Novel methodology for assessing total recovery time in response to unexpected perturbations while walking.
Accidental Falls
/ prevention & control
Adult
Aged
Aging
/ physiology
Algorithms
Biomechanical Phenomena
Cognition
Feasibility Studies
Female
Gait
/ physiology
Gait Analysis
/ statistics & numerical data
Humans
Male
Middle Aged
Models, Biological
Pilot Projects
Postural Balance
/ physiology
Principal Component Analysis
Task Performance and Analysis
Time Factors
Walking
/ physiology
Young Adult
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2020
2020
Historique:
received:
13
11
2019
accepted:
06
05
2020
entrez:
4
6
2020
pubmed:
4
6
2020
medline:
25
8
2020
Statut:
epublish
Résumé
Walking stability is achieved by adjusting the medio-lateral and anterior-posterior dimensions of the base of support (step length and step width, respectively) to contain an extrapolated center of mass. We aimed to calculate total recovery time after different types of perturbations during walking, and use it to compare young and older adults following different types of perturbations. Walking trials were performed in 12 young (age 26.92 ± 3.40 years) and 12 older (age 66.83 ± 1.60 years) adults. Perturbations were introduced at different phases of the gait cycle, on both legs and in anterior-posterior or medio-lateral directions, in random order. A novel algorithm was developed to determine total recovery time values for regaining stable step length and step width parameters following the different perturbations, and compared between the two participant groups under low and high cognitive load conditions, using principal component analysis (PCA). We analyzed 829 perturbations each for step length and step width. The algorithm successfully estimated total recovery time in 91.07% of the runs. PCA and statistical comparisons showed significant differences in step length and step width recovery times between anterior-posterior and medio-lateral perturbations, but no age-related differences. Initial analyses demonstrated the feasibility of comparisons based on total recovery time calculated using our algorithm.
Identifiants
pubmed: 32492029
doi: 10.1371/journal.pone.0233510
pii: PONE-D-19-31620
pmc: PMC7269230
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0233510Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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