Physiological study of race-walking. The relationship between walking speed and oxygen requirement.
- VernacularTitle:競歩の生理学的研究 歩行スピードと酸素需要量の関係
- Author:
MINAKO SAITOH
;
HIROHIKO KAGAYA
;
HIDEKI MORII
;
YOSHINAO NAKAGAWA
;
NAOTO KIMURA
;
HIROYUKI YOSHIDA
;
KOICHI HIROTA
- Publication Type:Journal Article
- Keywords:
Race-walking;
Walking speed;
Oxygen requirement;
Stride
- From:Japanese Journal of Physical Fitness and Sports Medicine
1991;40(1):31-40
- CountryJapan
- Language:Japanese
-
Abstract:
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.
The subjects were five male race-walkers (race-walker group) and five male college students (control group) .
The results obtained were as follows:
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.
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.
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.
4. The oxygen requirement in the race-walker group was less than that of the control group under both walking conditions.
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) .
6. It was suggested that race-walking is one of the most efficient exercises for maintaining and improving health.
