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Relationship Between Orthostatic Blood Pressure Changes and Postural Sway When Standing up from a Chair in Older Adult Females


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タイトル: Relationship Between Orthostatic Blood Pressure Changes and Postural Sway When Standing up from a Chair in Older Adult Females
著者: Murata, Jun / Murata, Shin / Horie, Jun / Ohtao, Hiroshi / Miyazaki, Junya
発行日: 2012年 9月
出版者: Elsevier Taiwan LLC
引用: International Journal of Gerontology, 6(3), pp.182-186; 2012
抄録: Background: Orthostatic reductions in blood pressure upon standing are common among the elderly. This orthostatic blood pressure changes may relate to the augmentation of postural sway and may be an important risk factor for falls. Thus, to clarify whether orthostatic blood pressure change on standing up from a chair is relevant to postural sway, we simultaneously measured changes in blood pressure and the movement of a weighted center upon standing. Methods: A total of 63 older adult females were investigated. Blood pressure [systolic blood pressure (SBP), diastolic BP] measured in a sitting position were defined as the baseline levels. The movement of center of pressure (COP) was measured using a stable force platform to quantify postural stability. Participants were instructed to stand up from a chair on the platform and maintain an upright position with their eyes open for 40 seconds. Upon standing, the participant's blood pressure and the movement of COP were recorded. Pearson's correlation was performed to determine relationships between the changes in BP and the movement of COP [distance of the movement of COP (LNG), envelopment area traced by the movement of COP (AREA)]. Results: SBP was reduced while maintaining an upright position for 40 seconds (-5.0 ± 8.6 mmHg), but not diastolic BP (0.6 ± 4.3 mmHg). Moreover, the change in SBP showed a negative relationship with LNG (r = -0.43, p < 0.01) and AREA (r = -0.31, p < 0.05). Conclusion: These results suggested that postural change influenced SBP, and that the drop of SBP was associated with augmentation of postural instability in older adult females.
キーワード: balance / blood pressure / elderly / orthostatic stress / posture
URI: http://hdl.handle.net/10069/30706
ISSN: 18739598
DOI: 10.1016/j.ijge.2012.01.011
権利: © 2012, Taiwan Society of Geriatric Emergency & Critical Care Medicine. Published by Elsevier. / NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Gerontology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Gerontology, 6, 3(2012)
資料タイプ: Journal Article
原稿種類: author
出現コレクション:030 学術雑誌論文

引用URI : http://hdl.handle.net/10069/30706

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