Development of an Air-controlled Futon with an In-bed Temperature Feedback Function
In this study, we developed a futon with a ventilation mechanism and an air-control method that measures the temperature inside the bed and maintains a comfortable temperature (32±2°C) using feedback control. We verified the performance of the temperature control system and evaluated the sleep quali...
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| Published in | Transactions of Japanese Society for Medical and Biological Engineering Vol. 42; no. 4; pp. 362 - 370 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
Japanese Society for Medical and Biological Engineering
10.12.2004
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1347-443X 1881-4379 |
| DOI | 10.11239/jsmbe2002.42.362 |
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| Abstract | In this study, we developed a futon with a ventilation mechanism and an air-control method that measures the temperature inside the bed and maintains a comfortable temperature (32±2°C) using feedback control. We verified the performance of the temperature control system and evaluated the sleep quality of four participants by measuring PSG (polysomnogram) . The results showed that the in-bed temperature was kept in the “comfortable temperature” zone 99.84% of the time when the subjects were in the bed using the feedback control method developed. We also confirmed the following tendencies: (1) When the air-controlled method was being used, sleep latency was marginally shortened (p<0.1), meaning that the subjects fell asleep more easily; (2) the ratio of “SWS (slow wave sleep, i. e., deep sleep)” significantly increased (p<0.05), indicating that sleep rhythms improved; and (3) the effectiveness of sleep was higher than that of the method without the air-control method. These results indicate that the air-control method developed is effective for increasing the quality of sleep. |
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| AbstractList | In this study, we developed a futon with a ventilation mechanism and an air-control method that measures the temperature inside the bed and maintains a comfortable temperature (32±2°C) using feedback control. We verified the performance of the temperature control system and evaluated the sleep quality of four participants by measuring PSG (polysomnogram) . The results showed that the in-bed temperature was kept in the “comfortable temperature” zone 99.84% of the time when the subjects were in the bed using the feedback control method developed. We also confirmed the following tendencies: (1) When the air-controlled method was being used, sleep latency was marginally shortened (p<0.1), meaning that the subjects fell asleep more easily; (2) the ratio of “SWS (slow wave sleep, i. e., deep sleep)” significantly increased (p<0.05), indicating that sleep rhythms improved; and (3) the effectiveness of sleep was higher than that of the method without the air-control method. These results indicate that the air-control method developed is effective for increasing the quality of sleep. |
