000224953 001__ 224953
000224953 005__ 20181203024529.0
000224953 0247_ $$2doi$$a10.1109/Tnsre.2015.2500100
000224953 022__ $$a1534-4320
000224953 02470 $$2ISI$$a000390559600004
000224953 037__ $$aARTICLE
000224953 245__ $$aDirection-Dependent Adaptation of Dynamic Gait Stability Following Waist-Pull Perturbations
000224953 260__ $$bIeee-Inst Electrical Electronics Engineers Inc$$c2016$$aPiscataway
000224953 269__ $$a2016
000224953 300__ $$a10
000224953 336__ $$aJournal Articles
000224953 520__ $$aBalance recovery during an unexpected disturbance is a complex motor task, where part of the variability depends on the type of the perturbation itself. Despite of this, little is known to what extent adaptation mechanisms to repeated perturbations are dependent on the direction and the amplitude of the applied disturbances. Here, we used a modified version of the Active Tethered Pelvic Assist Device (A-TPAD) to apply unexpected force-controlled multidirectional waist-pull perturbations while subjects were walking. Healthy young subjects were divided into two groups and were exposed to a single training session. Each group received perturbations of different amplitudes along the Medio-Lateral (ML) or the Antero-Posterior (AP) direction. Dynamic stability was determined in both the AP and ML directions in terms of base of support (BoS) and margin of stability (MoS). Results showed: 1) an adaptation of the balance recovery reactions only for perturbations delivered along the AP directions; 2) aftereffects able to modify the control of stability during the post-training session of which type and extent depends on the direction of the perturbations previously applied; and 3) a directional and amplitude effect on the dynamic stability at the end of the balance recovery reactions. These findings could help to design perturbation-based training programs to effectively reduce falls in people with balance disorders.
000224953 6531_ $$aBalance
000224953 6531_ $$adynamic stability
000224953 6531_ $$amotor adaptation
000224953 6531_ $$aperturbation
000224953 6531_ $$awalking
000224953 700__ $$uScuola Super Sant Anna, Biorobot Inst, Pontedera, PI, Italy$$aMartelli, Dario
000224953 700__ $$uColumbia Univ, Dept Mech Engn, New York, NY 10027 USA$$aVashista, Vineet
000224953 700__ $$0246201$$g218366$$uScuola Super Sant Anna, Biorobot Inst, Pontedera, PI, Italy$$aMicera, Silvestro
000224953 700__ $$aAgrawal, Sunil K.$$uColumbia Univ, Dept Mech Engn, New York, NY 10027 USA
000224953 773__ $$j24$$tIeee Transactions On Neural Systems And Rehabilitation Engineering$$k12$$q1304-1313
000224953 909C0 $$xU12522$$0252419$$pTNE
000224953 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:224953
000224953 917Z8 $$x218366
000224953 937__ $$aEPFL-ARTICLE-224953
000224953 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000224953 980__ $$aARTICLE