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Adult age differences in familiarization to treadmill walking within virtual environments

Schellenbach, Michael; Lövdén, Martin LU ; Verrel, Julius; Krueger, Antonio and Lindenberger, Ulman (2010) In Gait & Posture 31(3). p.295-299
Abstract
We assessed age-related differences in adults in familiarization to treadmill walking within virtual environments (VE), and examined whether treadmill walking after familiarization resembles overground walking. Seventeen younger and 17 older adults walked at preferred speed on an overground walkway and afterwards walked at the same speed for 20 min on a treadmill coupled to a VE. A motion capture system was used to measure spatio-temporal gait parameters. On the treadmill, both younger and older adults initially displayed decreased step length and increased step width, cadence, and time in double support relative to overground walking. Except for time in double support, step characteristics approached overground walking-behavior with a... (More)
We assessed age-related differences in adults in familiarization to treadmill walking within virtual environments (VE), and examined whether treadmill walking after familiarization resembles overground walking. Seventeen younger and 17 older adults walked at preferred speed on an overground walkway and afterwards walked at the same speed for 20 min on a treadmill coupled to a VE. A motion capture system was used to measure spatio-temporal gait parameters. On the treadmill, both younger and older adults initially displayed decreased step length and increased step width, cadence, and time in double support relative to overground walking. Except for time in double support, step characteristics approached overground walking-behavior with a negatively accelerated trend. After 15 min of treadmill walking, changes became minor corresponding to less than 1% deviations to individuals' overground walking. At the end of familiarization, average differences in step length, cadence, and double support relative to overground walking were reduced to less than 5 percent in both age groups. For step width, younger adults approximated overground walking after 20 min more closely than older adults, probably reflecting larger initial differences between treadmill and overground walking among older adults. We conclude (a) that 20 min of familiarization to treadmill walking in a VE are sufficient to reach stable walking patterns resembling those observed in overground walking, but that some differences between the two settings remain, especially in older adults; (b) that sufficient familiarization to the treadmill is needed to ascertain the validity and generalizability of comparisons between younger and older adults. (C) 2009 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Virtual environments, Aging, Treadmill, Walking
in
Gait & Posture
volume
31
issue
3
pages
295 - 299
publisher
Elsevier
external identifiers
  • wos:000276155800001
  • scopus:76749141346
ISSN
1879-2219
DOI
10.1016/j.gaitpost.2009.11.008
language
English
LU publication?
yes
id
950fc668-a1e5-47f0-9aa8-a051504709c5 (old id 1587064)
date added to LUP
2010-04-27 10:00:47
date last changed
2018-05-29 11:16:10
@article{950fc668-a1e5-47f0-9aa8-a051504709c5,
  abstract     = {We assessed age-related differences in adults in familiarization to treadmill walking within virtual environments (VE), and examined whether treadmill walking after familiarization resembles overground walking. Seventeen younger and 17 older adults walked at preferred speed on an overground walkway and afterwards walked at the same speed for 20 min on a treadmill coupled to a VE. A motion capture system was used to measure spatio-temporal gait parameters. On the treadmill, both younger and older adults initially displayed decreased step length and increased step width, cadence, and time in double support relative to overground walking. Except for time in double support, step characteristics approached overground walking-behavior with a negatively accelerated trend. After 15 min of treadmill walking, changes became minor corresponding to less than 1% deviations to individuals' overground walking. At the end of familiarization, average differences in step length, cadence, and double support relative to overground walking were reduced to less than 5 percent in both age groups. For step width, younger adults approximated overground walking after 20 min more closely than older adults, probably reflecting larger initial differences between treadmill and overground walking among older adults. We conclude (a) that 20 min of familiarization to treadmill walking in a VE are sufficient to reach stable walking patterns resembling those observed in overground walking, but that some differences between the two settings remain, especially in older adults; (b) that sufficient familiarization to the treadmill is needed to ascertain the validity and generalizability of comparisons between younger and older adults. (C) 2009 Elsevier B.V. All rights reserved.},
  author       = {Schellenbach, Michael and Lövdén, Martin and Verrel, Julius and Krueger, Antonio and Lindenberger, Ulman},
  issn         = {1879-2219},
  keyword      = {Virtual environments,Aging,Treadmill,Walking},
  language     = {eng},
  number       = {3},
  pages        = {295--299},
  publisher    = {Elsevier},
  series       = {Gait & Posture},
  title        = {Adult age differences in familiarization to treadmill walking within virtual environments},
  url          = {http://dx.doi.org/10.1016/j.gaitpost.2009.11.008},
  volume       = {31},
  year         = {2010},
}