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Figure 8


Fig. 8. Net metabolic rate Emet exhibited a U-shaped curve as a function of arc radius {rho}. For small radii, metabolic rate decreased with {rho} much as predicted by the Simplest Model (Fig. 2). However, metabolic rate reached a minimum at {rho}=0.30 according to the Empirical Fit of Eqn 11, r2=0.86, and began to increase with larger {rho}. The energetic cost of walking was 59% higher than the minimum for the smallest arcs, and higher for all arc radii compared to normal walking (broken line). Different coloured symbols indicate different subjects.





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