Human and avian running on uneven ground: a model-based comparison

  • R. Müller
    Motionscience, Friedrich-Schiller-University Jena, Jena, Germany
  • A. V. Birn-Jeffery
    Department of Zoology, University of Cambridge, Cambridge, UK
  • Y. Blum
    Motionscience, Friedrich-Schiller-University Jena, Jena, Germany

書誌事項

公開日
2016-09
権利情報
  • https://royalsociety.org/journals/ethics-policies/data-sharing-mining/
DOI
  • 10.1098/rsif.2016.0529
公開者
The Royal Society

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説明

<jats:p>Birds and humans are successful bipedal runners, who have individually evolved bipedalism, but the extent of the similarities and differences of their bipedal locomotion is unknown. In turn, the anatomical differences of their locomotor systems complicate direct comparisons. However, a simplifying mechanical model, such as the conservative spring–mass model, can be used to describe both avian and human running and thus, provides a way to compare the locomotor strategies that birds and humans use when running on level and uneven ground. Although humans run with significantly steeper leg angles at touchdown and stiffer legs when compared with cursorial ground birds, swing-leg adaptations (leg angle and leg length kinematics) used by birds and humans while running appear similar across all types of uneven ground. Nevertheless, owing to morphological restrictions, the crouched avian leg has a greater range of leg angle and leg length adaptations when coping with drops and downward steps than the straight human leg. On the other hand, the straight human leg seems to use leg stiffness adaptation when coping with obstacles and upward steps unlike the crouched avian leg posture.</jats:p>

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