Effects of Reclining Angle on Changes in Hemodynamics and Anaerobic Metabolic Threshold during Bicycle Ergometry

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  • YAMAZAKI Hiroki
    Department of Medical Rehabilitation Services, Gyoda General Hospital
  • KOBAYAKAWA Ryo
    Department of Medical Rehabilitation Services, Koseikai Hospital
  • YŪKI Mai
    Department of Medical Rehabilitation Services, Koseikai Hospital
  • NISHIZAWA Gaku
    Department of Medical Rehabilitation Services, Shin-Katsushika Hospital
  • FUKUDA Tomomi
    Department of Physical Therapy, Faculty of Health Science Technology, Bunkyo Gakuin University
  • SHOBO Akira
    Department of Physical Therapy, Faculty of Health Science Technology, Bunkyo Gakuin University

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Other Title
  • リカンベント式エルゴメータ駆動時のリクライニング角度の違いによる嫌気性代謝域値と血行動態の変化
  • リカンベントシキ エルゴメータ クドウジ ノ リクライニング カクド ノ チガイ ニ ヨル イヤケセイ タイシャイキチ ト ケッコウ ドウタイ ノ ヘンカ

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Abstract

[Purpose] This study investigated the ideal reclining angle for bicycle ergometry in relation to individuals’ anaerobic thresholds (AT) and hemodynamics. [Subjects and Methods] The participants were 14 sedentary healthy men with a mean age of 20.8 years, mean body mass of 64.5 kg, mean height of 171.1 cm and a mean body mass index of 22.0 kg/m2. Reclining angles of 20°, 45° and 70° were used, and hemodynamic changes were measured until AT was reached. [Results] Compared to the resting period, mean blood pressure at a reclining angle of 70° was significantly increased, and sympathetic nerve activity at 20°. Oxygen intake increased significantly at 45° and 70° compared with that of 20°. [Conclusion] A reclining angle of 45° may be the most efficient. For hypotensive individuals elevating the legs is desirable, while the gravity-dependent position is best for normal and hypertensive individuals.

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 32 (1), 63-67, 2017

    The Society of Physical Therapy Science

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