Brain Sleep Inc. (Headquarters: Chiyoda-ku, Tokyo; CEO: Atsushi Hirota; hereinafter referred to as "Brain Sleep") and Haseko Corporation (Headquarters: Minato-ku, Tokyo; President and CEO: Kazuo Ikegami; hereinafter referred to as "Haseko") are working with the NTT East Group to improve sleep quality in their "Houses for Good Sleep." They have now completed a "Verification of the Impact of Differences in Sleep Environment on Sleep" (hereinafter referred to as "This Verification") and confirmed improved sleep quality in the "Houses for Good Sleep." A home for good sleep This experimental residential unit was installed in the rental apartment "Sustainer Branche Hongyoutoku" owned and operated by Haseko. This experimental residential unit was supervised by Brain Sleep and incorporates four points that are optimal for sleep. ① Optimization of circadian rhythms using Sleep Tech*1: Realization of a sleep environment linked to biological data measured during sleep using the Brain Sleep Coin ② Creation of a comfortable temperature, humidity, and air environment: Adjustment of temperature and humidity through the building structure and interior materials such as insulation, and air conditioning management through a whole-building air-conditioning system ③ Relaxation effects through colors and sounds: Adoption of wall colors that promote good sleep, installation of soundproof doors that keep noise levels below 40 dB ④ Relaxation effects through wood: Relaxation effects from touching wooden wallpaper and feeling the scent of wood*1: Equipment, systems, and services that utilize IoT device technology and AI technology to monitor and analyze sleep conditions and scientifically improve or enhance the quality of sleep Validation Overview In this test, the impact of the "Home for Good Sleep" on sleep was verified using the following methods. Verification period: January to March 2024 Participants: 8 men in their 20s to 40s, including Haseko employees (6 of whom had issues with sleep*2) Measurement items: Measurements using electroencephalographs, activity meters, and electrocardiographs as objective indicators. A questionnaire evaluation using the OSA Sleep Questionnaire (MA version)*3 as a subjective indicator. Verification method: A crossover test in which participants lived for one week in a "home for good sleep" (hereafter "good sleep dwelling") and a "general home where sleep is not supervised" (hereafter "general dwelling"), and compared weekday sleep. *2: Those who answered in a questionnaire conducted in advance that their usual sleep problems were less than 8 out of 10 points. *3: A sleep evaluation method that statistically scales the feeling of sleep on that day. Test Results The results suggested that subjects who felt they had issues with sleep tended to experience better quality sleep in the "house for good sleep," where the best sleeping environment had been created, as this "golden 90 minutes of sleep" - the most important part of a night's sleep, lasting approximately 90 minutes immediately after falling asleep - was deeper. ①The proportion of non-REM sleep stage 3 (S3) in the first sleep cycle (the golden 90 minutes) is high*4 ② High delta power value per minute during the first sleep cycle (golden 90 minutes)※5 *4: A deep sleep stage. The deepest sleep during the night is S3 in the first sleep cycle. *5: A brain wave with characteristics that appear during deep sleep, which is related to the "depth of sleep." In this trial, objective indicators were used to create a "Home for Good Sleep," which created the best sleeping environment, and it was found that the quality of sleep tended to be higher. It is believed that the four optimal points for sleep adopted in the "Home for Good Sleep" had a positive effect. From the perspective of improving the quality of sleep of residents, the results of this trial could be used in various ways. Comment from Seiji Nishino, Chief Research Advisor of Brain Sleep Good sleep is the most important physiological phenomenon that is indispensable for improving health and productivity. It is known that sleep is affected by external environmental factors such as room temperature, lighting, and noise, personal internal factors such as anxiety and tension, and physical factors such as pain. In other words, almost all factors affect sleep, so many people have trouble sleeping, and the symptoms vary widely. Providing the best housing for a good night's sleep is an important mission for construction companies, but they were groping in the dark about how to approach it. This time, sleep specialists and construction companies collaborated to exchange opinions from their respective positions on the best living environment for a good night's sleep, conducted objective experimental verification in a residential experimental dwelling, and confirmed that it had a positive effect on the most important variables of sleep, which is considered to be groundbreaking. In the future, we hope that by conducting more detailed analysis to investigate what elements of the living environment have a positive effect on sleep and by what mechanism, general residents will be able to enjoy housing that brings them the "best sleep." Seiji Nishino Professor of Psychiatry at Stanford University School of Medicine, Director of the Sleep Biorhythm Research Institute at Stanford University Founder and Chief Research Advisor of Brain Sleep Co., Ltd. Certified Medical Doctor, Designated Mental Health Physician, Specialist in the Japanese Society of Sleep Research, Industrial Physician Sustainbranché Hongyoutoku This is a rental apartment project that will see the full renovation of existing corporate housing, the first of its kind in Japan*6, to achieve virtually zero CO2 emissions during building operation, with the goals of increasing the value of existing apartments and further promoting research and technological development to create new value in housing. HP: https://www.haseko.co.jp/sustainabranche/ *6 As of June 13, 2022. Research conducted by ESP Research Institute, Inc. (Survey period: May 23 to June 6, 2022. Survey method: Public information search using the keywords "apartment complex or condominium," "renewable energy," and "renovation or remodeling" and multifaceted market research) Joint verification partners Haseko Corporation With the corporate philosophy of "creating optimal living environments for cities and people and contributing to society," as a general construction company focusing on condominiums, we provide total production from collecting site information, planning, negotiating with neighbors, obtaining permits and licenses, to design and construction. We also respond to the diverse needs of condominium residents and provide safe, secure, and comfortable housing and urban environments. Official site: https://www.haseko.co.jp/hc/ Nippon Telegraph and Telephone East Corporation NTT DX Partners, Inc. (Sleep Tech Business Overview) We provide business support services for companies and local governments focusing on "sleep," including collecting and verifying sleep data for corporate activities and promoting people's health, utilizing it in product development, and even diagnosing and improving sleep quality. Sleep Tech Business: https://business.ntt-east.co.jp/content/sleeptech/ Overview video: https://www.youtube.com/watch?v=GXmerheNP98
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