The right lateral decubitus position may attenuate sympathetic nervous activity in elderly adults

• Project/Area Number: 17K19783
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Research Field: Society medicine, Nursing, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Maruyama Ryoko 東北大学, 医学系研究科, 教授 (10275498)
• Co-Investigator(Kenkyū-buntansha): 菅野 恵美 東北大学, 医学系研究科, 准教授 (10431595) ; 丹野 寛大 東北大学, 医学系研究科, 助教 (10755664) ; 佐々木 康之輔 東北大学, 医学系研究科, 助教 (50755642)
• Research Collaborator: HOSHI Junko ; SUN Xinru
• Project Period (FY): 2017-06-30 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 高齢者 / 自律神経活動 / 体位変換 / 循環動態 / 心拍変動 / 体位

Outline of Final Research Achievements

This study was to evaluate the effect of the spine, left lateral decubitus, and right lateral decubitus position on autonomic nervous activity elderly by using spectral analysis heart rate variability (HRV). Forty-five elderly adults were enrolled. The lowest heart rate continued for 10 min, when participants were left lateral decubitus position on compared with the other two positions, The low frequency HRV to high-frequency HRV ratio (LF/HF) for the right lateral decubitus position was significantly lower than that for the other position. The right lateral decubitus position may attenuate sympathetic nerve activity in elder adults.

Academic Significance and Societal Importance of the Research Achievements

急速に高齢化する日本において、手術を受ける高齢者も増加しているが、高齢者を対象に体位変換時の自律神経活動を評価した検証はない。本研究は、体位変換時の高齢者が加齢による影響で、交感神経活動の増加と副交感神経活動の低下に伴って生じる仰臥位から左右左側臥位時の変化を検証し、体位の変換を行う場合は最初に右側臥位を選択することが、心臓への負荷を低下させ、より安全である可能性を見出した。この結果は術後だけでなく、日常生活の体位変換おいても有益な知見と考える。

Research Products

• [Journal Article] The Cardiac Sympathetic Nerve Activity in the Elderly Is Attenuated in the Right Lateral Decubitus Position (2017)
  • Author(s): Konosuke Sasaki, Mayu Haga, Sarina Bao, Haruka Sato, Yoshikatsu Saiki, Ryoko Maruyama
  • Journal Title: Gerontology & Geriatric Medicine Volume: 3 Pages: 1-9
  • DOI: 10.1177/2333721417708071
  • Peer Reviewed / Open Access
• [Presentation] Comparison of sprinter and distance runners cardiovascular dynamics and autonomic nervous system activity responses. (2019)
  • Author(s): X.Sun, M.Nozawa, S.Saito, J.Hoshi, H.Tanno. E.Kanno, R.Maruyama
  • Organizer: FAOPS 2019
  • Int'l Joint Research
• [Presentation] Does listening to Morzart's or Bach's music have any effects on autonomic activity? (2019)
  • Author(s): J. Hoshi, X.Sun, H.Tanno, E.Kanno, R.Maruyama
  • Organizer: FAOPS 2019
  • Int'l Joint Research
• [Presentation] Evaluation of cardiovascular hemodynamics in response to recumbent position by using magnetic resonance imaging. (2018)
  • Author(s): K. Sasaki, H.Ota, T.Kimura, T.Onuma, T.Nagasaka, Y.Saiki, R.Maruyama
  • Organizer: Experimental Biology 2018
  • Int'l Joint Research
• [Presentation] Do sprinter and distance runners have the same autonomic nervous activity and hemodynamics responses? (2018)
  • Author(s): X.Sun , S. Saito, H.Yang, J.Hoshi, H.Tanno, E.Kanno, R.Maruyama
  • Organizer: Experimental Biology 2018
  • Int'l Joint Research
• [Presentation] Morzart's and Bach's music yielded little relaxation effect as indicated HR .BP, and autonomic nervous activity (2018)
  • Author(s): J.Hoshi, H,Yong, X.Sun, H.Tannno, E.Kanno, R.Maruyama
  • Organizer: Experimental Biology 2018
  • Int'l Joint Research
• [Presentation] Sex and age differences in cardiac autonomic nervous regulation in response in recumbent positions. (2017)
  • Author(s): Kounosuke Sasaki, Sarina Bao, Haruka Sato, Yoshikatsu Saiki, Ryoko Maruyama
  • Organizer: Experimental Biology 2017
  • Int'l Joint Research