研究者詳細 - 伊香賀　俊治

論文 - 伊香賀　俊治

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Are cold extremities an issue in women’s health? Eepidemiological evaluation of cold extremities among Japanese women

Tsuboi S., Mine T., Tomioka Y., Sshiraishi S., Fukushima F., Ikaga T.

International Journal of Women's Health （International Journal of Women's Health） 11 31 - 39 2019年

研究論文（学術雑誌）, 共著, ISSN 1179-1411

© 2019 Tsuboi et al. Background: Unlike traditional East Asian medicine, the necessity of health care services for cold extremities is yet to be acknowledged in Western medicine. In this study, we aimed to conduct an epidemiological evaluation of this unremarkable symptom among women in Japan. Materials and methods: A cross-sectional study was conducted from February 2016 to April 2017, and data of 238 women throughout Japan were analyzed. Questionnaires were used to examine participants’ demographics, health-related behaviors, health status, and frequency of subjective symptoms over the past 1 year. The association between cold extremities and other subjective symptoms was examined by the multiple logistic regression analysis. Results: The prevalences of mild and severe cold extremities were 49.6% and 35.3%, respectively. Temperature and utilization of health care services were not significantly different by the severity of cold extremities. The accompanying symptoms that were significantly associated with the cold extremities were shoulder stiffness, fatigue, low back pain, headache, nasal congestion, itching, injury, and difficulty hearing. After multiple logistic regression analysis, low back pain (OR: 4.91) and difficulty hearing (OR: 4.84) kept the significance. Factors related to cold extremities including mental quality of life, sleep quality, and habitual drinking were significantly associated with other accompanying symptoms. Conclusion: Women with cold extremities have various accompanying symptoms and health-risk behaviors. Symptomatic treatment for cold extremities may not be sufficient, and comprehensive care would be required.

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Incidence and characteristics of bath-related accidents

Suzuki M., Shimbo T., Ikaga T., Hori S.

Internal Medicine （Internal Medicine） 58 （ 1 ） 53 - 62 2019年

研究論文（学術雑誌）, 共著, ISSN 09182918

© 2019 The Japanese Society of Internal Medicine. Objective Bath-related sudden cardiac arrests frequently occur in Japan. This study aimed to describe the actual incidence and characteristics of bath-related accidents, including non-fatal events, and to establish the etiology of bath-related sudden cardiac arrest. Methods This prospective cross-sectional observational study was conducted in Tokyo Metropolis and Saga and Yamagata Prefectures between October 2012 and March 2013. Emergency personnel enrolled events in this study when they recognized that activation of the emergency medical system was related to bathing. Surveillance cards were delivered and collected from the emergency personnel and attending physicians. Results In total, 4,593 events were enrolled (1,528 cardiac arrests, 935 survivors in need of help, 1,553 patients with acute illnesses, and 577 patients with injuries) in this study. In the group of survivors in need of help and with acute illness, consciousness disturbance and lethargy without any organic disease were recognized as the main symptoms. Acute coronary syndrome and stroke were infrequently diagnosed. Of the survivors, 30% had a body temperature above 38°C. Their consciousness level significantly correlated with their body temperature. Emergency personnel reported that 79% of sudden cardiac arrests were from victims whose faces were submerged in the tub water, while 18% of survivors had their faces submerged in the tub water. Conclusion This study revealed that accidents, including non-lethal events, frequently occur. The key symptoms were consciousness disturbance and lethargy characterized as a functional disorder and accompanied by an elevated body temperature. Those findings suggest that heat illness during hot water immersion causes drowning.

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Multivariate analysis of perceived indoor temperature and age at need for long-term care insurance: A field survey on the effect of winter indoor thermal environment on care requirements: Part 2

Nakajima Y., Ikaga T., Ono M., Hoshi T., Ando S.

Journal of Environmental Engineering (Japan) （Journal of Environmental Engineering (Japan)） 84 （ 763 ） 795 - 803 2019年

研究論文（学術雑誌）, 共著, ISSN 13480685

© 2019 Architectural Institute of Japan. All rights reserved. This retrospective study involved 205 community-dwelling older adults living in Japan. Participants completed a self-report questionnaire about personal characteristics, housing, and perceived indoor temperature in their home during winter. Participants were divided into a Cold group and a Warm group based on perceived indoor temperature. Multivariate analysis by ANCOVA revealed a significant main effect of perceived indoor temperature, with the Cold group having a younger age at certification of long-term care need (F(1, 197)=9.27, p<0.01). Estimated marginal means indicated that healthy life expectancy was 2.9 years shorter in the Cold group than in the Warm group.

