examining the dose-response curves of physical activity (PA) and sitting time with health-related outcomes is an important research agenda, the results for older Japanese adults are extremely limited. We examined the dose-response associations of PA and sitting time with all-cause mortality among older Japanese.Methods: Initially, 8,069 non-disabled residents (4,073 men; 3,996 women) aged 65–84 years of Ota City, Japan, were recruited. Moderate-to-vigorous PA (MVPA) and sitting time were evaluated using the International Physical Activity Questionnaire-Short Form. Multivariate-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) of MVPA and sitting time for all-cause mortality were calculated, and the dose-response curves were examined using restricted cubic splines (RCS).Results: During 4.1 years of follow-up, 458 participants (5.7%; 331 men and 127 women) died. Compared with the low MVPA (<600 metabolic equivalents [METs]·minutes/week) group, HR for mortality gradually reduced in moderate (600–3000 METs·minutes/week) and high (>3000 METs·minutes/week) MVPA groups (moderate: HR 0.66; 95% CI, 0.54–0.82; high: HR 0.58; 95% CI, 0.45–0.75; P <0.001 for trend). RCS showed that the HR for mortality reduced linearly up to approximately 2000 METs·minutes/week of MVPA, and maximal risk reduction was seen at approximately 3000–4500 METs·minutes/week of MVPA. No significant dose-response association of sitting time with mortality was observed.Conclusions: Higher MVPA levels reduced all-cause mortality risk, in a significant inverse non-linear dose-response manner. Sitting time was not significantly associated with all-cause mortality. It is important to disseminate the significance of even a slight increase in the MVPA.

2023-01-05 12:22:08
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1 0 0 0 OA Combined Impacts of Physical Activity, Dietary Variety, and Social Interaction on Incident Functional Disability in Older Japanese Adults

著者: Satoshi Seino Yu Nofuji Yuri Yokoyama Takumi Abe Mariko Nishi Mari Yamashita Miki Narita Toshiki Hata Shoji Shinkai Akihiko Kitamura Yoshinori Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.33, no.7, pp.350-359, 2023-07-05 (Released:2023-07-05)
参考文献数: 47
被引用文献数: 10

2023-07-12 12:04:03
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1 0 0 0 OA The Kesennuma Study in Miyagi, Japan: Study Design and Baseline Profiles of Participants

著者: Mari Yamashita Satoshi Seino Yu Nofuji Yasuhiro Sugawara Yosuke Osuka Akihiko Kitamura Shoji Shinkai
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.12, pp.559-566, 2022-12-05 (Released:2022-12-05)
参考文献数: 41
被引用文献数: 5

Background: To clarify the association between psychosocial problems and frailty in the areas affected by the Great East Japan Earthquake, and to develop strategies for preventive long-term care in the community, we launched the Kesennuma Study in 2019. This report describes the study design and the participants’ profiles at baseline.Methods: The prospective study comprised 9,754 people (4,548 men and 5,206 women) randomly selected from community-dwelling independent adults aged 65 to 84 who were living in Kesennuma City, Miyagi. The baseline survey was conducted in October 2019. It included information on general health, socio-economic status, frailty, lifestyle, psychological factors (eg, personality, depressive moods), and social factors (eg, social isolation, social capital). A follow-up questionnaire survey is planned. Mortality, incident disability, and long-term care insurance certifications will also be collected.Results: A total of 8,150 questionnaires were returned (83.6% response rate), and 7,845 were included in the analysis (80.4%; mean age 73.6 [standard deviation, 5.5] years; 44.7% male). About 23.5% were considered frail. Regarding psychological and social functions, 42.7% had depressive moods, 29.1% were socially isolated, and only 37.0% participated in social activities at least once a month. However, 82.5% trusted their neighbors.Conclusion: While local ties were strong, low social activity and poor mental health were revealed as issues in the affected area. Focusing on the association between psychological and social factors and frailty, we aim to delay the need for long-term care for as long as possible, through exercise, nutrition, social participation, and improvement of mental health.

