The foot and ankle structures reveal emergent properties analogous to passive springs during human walking.

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  • Additional Information
    • Publication Year:
      2019
    • Author-Supplied Keywords:
      Anatomy
      Animal physiology
      Ankle joints
      Ankles
      Assistive technologies
      Bioengineering
      Biological locomotion
      Biology and life sciences
      Biotechnology
      Body height
      Body limbs
      Engineering and technology
      Exoskeleton
      Feet
      Legs
      Material properties
      Materials science
      Mechanical properties
      Medical devices and equipment
      Medicine and health sciences
      Musculoskeletal system
      Physical sciences
      Physiological parameters
      Physiology
      Prosthetics
      Research Article
      Skeletal joints
      Stiffness
      Walking
      Zoology
    • Abstract:
      An objective understanding of human foot and ankle function can drive innovations of bio-inspired wearable devices. Specifically, knowledge regarding how mechanical force and work are produced within the human foot-ankle structures can help determine what type of materials or components are required to engineer devices. In this study, we characterized the combined functions of the foot and ankle structures during walking by synthesizing the total force, displacement, and work profiles from structures distal to the shank. Eleven healthy adults walked at four scaled speeds. We quantified the ground reaction force and center-of-pressure displacement in the shank’s coordinate system during stance phase and the total mechanical work done by these structures. This comprehensive analysis revealed emergent properties of foot-ankle structures that are analogous to passive springs: these structures compressed and recoiled along the longitudinal axis of the shank, and performed near zero or negative net mechanical work across a range of walking speeds. Moreover, the subject-to-subject variability in peak force, total displacement, and work were well explained by three simple factors: body height, mass, and walking speed. We created a regression-based model of stance phase mechanics that can inform the design and customization of wearable devices that may have biomimetic or non-biomimetic structures. [ABSTRACT FROM AUTHOR]
    • Abstract:
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    • ISSN:
      19326203
    • Accession Number:
      136872616
  • Citations
    • ABNT:
      HEDRICK, E. A.; STANHOPE, S. J.; TAKAHASHI, K. Z. The foot and ankle structures reveal emergent properties analogous to passive springs during human walking. PLoS ONE, [s. l.], v. 14, n. 6, p. 1, 2019. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616. Acesso em: 8 dez. 2019.
    • AMA:
      Hedrick EA, Stanhope SJ, Takahashi KZ. The foot and ankle structures reveal emergent properties analogous to passive springs during human walking. PLoS ONE. 2019;14(6):1. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616. Accessed December 8, 2019.
    • APA:
      Hedrick, E. A., Stanhope, S. J., & Takahashi, K. Z. (2019). The foot and ankle structures reveal emergent properties analogous to passive springs during human walking. PLoS ONE, 14(6), 1. Retrieved from http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616
    • Chicago/Turabian: Author-Date:
      Hedrick, Erica A., Steven J. Stanhope, and Kota Z. Takahashi. 2019. “The Foot and Ankle Structures Reveal Emergent Properties Analogous to Passive Springs during Human Walking.” PLoS ONE 14 (6): 1. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616.
    • Harvard:
      Hedrick, E. A., Stanhope, S. J. and Takahashi, K. Z. (2019) ‘The foot and ankle structures reveal emergent properties analogous to passive springs during human walking’, PLoS ONE, 14(6), p. 1. Available at: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616 (Accessed: 8 December 2019).
    • Harvard: Australian:
      Hedrick, EA, Stanhope, SJ & Takahashi, KZ 2019, ‘The foot and ankle structures reveal emergent properties analogous to passive springs during human walking’, PLoS ONE, vol. 14, no. 6, p. 1, viewed 8 December 2019, .
    • MLA:
      Hedrick, Erica A., et al. “The Foot and Ankle Structures Reveal Emergent Properties Analogous to Passive Springs during Human Walking.” PLoS ONE, vol. 14, no. 6, June 2019, p. 1. EBSCOhost, search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616.
    • Chicago/Turabian: Humanities:
      Hedrick, Erica A., Steven J. Stanhope, and Kota Z. Takahashi. “The Foot and Ankle Structures Reveal Emergent Properties Analogous to Passive Springs during Human Walking.” PLoS ONE 14, no. 6 (June 7, 2019): 1. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616.
    • Vancouver/ICMJE:
      Hedrick EA, Stanhope SJ, Takahashi KZ. The foot and ankle structures reveal emergent properties analogous to passive springs during human walking. PLoS ONE [Internet]. 2019 Jun 7 [cited 2019 Dec 8];14(6):1. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edb&AN=136872616