Association between timing of hot water bathing before bedtime and night-/sleep-time blood pressure and dipping in the elderly: a longitudinal analysis for repeated measurements in home settings.

• 資料種別: 博士論文
• タイトル: Association between timing of hot water bathing before bedtime and night-/sleep-time blood pressure and dipping in the elderly: a longitudinal analysis for repeated measurements in home settings.
• 著者・編者: Tai, Yoshiaki; Saeki, Keigo; Yamagami, Yuki; Yoshimoto, Kiyomi; Kurumatani, Norio; Nishio, Kenji; Obayashi, Kenji
• 著者標目: Tai, Yoshiaki; Saeki, Keigo; Yamagami, Yuki; Yoshimoto, Kiyomi; Kurumatani, Norio; Nishio, Kenji; Obayashi, Kenji
• 出版事項: Taylor & Francis
• 出版年月日等: 2019-12
• 出版年（W3CDTF）: 2019-12
• 並列タイトル等: 高齢者の入浴タイミングと夜間血圧低下の関連：自宅での繰り返し実測データを用いた縦断的分析
• タイトル（掲載誌）: Chronobiology international
• 巻号年月日等（掲載誌）: 36 12
• 掲載巻: 36
• 掲載号: 12
• 掲載ページ: 1714-1722
• ISSN（掲載誌）: ISSN : 0742-0528
• 授与機関名: 奈良県立医科大学
• 授与年月日: 2020-09-30
• 報告番号: 甲第751号
• 学位: 博士（医学）
• 本文の言語コード: eng
• 件名標目: Bathing; nighttime blood pressure; sleep-time blood pressure; dipping; hot water; passive body heating
• 対象利用者: 一般
• 一般注記: type:Thesis; Hot water bathing – a Japanese traditional practice – has not been evaluated for its association with night- and sleep-time blood pressure (BP) in large population. In this longitudinal analysis, bathing parameters and ambulatory BP were repeatedly measured for 2 nights in 758 Japanese elderly individuals. Participants were divided into three groups according to tertile values of time soaked in the bathtub (Duration: tertile value, 11 and 15 min), time from bathing-end to bedtime (Time before bedtime: tertile value, 42 and 106 min), and temperature of hot water in the bathtub (Water temp: tertile value, 40.3 and 41.2 °C). Participants’ mean age was 70.9 years, and mean night- and sleep-time systolic BP (SBP) and dipping were 115.1 ± 16.1, 114.2 ± 16.2 mmHg, and 14.2 ± 8.8%, respectively. Multivariable mixed-effect linear regression models adjusted for potential confounding factors suggested that nighttime SBP was significantly lower in the intermediate Time before bedtime group by 1.7 mmHg (95% CI, 0.2–3.1) and in the short group by 1.9 mmHg (95% CI, 0.1–3.7) than that in the long group. Dipping was significantly greater in the intermediate Time before bedtime group by 1.8% (95% CI, 0.7–2.9) and in the short group by 1.8% (95% CI, 0.6–3.1) than that in the long group. These associations were consistent regarding sleep-time SBP. Conversely, Water temp and Duration did not significantly associate with any ambulatory BP parameter. Remarkably, Time before bedtime significantly prolonged with increases in tertiles of Water temp (P for trend = 0.006). In conclusion, the findings of this study revealed that Japanese hot water bathing, especially the short time from bathing-end to bedtime, was associated with lower night- and sleep-time BP and greater dipping in an elderly population.; 博士（医学）・甲第751号・令和2年9月30日; This is a post-peer-review, pre-copyedit version of an article published in Chronobiology international. The final authenticated version is available online at: https://doi.org/10.1080/07420528.2019.1675685.; identifier:Chronobiology international Vol.36 No.12 p.1714-1722 (2019 Dec); identifier:07420528; identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/3775; identifier:Chronobiology international, 36(12): 1714-1722
• オンライン閲覧公開範囲: インターネット公開
• 関連情報（DOI）: 10.1080/07420528.2019.1675685
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 奈良県立医科大学 : 奈良県立医科大学機関リポジトリ GINMU

目次

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3775/1/01%e7%94%b2751%e6%9c%ac%e6%96%87%e3%81%ae%e8%a6%81%e6%97%a8.pdf fulltext

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3775/2/02%e7%94%b2751%e5%af%a9%e6%9f%bb%e8%a6%81%e6%97%a8.pdf fulltext

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3775/6/03%e7%94%b2751%e6%9c%ac%e6%96%87.pdf fulltext