Abstract
Abstract This study examines how human postural responses are altered by leaning about the ankles to five different initial stance positions prior to anterior or posterior horizontal translations of the support surface. When subjects leaned in the same direction as the translation-induced sway, postural strategies changed to use of less ankle torque and more horizontal shear forces at the surface to return to equilibrium. This change in strategy was associated with reduced and delayed activation of the stretched ankle muscles and an increased activation of proximal muscles producing rapid hip flexions or extensions. The changes in ankle muscle activation strength and latencies cannot be predicted based on simple stretch or load reflexes, but match predictions from computational, biomechanical models of human stance co-ordination1–4.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