2022-12-30 13:00:03
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1 0 0 0 OA Impact of the First–Fourth Waves of the COVID-19 Pandemic on New Applications for Long-term Care Insurance in a Metropolitan Area of Japan

著者: Satoshi Seino Shoji Shinkai Akihiko Kitamura Yu Nofuji Yuri Yokoyama Toshiki Hata Yoshinori Fujiwara
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.32, no.11, pp.524-526, 2022-11-05 (Released:2022-11-05)
参考文献数: 8
被引用文献数: 1 3

2022-12-29 21:00:04
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1 0 0 0 OA A Community-Wide Intervention Trial for Preventing and Reducing Frailty Among Older Adults Living in Metropolitan Areas: Design and Baseline Survey for a Study Integrating Participatory Action Research With a Cluster Trial

著者: Satoshi Seino Akihiko Kitamura Yui Tomine Izumi Tanaka Mariko Nishi Kumiko Nonaka Yu Nofuji Miki Narita Yu Taniguchi Yuri Yokoyama Hidenori Amano Tomoko Ikeuchi Yoshinori Fujiwara Shoji Shinkai
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20170109, (Released:2018-06-30)
参考文献数: 47
被引用文献数: 30

Background: Preventing and reducing frailty is an important challenge for Japan in the next decade, especially in metropolitan areas. We launched a community-wide intervention trial (the Ota Genki Senior Project) in 2016 to develop effective community-based strategies for frailty prevention in metropolitan areas. This report describes the study design and baseline survey.Methods: This study is a community-wide intervention trial that integrates participatory action research into a cluster non-randomized controlled trial for adults aged 65 years or older living in Ota City, Tokyo. We allocated 3 of 18 districts to an intervention group and the other 15 to a control group. Using a mailed self-administered questionnaire, we conducted a baseline survey of 15,500 residents (8,000 and 7,500 in the intervention and control groups, respectively) from July through August 2016. In addition to socioeconomic status and lifestyle variables, we assessed frailty status (primary outcome) and physical, nutritional, and psychosocial variables (secondary outcomes). Based on the baseline findings, an intervention to improve outcomes will be implemented as participatory action research. Follow-up surveys will be conducted in the same manner as the baseline survey.Results: A total of 11,925 questionnaires were returned (76.9% response rate; 6,105 [76.3%] and 5,820 [77.6%] in the intervention and control groups, respectively), and 11,701 were included in the analysis (mean age, 74.3 [standard deviation, 5.5] years; 48.5% were men).Conclusions: This study is expected to contribute to development of a prototype of a community-wide frailty prevention strategy, especially in metropolitan areas in Japan. Trial registration: UMIN Clinical Trials Registry (UMIN000026515).

2018-07-11 23:04:11
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1 0 0 0 OA The Yabu Cohort Study: Design and Profile of Participants at Baseline

著者: Hiroshi Murayama Yu Nofuji Eri Matsuo Mariko Nishi Yu Taniguchi Yoshinori Fujiwara Shoji Shinkai
出版者: 日本疫学会
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20140065, (Released:2014-09-06)
参考文献数: 28
被引用文献数: 2 7

Background: Further evidence into the effects of social relationships on health (including those at both the individual and community levels) is needed in Japan. The Yabu Cohort Study was launched in 2012 to identify the associations between social relationships and health among community-dwelling older Japanese people and to evaluate population approaches for preventive long-term care in the community. This report describes the study design and the profile of the participants at baseline.Methods: The Yabu Cohort Study is a prospective study of community-dwelling individuals aged 65 years and older in Yabu, Hyogo Prefecture, Japan. The baseline survey, using a mailed self-administered questionnaire, was conducted from July through August 2012. It included information on socioeconomic status, general and psychological health, and social relationships (social network, social support, and social capital). Survival time, long-term care insurance certification, and medical and long-term care costs after the baseline survey will be followed.Results: Of 7271 questionnaires distributed, a total of 6652 were returned (91.5% response rate), and 6241 were included in the analysis. Mean age was 71.9 ± 5.2 years, 43.2% were men, and 83.8% had lived in their neighborhood for more than 40 years. Approximately 45.2% expressed general trust. About 82.4%, 49.9%, and 55.5% have participated in neighborhood association activities, municipal seminars for preventive long-term care, and salon activities in the community, respectively.Conclusions: The study is expected to provide valuable evidence on the effects of social relationships on health and to suggest the usefulness of population approaches for preventive long-term care in Japanese communities.

2014-09-17 16:37:02
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