Natural Frequency Method: estimating the preferred walking speed of Tyrannosaurus rex based on tail natural frequency

  title={Natural Frequency Method: estimating the preferred walking speed of Tyrannosaurus rex based on tail natural frequency},
  author={Pasha A. van Bijlert and Arthur J. van Soest and Anne S. Schulp},
  journal={Royal Society Open Science},
Locomotor energetics are an important determinant of an animal's ecological niche. It is commonly assumed that animals minimize locomotor energy expenditure by selecting gait kinematics tuned to the natural frequencies of relevant body parts. We demonstrate that this allows estimation of the preferred step frequency and walking speed of Tyrannosaurus rex, using an approach we introduce as the Natural Frequency Method. Although the tail of bipedal dinosaurs was actively involved in walking, it… 
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