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Humans Running in Place on Water at Simulated Reduced Gravity

Figure 4

Predictions for two gravity accelerations (Earth - black and Moon - grey) are shown in terms of body mass and stride frequency.

The graphic area below the dashed curves represents the mass-frequency combinations at which water cavity seals before protraction and the impulse is not enough to run on water. The graphic area between the dashed and the solid curves represents the mass-frequency combinations at which the impulse is still not enough but the water cavity does not seal before protraction. The graphic area above the solid curves is the ‘safe area’ where mass and frequency involve a sufficient impulse and water does not seal before the end of protraction. Symbols represent the Basilisk lizard (open diamond), the Western Grebe (open circle) and humans (open square).

Figure 4