Brain Sleep Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Kosuke Michibata; hereinafter "Brain Sleep") conducted a study (hereinafter "this initiative") on the effects on sleep of the "Colantotte RESNO" switching shirt, a brand developed by Colantotte Co., Ltd. (Headquarters: Chuo-ku, Osaka; President: Katsumi Komatsu), the manufacturer and distributor of the magnetic health gear "Colantotte," which has the concept of "caring for daily fatigue to create a better tomorrow." The study found potential for improvement in sleep latency*1, sleep offset latency*2, and sleep efficiency*3. *1 Sleep latency: The time it takes to fall asleep from the moment of lying down. *2 Sleep offset latency: The time from final awakening to getting out of bed. *3 Sleep efficiency: The ratio of total sleep time (excluding wakefulness after sleep onset) to time in bed. Background of the Brain Sleep x Colantotte Collaboration Brain Sleep is committed to developing products based on sleep medicine, disseminating accurate sleep information, and supporting the acquisition of proper sleep evidence, all in an effort to address Japan's sleep issues, as Japan has the shortest sleep duration among OECD member countries. This time, we investigated the effects on sleep of "switching wear," a relaxation wear designed to promote blood circulation and support relaxation, from Colantotte, a company specializing in health-related businesses centered on magnetic health gear. According to Brain Sleep's sleep deviation score survey of 10,000 people nationwide, over 70% of respondents reported neck, shoulder, and lower back pain, and a clear correlation was found between the frequency of pain and sleep deviation scores. Relieving stiffness, a common concern in modern society, is expected to lead to improved sleep, and this study was conducted to visualize that effect. "Colantotte RESNO" Switching Wear Colantotte Co., Ltd. focuses on developing authentic products with evidence, primarily centered on "Colantotte" magnetic health gear, which is certified as a medical device. Furthermore, as a new brand of Colantotte, "Colantotte RESNO" was launched in April 2019 with the concept of "caring for today's fatigue to create a better tomorrow," and has been expanding its "switching wear" line, which promotes blood circulation and supports relaxation. According to Colantotte, switching wear, which is certified as a medical device, has the following two features: ① Contains magnets: 180mT (1800G) permanent magnets are arranged in Colantotte's unique alternating N-S pole pattern, which acts on a surface rather than a point, leading to greater expected effects. Magnets are placed in areas where they can most effectively impact blood flow, promoting circulation and alleviating muscle stiffness simply by wearing the garment, due to the widespread magnetic influence. (Excerpt from Colantotte's website) ② Features a special uneven texture on the back of the fabric: The uneven Switch-TexTM fabric gently touches the skin, similar to the sensation of "effleurage*4." As the body moves, it rubs against the skin, leading to a comfortable and relaxing time. (Excerpt from Colantotte's website) *4 Effleurage: Also known as "superficial massage," a technique involving applying pressure and tactile stimulation to the skin at a slow pace of about 5 cm per second. Study Details In this study, we investigated the effect of the aforementioned switching wear, which incorporates magnets and a special uneven texture, on sleep quality through improved blood flow. 17 men and women aged 30-50 slept in three different types of shirts, including switching wear, and their sleep states were measured. The three types of shirts were as follows: ① Cotton-poly shirt: A commercially available shirt made of cotton and polyester (no magnets, no uneven texture). ② Magnetic shirt: A shirt made of cotton and polyester, containing magnets, but without the uneven texture (with magnets, no uneven texture). ③ Switching wear: The target product (with magnets, with uneven texture). Sleep state was evaluated using an actigraph as an objective indicator and a questionnaire utilizing the VAS (Visual Analogue Scale) method as a subjective indicator. Study Results Result ①: Objective data from actigraph Both the magnetic shirt and switching wear, which contain magnets, showed a tendency for reduced sleep latency and sleep offset latency, resulting in an improved tendency in sleep efficiency. Furthermore, only switching wear showed statistically significant improvement in all indicators. Result ②: Subjective data from questionnaire using VAS method From the questions posed to subjects upon waking, statistically significant differences were confirmed for switching wear compared to the cotton-poly shirt regarding "wakefulness," "reduction in fatigue," and "relief of shoulder stiffness." The improvement in "sleep offset latency" observed in the objective evaluation was similarly confirmed in the subjective evaluation. However, no statistically significant difference was found for questions "regarding falling asleep," which are related to the improvement in "sleep latency." Discussion of Results The results of the above study showed that both types of shirts containing magnets (magnetic shirt and switching wear) tended to improve sleep indicators such as sleep latency, sleep offset latency, and sleep efficiency compared to general cotton-polyester shirts. For "switching wear," a statistically significant difference was observed compared to the cotton-poly shirt. A notable point of this study is that only "switching wear" showed a significant improvement in sleep latency, sleep offset latency, and sleep efficiency when compared to the "cotton-poly shirt," suggesting that "switching wear" had a greater effect than the "magnetic shirt." Switching wear, in addition to magnets, incorporates a special uneven texture that is expected to have the effect of effleurage, and it is believed that this effect contributed to the improvement in sleep indicators. Study Outline Subjects: 17 males and females aged 30-50 Study method: Crossover studyMeasurement items: VAS (Visual Analogue Scale) evaluation, actigraph Test products: - Cotton-poly shirt: A commercially available shirt made of cotton and polyester (no magnets, no uneven texture) - Magnetic shirt: A shirt made of the same material as switching wear, containing magnets, but without the uneven texture (with magnets, no uneven texture) - Switching wear: The target product (with magnets, with uneven texture) [Comment from Brain Sleep Co., Ltd. (Chief Research Advisor / Dr. Seiji Nishino)] Sleep is easily affected by external factors such as room temperature and humidity, internal factors such as worries and tension, and physical factors such as bodily pain. It is known that bedding and pajamas also significantly impact sleep as external factors. While it can be inferred that wearing materials with magnets might affect sleep due to magnets influencing skin blood flow, such effects have rarely been investigated. The results of this study, showing improved sleep onset, wakefulness, and sleep quality by wearing magnetic materials or, furthermore, materials that provide tactile stimulation in addition to magnets, are noteworthy, and further development and application in the field of sleep science are anticipated. <Seiji Nishino> Professor of Psychiatry, Stanford University School of Medicine, Director of the Stanford University Sleep & Circadian Neurobiology Laboratory. Founder and Chief Research Advisor of Brain Sleep Co., Ltd. Certified Qualifications: Designated Psychiatrist, Japanese Society of Sleep Research Specialist, Industrial Physician, Physician, Doctor of Medical Science. Joint Research Partner Colantotte Co., Ltd. President: Katsumi Komatsu Colantotte Building, 2-10-26 Minamisenba, Chuo-ku, Osaka-shi, Osaka 542-0081 TEL: 06-6258-7350 (Main) FAX: 06-6258-7360 Business Activities: Health-related product business (manufacturing and sales of permanent magnetic therapy devices for home use, healthcare goods, etc.) URL: https://colantotte.co.jp
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