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Annual nationwide environmental impact assessment of Japanese municipalities within the framework of endpoint-type lcia method "lime2

Yamasaki J., Ikaga T., Itsubo N.

Journal of Environmental Engineering (Japan) （Journal of Environmental Engineering (Japan)） 84 （ 764 ） 955 - 965 2019年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 13480685

© 2019 Architectural Institute of Japan. All rights reserved. This study attempted to comprehensively measure annual environ mental loads emitted in Japanese administrative divisions (municipalities) in the year 2015 using the LCIA method IJME2. Using statistical information that was reliable, verifiable, and comparable, the environmental damage amount for the whole of Japan was calculated to be 8.53 trillion yen. The top three amounts for each impact category were "Global warming". "Land use", and "Waste (domestic)". The damage amounts per capita were placed on a map of Japan to visualize tendencies related to population distribution and industrial activity.

Quantitative improvement in workplace performance through biophilic design: A pilot experiment case study

Ayuso Sanchez J., Ikaga T., Vega Sanchez S.

Energy and Buildings （Energy and Buildings） 177 316 - 328 2018年10月

研究論文（学術雑誌）, 共著, ISSN 03787788

© 2018 Elsevier B.V. Numerous studies endorsed by the scientific community affirm that biophilic design in the workplace improves productivity and user well-being. However, it is necessary to go a step further and objectify the design criteria serving as an operator for productivity and well-being in design practice. In response to the challenges of how to measure the improvement of productivity and well-being through biophilic architecture design, the main contribution of this article is the development of a tool that allows to measure the predicted feature that improve productivity and well-being, based on a scientific method, which is tested by conducting a pilot experiment. A scheduled pilot experiment, as a small-scale version done in preparation for a major study, has been conducted to test a tool that quantifies the impact of biophilic design features on performance and well-being, to evaluate the influence of variables such as greenery and daylight on improving workplace performance, and look at biophilic design knowledge in greater depth. The role of natural indoor environments - understood as spaces within buildings provided with elements of nature - has received relatively little attention, compared to the number of studies evaluating occupant impact related to other characteristics of indoor environments derived from mechanical and electrical systems such as thermal factors, noise and vibration, ergonomics and office design. The present study is one of the first studies evaluating and measuring the combination of greenery and daylight into a biophilic design proposal. The results highlight an improvement in well-being, performance, creativity and health by introducing daylight and greenery into workplace design such as biophilic design features. The tool developed and tested in this pilot experiment opens a way to improve measured workplace performance to a much greater extent in contrast to the existing practice.

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Sustainability assessment of cities: SDGs and GHG emissions

Kawakubo S., Murakami S., Ikaga T., Asami Y.

Building Research and Information （Building Research and Information） 46 （ 5 ） 528 - 539 2018年07月

研究論文（学術雑誌）, 共著, ISSN 09613218

© 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. The United Nations’ (UN) sustainable development goals (SDGs), the core of the 2030 Agenda for Sustainable Development and the UN Paris Agreement, were adopted in 2015. Involvement of not only national governments but also all other stakeholders including local governments is important to promote sustainable development and to achieve the goals. The question arises, therefore, of what methods should be used to best implement and assess sustainability issues at a local level. In this light, a new version of Comprehensive Assessment System for Built Environment Efficiency (CASBEE), CASBEE for Cities, is introduced for assessing the sustainability of cities and communities around the world based on SDG indicators and greenhouse gas (GHG) emissions. The tool allows users to understand the sustainability of cities and communities based on quality (Q) and environmental load (L) perspectives. The sustainability assessments show that cities in developed countries tend to have good grades for Q, but bad grades for L, while cities in developing countries tend to have the opposite trend. This will assist cities and communities in both developed and developing countries to understand urgent problems and to identify effective solutions for sustainable development.

