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Fig. 4. (A) Toddlers' mean oscillations in Ep and Ek (± S.D.), are plotted as a function of gait cycle duration. The shaded bars indicate the double support phase. Both Ep as Ek show a sinusoidal oscillation with two maxima and two minima occurring during one gait cycle. The oscillations in Ep are largest and almost completely determine the total mechanical energy fluctuations. (B) The average kinetic energy fluctuations in the forward (y), lateral (x) and vertical (z) directions are plotted as a function of gait cycle duration. Ek is entirely determined by the forward kinetic energy fluctuations.





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