Evaluation of Methods for Quantification of the Body Fluid Volume and Screening for an Increased Tendency toward Dehydration in a Large Number of Elderly Subjects

2008 Fiscal Year Final Research Report

• Project/Area Number: 19592590
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Community health/Gerontological nurisng
• Research Institution: Kyoto Prefectural University of Medicine
• Principal Investigator: OKAYAMA Yasuko Kyoto Prefectural University of Medicine, 医学部, 教授 (50150850)
• Co-Investigator(Kenkyū-buntansha): KIMURA Misaka 京都府立医科大学, 医学部, 教授 (90150573) ; KOMATSU Mitsuyo 京都府立医科大学, 医学部, 講師 (20290223)
• Project Period (FY): 2007 – 2008
• Keywords: 高齢者 / 易脱水 / BIA法 / 体水分量 / スクリーニング

Research Abstract

BIA法を用いて簡便に高齢者の脱水発症リスクをスクリーニングできる方法の開発を目的として、本研究では、BIA法による高齢者の体水分量推定の妥当性を総合的に検討する。そのために、(1)電極配置の違いからみたBIAの身体組成推定精度、(2)多周波BIA法を用いた細胞内外液分布の加齢変化、(3)多周波BIA法を用いた高齢者の下肢筋の特徴および移動機能との関連の3点を検討した。その結果、(1)BIAの精度は、近位モデルあるいは近位と遠位電極配置を組み合わせたモデルで精度の改善がみられた。(2)加齢に伴って下腿の細胞外液/体水分量が増加することが確認された。(3)筋総体積での筋細胞量の割合は、移動機能低下・加齢の順で影響を受けており、移動機能低下により下肢筋への機械的刺激が低下し、筋細胞量低下をもたらし、さらに下肢の筋ポンプ作用が低下するため、静脈還流量が低下して間質液が貯留し、浮腫が生じた状態と考えられた。

Research Products

• [Journal Article] roximal electrode placement improves the estimation of body composition inobese and lean elderly during segmental bioelectrical impedance analysis (2009)
  • Author(s): Yosuke Yamada, Yoshihisa Masuo, Keiichi Yokoyama, Yukako Hashii, Yasuko Okayama, Soichi Ando, Taketoshi Morimoto, Misaka Kimura
  • Journal Title: European Journal of Applied Physiology (In press)
• [Presentation] 高齢者における熱中症予防のための対処方法の検討 (2008)
  • Author(s): 岡山寧子, 小松光代, 木村みさか
  • Organizer: 第2回日本セーフティプロモーション学会学術大会
  • Place of Presentation: 東京
  • Year and Date: 20081000
• [Presentation] The determinant of energy expenditure in 64-96 years-old Japanese elderly (2008)
  • Author(s): Yosuke Yamada, Naoyuki Ebine, Keiichi Yokoyama, Yasuko Okayama, Shingo Oda, and Misaka Kimura
  • Organizer: Recent Advances and Controversies in the Measurement of Energy Metabolism
  • Place of Presentation: Denver, USA, February
  • Year and Date: 20080000
• [Presentation] Validity of simplified physical activity record and dietary record in Japanese elderly (2008)
  • Author(s): Yasuko Okayama, Aya Itoi, Soichi Ando, Yosuke Yamada, Taketoshi Morimoto and Misaka Kimura
  • Organizer: Recent Advances and Controversies in the Measurement of Energy Metabolism
  • Place of Presentation: Denver, USA, February
  • Year and Date: 20080000
• [Presentation] characteristics of physical activities and nutritional intake in elderly volunteers (2008)
  • Author(s): Yosuke Yamada, Misaka Kimura,Yasuko Okayama
  • Organizer: 7th World Congress on Aging and Physical Activity
  • Place of Presentation: Tsukuba, Japan, July
  • Year and Date: 20080000
• [Presentation] SBIS法による高齢者の下肢筋量の特徴および移動機能との関連 (2007)
  • Author(s): 岡山寧子, 木村みさか, 小松光代
  • Organizer: 第33回日本看護研究学会学術集会
  • Place of Presentation: 盛岡市
  • Year and Date: 20070700
• [Presentation] Study of Seasonal Variations in Fluid Balance and Effects of Aging in Elderly Persons Requiring Nursing Care (2007)
  • Author(s): Mitsuyo Komatsu, Misaka Kimura, Yasuko Okayama
  • Organizer: ICN Conference 2007, 8th International Reglation Conference 2007
  • Place of Presentation: Yokohama, Japan, May
  • Year and Date: 20070000
• [Presentation] Physical Activity, Diet, and Obesity in Elementary School Children in a Japanese Agricultural region (2007)
  • Author(s): Misaka Kimura, Yasuko Okayama, Aya Itoi, Yosuke Yamada
  • Organizer: ACSM 54<th>Annual Meeting
  • Place of Presentation: New Orleans, USA, May
  • Year and Date: 20070000
• [Presentation] Physical Activity Level, Lefestyle, Nutrition, and Body Composition in Japanese Healthy and Frail Elderly (2007)
  • Author(s): Yosuke Yamada, Keiichi Yokoyama, Tomoaki Osaki, Y ukako Hashii, Misaka Kimura, Yasuko Okayama
  • Organizer: ACSM 54^<th> Annual Meeting(国内学会)
  • Place of Presentation: New Orleans, USA, May
  • Year and Date: 20070000