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Evaluation of relationship between residence resiliency and residents' awareness of disaster prevention

Sato R., Ikaga T., Murakami S., Seike T., Otsuka K.

Journal of Environmental Engineering (Japan) （Journal of Environmental Engineering (Japan)） 83 （ 749 ） 615 - 623 2018年07月

研究論文（学術雑誌）, 共著, ISSN 13480685

© 2018 Architectural Institute of Japan. All rights reserved. The severe damage caused by the Great East Japan Earthquake in 2011 highlighted the shortcomings in disaster reduction. Therefore, the concept of resilience has drawn much attention to reduce damage and to achieve restoration of services in addition to preventing damage; thus, new policy guidelines in various fields have been published. To improve residence resiliency, it is important not only to prepare for physical needs, but to understand the risks during disasters, to take appropriate action, and to make homes safe to avoid injuries and accidents in everyday life. However, the actual extent to which residents have made these preparations is not properly understood. Factors affecting residence resiliency is unclear, and it is necessary to clarify this and to consider measures to promote resident preparation. In this research, we conducted a questionnaire survey on residents' disaster preparation and awareness to evaluate residence resiliency and analyze the factors affecting residence resiliency. The questionnaire survey results show that the higher the household income and the higher the age of the resident, the higher the residence resiliency. Residents living in areas affected by the Great East Japan Earthquake showed a relatively high resilience. In addition, factor analysis was conducted, and we extracted elements describing residence resiliency. Eight factors were extracted from questionnaires on resilience, and the factors were classified as "Risk understand 1", "Risk understand 2", "Life continuity", "Action plan", "Links with region", "Equipment preparation", "Daily safety", and "Information". Evaluating the resilience for each factor indicated that the "Links with region" and "Equipment preparation" factors are inadequate, and that information is provided according to these factors. We analyzed the relationship between residents' awareness and residence resiliency by structural equation modeling. The results showed that concerns about primary damage and mutual help awareness affect disaster prevention awareness, and that disaster prevention awareness affects residence resiliency. Therefore, to improve residence resiliency, activities to improve mutual help awareness should be promoted and residents should be encouraged to recognize the risk of disaster and the possibility of damage. However, in the model we created, disaster prevention awareness only accounts for 26% of residence resiliency, and the effect of household income and age is large. Therefore, measures for promoting preparation among those with low income and among young people are important.

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Influence of residential performance on residents’ health status: Nationwide survey of environmental performance of detached houses and residents’ health status

Shun Kawakubo, Toshiharu Ikaga, Shuzo Murakami, Tanji Hoshi, Shintaro Ando

International Journal of Japan Architectural Review for Engineering and Design (JAR) （Wiley） 1 （ 2 ） 271 - 279 2018年01月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 2475-8876

Previous studies have revealed the relationships between specific residential environmental factors and residents' health status. However, no study has considered the comprehensive health risk due to the overall residential environment. Therefore, a large-scale nationwide questionnaire survey was conducted using the CASBEE Health Checklist to examine the residential environment of detached houses and residents' health status. This analysis indicated that the overall residential environment is likely an important determinant of health and was associated with disease prevalence among residents.

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執務環境と住環境が心身の健康と知的生産性に及ぼす影響　（第1報）アンケート調査に基づく統計分析

四方路慶樹, 伊香賀俊治, 藤野善久, 平岡雅哉, 佐藤正章, 鈴木雄介, 権藤尚, 海塩渉, 関紅美花

空気調和・衛生工学会大会　学術講演論文集（公益社団法人空気調和・衛生工学会） 2018 （ 0 ） 185 - 188 2018年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1880-3806

<p>執務者が長い時間を過ごす執務環境が心身の健康に影響を及ぼす可能性が既往研究により報告されているが、執務者の生活に大きく関わっている住環境や、メンテナンス・企業経営等の管理方法を考慮した包括的な検証は不十分である。そこで、執務環境と住環境が心身の健康と知的生産性に与える影響の包括的な検証を目的とした実態調査を実施した。結果として、良質な執務環境と住環境が心身の健康改善と知的生産性向上に寄与する可能性が示された。</p>

