PHYSIOLOGICAL STUDY OF RACE-WALKING

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  • SAITOH MINAKO
    <I>Department of Physical Fitness, Nippon College of Physical Education</I>
  • KAGAYA HIROHIKO
    <I>Department of Health and Physical Education, Faculty of Education, Saitama University</I>
  • MORII HIDEKI
    <I>Kyoto City University of Arts</I>
  • NAKAGAWA YOSHINAO
    <I>Department of Sports Sciences, Faculty of Commercial Sciences, Otaru University of Commerce</I>
  • KIMURA NAOTO
    <I>Department of Hygiene and Public Health, Nippon College of Physical Education</I>
  • YOSHIDA HIROYUKI
    <I>Department of Health and Physical Education, Faculty of Education, Saitama University</I>
  • HIROTA KOICHI
    <I>Department of Physical Fitness, Nippon College of Physical Education</I>

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Other Title
  • 競歩の生理学的研究
  • —THE RELATIONSHIP BETWEEN WALKING SPEED AND OXYGEN REQUIREMENT—
  • ―歩行スピードと酸素需要量の関係―

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The purpose of this study was to clarify some of the characteristics of race-walking, especially the relationship between walking speed and oxygen requirement, and stride in race-walking and normal walking, and to examine whether race-walking is effective for the maintenance and promotion of health.<BR>The subjects were five male race-walkers (race-walker group) and five male college students (control group) .<BR>The results obtained were as follows:<BR>1. Under race-walk conditions, the highest speeds attained in the race-walker and control groups were 200-220 m/min and 160 m/min, respectively. Under normal walking conditions, however, the values were 140 m/min in both groups.<BR>2. A lower oxygen requirement was observed at slower speed during normal walking and at a higher speed (over 130 m/min) during race-walking.<BR>3. Oxygen requirement (ml/kg/100 m) in the race-walker group was minimal at 60-80 m/min during race-walking and at 60 m/min during normal walking. Values in the control group were minimal at 60 m/min under both walking conditions.<BR>4. The oxygen requirement in the race-walker group was less than that of the control group under both walking conditions.<BR>5. Under normal walking conditions, as the speed increased, both step-length and step frequency gradually increased, until step-length reached a limit of 80 cm. Thereafter, walking was maintained only by an increase in step frequency. However, in the race-walkes group, the subjects were capable of increasing their step-length further, and maintaining a higher speed (up to 220 m/min) .<BR>6. It was suggested that race-walking is one of the most efficient exercises for maintaining and improving health.

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