Relationship between Lower Extremity Strength and Walking Speed in Elderly Inpatients

DOI 3 Citations 16 References
  • OMORI Yoshitsugu
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine Yokohama City Seibu Hospital
  • YAMASAKI Hiroshi
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine
  • YOKOYAMA Hitoshi
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine
  • AOKI Utako
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine
  • HIRAKI Kouji
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine Toyoko Hospital
  • KASAHARA Michiyo
    Department of Rehabilitation Medicine, St.Marianna University School of Medicine

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Other Title
  • 道路横断に必要な歩行速度と下肢筋力の関連
  • ―高齢入院患者における検討―

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Abstract

The purpose of this research is to investigate the lower extremity strength required for walking at a speed of 1.0 m/sec, which is the minimum speed needed to cross a pedestrian crossing in Japan. Isokinetic knee extension torque, isometric leg press force and walking speed were measured in 208 elderly inpatients with the average age of 74.7 ± 6.2. Walking speed was measured while the subjects were walking on a 10 m path. For analytic purposes, knee extension torque and leg press force/body mass ratio were calculated. The subjects were classified into two groups according to their walking speed; those who were able to attain 1.0 m/sec (Fast group; n=138) and those who were not (Slow group; n=70). Age, height, body mass index, knee extension torque and leg press force were analyzed. The logit-regression analysis shows the knee extension torque and leg press force are critical factors affecting walking speed. Patients with knee extension torque under 0.50 N・m/kg, and the leg press force under 0.60 kg/kg were found to be in the Slow group. On the other hand, patients with knee extension torque 0.90 N・m/kg or over, and the leg press force 1.10 kg/kg or over are of the Fast group. <br>For elderly inpatients, lower extremity strength is an important factor explaining the maximum walking speed and this lower extremity strength is required in crossing crosswalks in Japan.

Journal

  • Physical Therapy Japan

    Physical Therapy Japan 28 (2), 53-58, 2001-03-31

    Japanese Society of Physical Therapy

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