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1. The oxygen intake of four Olympic walkers was measured while walking and running at varying velocities on a treadmill at an altitude of 1800 m.
2. The relation between O2 intake and running at speeds between 8 km/hr and 21 km/hr was linear. The relation for walking at speeds up to 8 km/hr followed an upward concave curve. These findings were similar to results obtained at sea level by other investigators.
3. For walking at speeds between 8 km/hr and 14·5 km/hr the relation of O2 intake and velocity was a straight line having a slope twice that of running.
4. Maximum O2 intake in walking averaged 60·0 ml./kg/min (range 55·8-64·1 ml./kg/min) compared with 57·4 ml./kg/min (range 55·2-60·2 ml./kg/min) in running. An international class long distance runner serving as a control reached a maximum O2 intake of 70 ml./kg/min.
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J. Rubenson, D. B. Heliams, S. K. Maloney, P. C. Withers, D. G. Lloyd, and P. A. Fournier Reappraisal of the comparative cost of human locomotion using gait-specific allometric analyses J. Exp. Biol., October 15, 2007; 210(20): 3513 - 3524. [Abstract] [Full Text] [PDF] |
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