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AN EXAMPLE OF CLUSTER ENERGY MANAGEMENT SYSTEM IN AGING SOCIETY

Terashima Kohei, Akada Hiroyasu, Kobayashi Yuriko, Sato Haruki, Ikaga Toshiharu

グランド再生可能エネルギー国際会議論文集（特定非営利活動法人再生可能エネルギー協議会） 1 （ 0 ） 2018年

研究論文（学術雑誌）, 共著, 査読有り

Under the Paris Agreement, Japan promises reducing 26 % from greenhouse gas emissions in 2013 by 2030. We have proposed a concept of Cluster Energy Management System, CEMS, which can design a highly saving-energy network based on demand simulation of communities consisting various different residents. As an example of CEMS designing a good thermal and electricity demand-balance among a network of residential houses, commercial and nursing facilities is introduced. The network can use almost whole exhaust heat from distributed power plant such as fuel cell with solar power and thermal utilization. We can simulated saving about 40 % in prime-energy consumption and about 45 % reduction of CO2 emission by designing an example case of the CEMS, which combines fuel cells and electric vehicles in a community, where 200 families including elderly people are living. We concluded that it would be possible to reduce primary energy consumption and CO2 emission by nearly a half amount or more by introducing the CEMS.

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Relationship between indoor temperature in winter and Brain Healthcare Quotient

Matsumoto M., Ikaga T., Yamakawa Y., Uchida Y., Murakami S., Ando S., Mitsukura Y., Hayashi Y.

15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 （15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018） 2018年

研究論文（学術雑誌）, 査読有り, ISSN 9781713826514

In Japan, where the population is aging, it is necessary to maintain mental and physical health over the long term in order to solve social problems such as increasing medical expenses. It has been suggested that exposure to cold adversely affects brain health. Thus, we hypothesized that the brain health of residents in cold houses would be worse than that of residents in warm houses. In the winter season from 2016 to 2017, we measured indoor temperature, conducted brain health tests using MRI examination, and administered questionnaire surveys for 59 residents of a town in northern Japan. The results of multiple regression analysis show that residents who had a cold living room had lower indexes representing the quality of cranial nerve fibers than residents who had a warm living room in winter.

AN EXAMPLE OF CLUSTER ENERGY MANAGEMENT SYSTEM IN AGING SOCIETY

Terashima Kohei, Akada Hiroyasu, Kobayashi Yuriko, Sato Haruki, Ikaga Toshiharu

グランド再生可能エネルギー国際会議論文集（特定非営利活動法人再生可能エネルギー協議会） 1 2018年

研究論文（学術雑誌）, 共著, 査読有り

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Influence of environmental humidity on oral dryness among nursing home residents in Japan

Nakajima Y., Ikaga T., Ando S., Hoshi T.

研究論文（学術雑誌）, 共著, 査読有り

Maintaining good quality of life among elderly residents of nursing homes is becoming more important as their numbers increase with the ageing of society. Dry mouth, or xerostomia, is one condition that must be prevented, as it can lead to various serious diseases. However, older people are susceptible to dry mouth due to reduced lip closing force. In this study, a field survey of the indoor environment of nursing homes and oral dryness among nursing home residents was conducted in winter 2015. Twenty-seven facilities were classified as dry or moist based on measured indoor humidity. Ordered logistic regression analysis showed that the likelihood of dry mouth was significantly lower among patients residing in the moist group compared with the dry group.

Relationship between Bath-related Deaths and Low Air Temperature.

Masaru Suzuki, Toshiharu Ikaga, Shingo Hori

Internal medicine (Tokyo, Japan) （JAPAN SOC INTERNAL MEDICINE） 56 （ 23 ） 3173 - 3177 2017年12月

研究論文（学術雑誌）, 共著, 査読有り, ISSN 0918-2918

Objective Bath-related sudden cardiac arrests occur frequently in Japan. Although previous studies have reported that most fatal events occurr in winter, the reason why such events exhibit a seasonal variation has not been elucidated. In this study, we hypothesized that the occurrence of bath-related deaths was correlated with a low air temperature. Methods This prospective cross-sectional observational study was conducted in the Tokyo Metropolitan area between October 2012 and March 2013. Data were collected for all cases involving the activation of the emergency medical system because of an accident or acute illness related to bathing that occurred in Tokyo during the study period. In particular, elderly (≥65 years) cardiac arrest victims who had been found in a bathtub filled with water were enrolled. The relationship between the daily number of cardiac arrest events and the lowest daily air temperature in Tokyo was studied using a nonlinear regression model. Results A total of 3,624 bath-related events were registered in this study. Among these events, 1,081 deaths of elderly individuals who had been found in a bathtub filled with water were recorded. A close correlation was observed between the daily number of events and the lowest daily air temperature. This correlation was described by the following equation: y=8.38e-0.07x, where y was the daily number of cardiac arrests and x was the lowest daily air temperature. Conclusion A low air temperature was closely correlated with the occurrence of bath-related cardiac arrest.

