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Title: Virtual pivot point : always experimentally observed in human walking?
Author(s): Vielemeyer, JohannaLook up in the Integrated Authority File of the German National Library
Schreff, Lucas
Hochstein, StefanLook up in the Integrated Authority File of the German National Library
Müller, RoyLook up in the Integrated Authority File of the German National Library
Issue Date: 2023
Type: Article
Language: English
Abstract: A main challenge in human walking is maintaining stability. One strategy to balance the whole body dynamically is to direct the ground reaction forces toward a point above the center of mass, called virtual pivot point (VPP). This strategy could be observed in various experimental studies for human and animal gait. A VPP was also observed when VPP input variables like center of mass or ground reaction forces were perturbed. In this study, the kinetic and kinematic consequences of a center of pressure manipulation and the influence on the VPP are investigated. Thus, eleven participants walked with manipulated center of pressure (i.e. barefoot, backwards, with a rigid sole, with stilts, and in handstand compared to shoe walking). In all conditions a VPP could be observed, only one participant showed no VPP in handstand walking. The vertical VPP position only differs between shoe walking and rigid sole walking, there are no significant differences between the conditions in the horizontal VPP position and the spread around the VPP. However, it is conceivable that for more severe gait changes, walking without VPP could be observed. To further analyze this issue, the authors provide a VPP calculation tool for testing data regarding the existence of the VPP.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: PLOS ONE
Publisher: PLOS
Publisher Place: San Francisco, California, US
Volume: 18
Issue: 10
Original Publication: 10.1371/journal.pone.0292874
Page Start: 1
Page End: 14
Appears in Collections:Open Access Publikationen der MLU

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