| Author | YASUDA, Masashi OKADA, Shima MAKIKAWA, Masaaki FUJIWARA, Yoshihisa MATSUURA, Hidefumi KURODA, Shohei IIDA, Takeo SUZUKI, Shingo |
| Author_xml | – sequence: 1 fullname: MAKIKAWA, Masaaki organization: College of Science and Engineering, Ritsumeikan University – sequence: 1 fullname: SUZUKI, Shingo organization: Graduate School of Science and Engineering, Ritsumeikan University – sequence: 1 fullname: KURODA, Shohei organization: Graduate School of Science and Engineering, Ritsumeikan University – sequence: 1 fullname: FUJIWARA, Yoshihisa organization: Ecology and Energy Systems Development Center BU, SANYO Electric Co., Ltd – sequence: 1 fullname: IIDA, Takeo organization: College of Information Science and Engineering, Ritsumeikan University – sequence: 1 fullname: YASUDA, Masashi organization: Ecology and Energy Systems Development Center BU, SANYO Electric Co., Ltd – sequence: 1 fullname: OKADA, Shima organization: Ecology and Energy Systems Development Center BU, SANYO Electric Co., Ltd – sequence: 1 fullname: MATSUURA, Hidefumi organization: Ecology and Energy Systems Development Center BU, SANYO Electric Co., Ltd |
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| References | 22) 水貝浩次郎, 岡田志麻, 吉田智幸, 山下真司, 牧川方昭, 飯田健夫, 藤原義久: 寝床内温度および睡眠中の生理量計測と睡眠コントロールへの応用, 生体医工学, 40-Suppl. 1, 379 (2002 16) A. Rechtschaffen & A. Kales: A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects, UCLA Brain Information Service/Brain Research Institute, Los Angels (1978 3) Y. Hashizume: Fluctuation of rectal and tympanic temperatures with changes of ambient temperature during night sleep, Psychiatry Clin. Neurosci., 51,129/133 (1997 7) 宮沢モリエ他: 季節による寝床気候と睡眠経過の関係について, 家政学研究, 21-1, 99/106 (1974 19) 大野秀夫, 堀越哲美, 久野覚, 土川忠浩, 松原斎樹, 伊藤尚寛: 快適環境の科学, 朝倉書店, 東京 (1993 5) V. Candas, J. P. Libert & A. Muzet: Heating and cooling stimulations during SWS and REM sleep in man, J. Therm. Biol., 7,155/158 (1982 1) 高橋清久: 序章, 睡眠障害の対応と治療ガイドライン, 睡眠障害の診断・治療ガイドライン研究会, 内山真編, じほう, 東京 (2002 6) E. H. Haskell, J. W. Palca, J. M. Walker, R. J. Berger & H. C. Heller: The effects of high and low ambient temperatures on human sleep stages, Electroencephalogr. Clin. Neurophysiol., 51, 494/501 (1981 10) 梁瀬度子: 季節による寝床気候と睡眠経過, Ann. Physiol. Anthropol, 4-4, 331/333 (1985 11) 岡田志麻, 水貝浩次郎, 黒田征平, 鈴木伸吾, 藤原義久, 山本泰司, 米田文生, 伊藤幸夫, 牧川方昭, 飯田健夫: 寝床内フィードバック機能付きエアーコントロール蒲団の評価, 生体医工学, 42-Suppl., 399 (2004 15) 久保博子, 赤木博子, 梁瀬度子, 多田智徳: 終夜睡眠時における睡眠深度, 皮膚温, 睡眠満足度について, 人間工学, 35-特別号2, 456/457 (1999 2) 梁瀬度子: 寝室環境と睡眠, 日本睡眠学会 編, 睡眠学ハンドブック, 97/100, 朝倉書店, 東京 (1994 12) 山本由華吏, 田中秀樹, 山崎勝男, 白川修一郎: 入眠感調査表の開発と入眠影響因子の解析, 心理学研究, 74-2, 140/147 (2003 18) 佐々尚美, 久保博子, 磯田憲生: 温熱性快適性の個人差, 日本建築学会環境工学委員会熱環境小委員会熱シンポジウム論文集, 28, 1/8 (1998 21) V. Bach, F. Telliez, A. Leke, C. Chiorri & J. Libert: Interaction between body temperatures and the direction of sleep stage transition in neonates. Sleep Res. Online, 4-1, 43/49 (2001 4) 中山昭雄, 入來正躬: 体温調節の生理学, 医学書院, 東京 (1987 9) 石津京二, 石黒晃子, 鉾井修一: 空調運転による快適な睡眠環境の創造に向けて, 第18回生体・生理工学シンポジウム論文集, 343/346 (2003 17) 太田正実, 三木美穂子, 横山真太郎: 睡眠, 人間工学基準数値便覧, 佐藤方彦 監修, 25370-2, 技報堂出版, 東京 (1992 8) 宮島朝子, 若村智子, 柴田しおり, 志村満子, 大原美香, 近田敬子, 柴田真志: 高齢者の睡眠に及ぼす寝床内暖房器具の影響, 看護研究, 32-6, 23/33 (1999 14) 小栗貢, 白川修一郎, 安住一雄: OSA睡眠調査票の開発, 精神医学, 27, 791/799 (1985 13) 吉田倫幸: 脳波のゆらぎ計測と快適評価, 日本音響学会誌, 46-11, 924/919 (1990 20) J. P. Libert, V. Candas, A. Muzet & J. Erhart: Thermoregulatory adjustments to thermal transients during slow wave sleep and REM sleep in man, J. Physiol. (Paris), 78, 251/257 (1982 |