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業務用建築のLCA

佐藤正章, 伊香賀俊治

日本LCA学会誌（日本LCA学会） 13 （ 2 ） 111 - 117 2017年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 18802761

建築LCAの国・自治体・民間での活用状況と健康影響評価への発展

伊香賀俊治

日本LCA学会誌（日本LCA学会） 13 （ 2 ） 104 - 110 2017年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 18802761

<p>本稿は建築LCAの最新状況を紹介したものである。建築LCAの研究開発は日本建築学会において1990年にスタートし、建物のLCA指針となった。その手法を応用した国、自治体の公共建築の設計に活用される気候変動緩和対策評価ツールが開発・運用され、民間企業でも幅広く利用されている。また、2007年からは戸建住宅からあらゆる用途の大規模建築までを対象とする簡易LCA手法が建築環境総合性能評価システム（CASBEE）に組み込まれ、幅広く活用されている。さらに建築LCAにおいて室内空気質汚染を始めとする室内環境による健康影響評価が行われている。</p>

全国二次医療圏を対象とした傷病別入院患者割合と都市・住環境因子の比較

鈴木健太郎, 伊香賀俊治, 村上周三, 川久保俊

環境工学I （日本建築学会）（ 2016 ） 1195 - 1196 2016年08月

研究論文（学術雑誌）, 共著, 査読有り

A study on economic impact of environmental efficiency and intellectual productivity contribution on rents

Ito, M. and Murakami, S. and Ikaga, T. and Hayashi, T. and Takal, H. and Matsunaga, K.

AIJ Journal of Technology and Design （AIJ Journal of Technology and Design） 22 （ 52 ） 1053 - 1056 2016年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 18818188 13419463

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Event history analysis of indoor thermal environment and care prevention of residents: A field survey on the effect of winter indoor thermal environment on care requirements

Hayashi, Y. and Ikaga, T. and Hoshi, T. and Ando, S.

Journal of Environmental Engineering (Japan) （Journal of Environmental Engineering (Japan)） 81 （ 729 ） 901 - 908 2016年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1881817X 13480685

The aim of this paper is to clarify the relationship between the indoor thermal environment and care prevention. A field study comprising actual measurements, questionnaire surveys, and data collection from face sheets was conducted in 2014. Participants were classified into two groups based on frequency of feeling cold in their rooms. Age at certification of needing long-term care was compared between the groups by using survival analysis. The result was significant when the classification condition was frequency of feeling cold in their dressing rooms. The age at which half of the group acquired their certification was 76 years in the high-frequency group and 80 years in the low-frequency group.

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Comparison of home blood pressure before-and-after moving to high thermal insulation performance houses: A field survey on the effect of indoor thermal environment on blood pressure in winter (Part III)

Umishio, W. and Ikaga, T. and Ando, S. and Otsuka, K.

Journal of Environmental Engineering (Japan) （Journal of Environmental Engineering (Japan)） 81 （ 722 ） 357 - 366 2016年

研究論文（学術雑誌）, 共著, 査読有り, ISSN 1881817X 13480685

This study aimed to demonstrate antihypertensive effects by moving to high thermal insulation performance houses. Field surveys on home blood pressure and indoor temperature were conducted before and after moving in winter 2014 and 2015. Systolic blood pressure (SBP) decreased by 1.5 mmHg per 1 °C increase in indoor air temperature and standard deviation (SD) of SBP improved by 2.3 mmHg per 1 °C improvement in SD of indoor air temperature in a group over 125 mmHg. However, to raise indoor temperature, it is not satisfied only by moving to high thermal insulation performance houses but adequately heating a room.

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