Title: Fast online corrections of tripping responses
Authors: Potocanac, Zrinka ×
de Bruin, Janneke
van der Veen, Susanne
Verschueren, Sabine
van Dieën, Jaap
Duysens, Jaak
Pijnappels, Mirjam #
Issue Date: Nov-2014
Publisher: Springer-Verlag
Series Title: Experimental Brain Research vol:232 issue:11 pages:3579-3590
Abstract: Tripping over obstacles is one of the main causes of falls. One potential hazard to actually fall when tripped is inadequate foot landing. Adequate landing is required to control the body's angular momentum, while avoiding dangerous surfaces (slippery patch, uneven ground). To avoid such dangers, foot trajectory needs to be controlled by inhibiting and adjusting the initiated recovery foot path during a tripping reaction. We investigated whether such adjustments can be made without jeopardizing balance recovery. Sixteen healthy young adults (25.1 ± 3.2 years) walked at their comfortable speed over a walkway equipped with 14 hidden obstacles. Participants were tripped 10 times in between a random number of normal walking trials; five trips included a projection of a forbidden zone (FZ, 30 × 50 cm) at the subject's preferred landing position. Participants were instructed to land their recovery foot outside the FZ, if the FZ was presented. Responses were evaluated in terms of foot position and body angular momentum at and following recovery foot landing. Participants successfully landed their recovery foot outside the FZ in 80 % of trials, using strategies of either shortening their recovery steps (84 %) or side stepping (16 %). Their performance improved over trials, and some participants switched strategies. Angular momenta of the adjusted steps remained small at and following recovery foot landing. Young adults can quickly change foot trajectory after tripping by using different strategies, and without detrimental consequences on balance recovery, in terms of the angular momentum. These results open possibilities for training of tripping reactions.
ISSN: 0014-4819
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group for Musculoskeletal Rehabilitation
Movement Control & Neuroplasticity Research Group
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
EBR tripping.pdf Accepted 1642KbAdobe PDFView/Open
fast online corrections of tripping responses.pdf Published 843KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science