| References_xml | – reference: 6) E. H. Haskell, J. W. Palca, J. M. Walker, R. J. Berger & H. C. Heller: The effects of high and low ambient temperatures on human sleep stages, Electroencephalogr. Clin. Neurophysiol., 51, 494/501 (1981) – reference: 15) 久保博子, 赤木博子, 梁瀬度子, 多田智徳: 終夜睡眠時における睡眠深度, 皮膚温, 睡眠満足度について, 人間工学, 35-特別号2, 456/457 (1999) – reference: 8) 宮島朝子, 若村智子, 柴田しおり, 志村満子, 大原美香, 近田敬子, 柴田真志: 高齢者の睡眠に及ぼす寝床内暖房器具の影響, 看護研究, 32-6, 23/33 (1999) – reference: 21) V. Bach, F. Telliez, A. Leke, C. Chiorri & J. Libert: Interaction between body temperatures and the direction of sleep stage transition in neonates. Sleep Res. Online, 4-1, 43/49 (2001) – reference: 16) A. Rechtschaffen & A. Kales: A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects, UCLA Brain Information Service/Brain Research Institute, Los Angels (1978) – reference: 13) 吉田倫幸: 脳波のゆらぎ計測と快適評価, 日本音響学会誌, 46-11, 924/919 (1990) – reference: 19) 大野秀夫, 堀越哲美, 久野覚, 土川忠浩, 松原斎樹, 伊藤尚寛: 快適環境の科学, 朝倉書店, 東京 (1993) – reference: 5) V. Candas, J. P. Libert & A. Muzet: Heating and cooling stimulations during SWS and REM sleep in man, J. Therm. Biol., 7,155/158 (1982) – reference: 4) 中山昭雄, 入來正躬: 体温調節の生理学, 医学書院, 東京 (1987) – reference: 7) 宮沢モリエ他: 季節による寝床気候と睡眠経過の関係について, 家政学研究, 21-1, 99/106 (1974) – reference: 17) 太田正実, 三木美穂子, 横山真太郎: 睡眠, 人間工学基準数値便覧, 佐藤方彦 監修, 25370-2, 技報堂出版, 東京 (1992) – reference: 1) 高橋清久: 序章, 睡眠障害の対応と治療ガイドライン, 睡眠障害の診断・治療ガイドライン研究会, 内山真編, じほう, 東京 (2002) – reference: 20) J. P. Libert, V. Candas, A. Muzet & J. Erhart: Thermoregulatory adjustments to thermal transients during slow wave sleep and REM sleep in man, J. Physiol. (Paris), 78, 251/257 (1982) – reference: 3) Y. Hashizume: Fluctuation of rectal and tympanic temperatures with changes of ambient temperature during night sleep, Psychiatry Clin. Neurosci., 51,129/133 (1997) – reference: 11) 岡田志麻, 水貝浩次郎, 黒田征平, 鈴木伸吾, 藤原義久, 山本泰司, 米田文生, 伊藤幸夫, 牧川方昭, 飯田健夫: 寝床内フィードバック機能付きエアーコントロール蒲団の評価, 生体医工学, 42-Suppl., 399 (2004) – reference: 12) 山本由華吏, 田中秀樹, 山崎勝男, 白川修一郎: 入眠感調査表の開発と入眠影響因子の解析, 心理学研究, 74-2, 140/147 (2003) – reference: 22) 水貝浩次郎, 岡田志麻, 吉田智幸, 山下真司, 牧川方昭, 飯田健夫, 藤原義久: 寝床内温度および睡眠中の生理量計測と睡眠コントロールへの応用, 生体医工学, 40-Suppl. 1, 379 (2002) – reference: 2) 梁瀬度子: 寝室環境と睡眠, 日本睡眠学会 編, 睡眠学ハンドブック, 97/100, 朝倉書店, 東京 (1994) – reference: 9) 石津京二, 石黒晃子, 鉾井修一: 空調運転による快適な睡眠環境の創造に向けて, 第18回生体・生理工学シンポジウム論文集, 343/346 (2003) – reference: 10) 梁瀬度子: 季節による寝床気候と睡眠経過, Ann. Physiol. Anthropol, 4-4, 331/333 (1985) – reference: 14) 小栗貢, 白川修一郎, 安住一雄: OSA睡眠調査票の開発, 精神医学, 27, 791/799 (1985) – reference: 18) 佐々尚美, 久保博子, 磯田憲生: 温熱性快適性の個人差, 日本建築学会環境工学委員会熱環境小委員会熱シンポジウム論文集, 28, 1/8 (1998) |
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| SubjectTerms | quality of sleep sleep efficiency sleep latency SWS (slow wave sleep) temperature inside bed |
| Title | Development of an Air-controlled Futon with an In-bed Temperature Feedback Function |
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