Center of pressure and total force analyses for amputees walking with a backpack load over four surfaces.

Autor: Sinitski EH; Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada. Electronic address: esinitski@toh.on.ca., Herbert-Copley AG; Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada., Lemaire ED; Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada; University of Ottawa, Faculty of Medicine, 451 Smyth Rd., Ottawa, ON, K1H 8M5, Canada., Doyle SS; University of Ottawa, School of Human Kinetics, 125 University Private, Ottawa, ON K1N 6N5, Canada., Besemann M; Canadian Forces Health Services Group, 1745 Alta Vista Drive, Ottawa ON, K1A 0K6, Canada., Dudek NL; Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada; University of Ottawa, Faculty of Medicine, 451 Smyth Rd., Ottawa, ON, K1H 8M5, Canada.
Jazyk: angličtina
Zdroj: Applied ergonomics [Appl Ergon] 2016 Jan; Vol. 52, pp. 169-76. Date of Electronic Publication: 2015 Jul 31.
DOI: 10.1016/j.apergo.2015.07.014
Abstrakt: Understanding how load carriage affects walking is important for people with a lower extremity amputation who may use different strategies to accommodate to the additional weight. Nine unilateral traumatic transtibial amputees (K4-level) walked over four surfaces (level-ground, uneven ground, incline, decline) with and without a 24.5 kg backpack. Center of pressure (COP) and total force were analyzed from F-Scan insole pressure sensor data. COP parameters were greater on the intact limb than on the prosthetic limb, which was likely a compensation for the loss of ankle control. Double support time (DST) was greater when walking with a backpack. Although longer DST is often considered a strategy to enhance stability and/or reduce loading forces, changes in DST were only moderately correlated with changes in peak force. High functioning transtibial amputees were able to accommodate to a standard backpack load and to maintain COP progression, even when walking over different surfaces.
(Crown Copyright © 2015. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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