Wearable-based assessment of anticipatory postural adjustments during step initiation in patients with knee osteoarthritis.

Autor: Oliveira LKR; Laboratório de Estudos da Motricidade Humana, Universidade Federal do Pará, Belém, PA, Brasil.; Associação das Pioneiras Sociais, Brasília, DF, Brasil., Marques AP; Department of Physiotherapy, Speech Therapy and Occupational Therapy, Faculty of Medicine, University of São Paulo, São Paulo, Brazil., Igarashi Y; Laboratório de Estudos da Motricidade Humana, Universidade Federal do Pará, Belém, PA, Brasil., Andrade KFA; Laboratório de Estudos da Motricidade Humana, Universidade Federal do Pará, Belém, PA, Brasil., Souza GS; Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil.; Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, PA, Brasil., Callegari B; Laboratório de Estudos da Motricidade Humana, Universidade Federal do Pará, Belém, PA, Brasil.; Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, PA, Brasil.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2023 Aug 10; Vol. 18 (8), pp. e0289588. Date of Electronic Publication: 2023 Aug 10 (Print Publication: 2023).
DOI: 10.1371/journal.pone.0289588
Abstrakt: Older adults with moderate to severe knee osteoarthritis (KOA) exhibit adaptive strategy for initiating walking, known as anticipatory postural adjustments (APAs). While video motion kinematics has been the traditional way of measuring APAs, it can be difficult to transport and install, making it impractical for medical settings. Inertial sensors have become a more popular method for evaluating APAs, but no prior research has used accelerometers to measure gait initiation in individuals with KOA. The study aimed to assess the validity and reliability of a wearable accelerometer device for measuring APAs older adults with and without KOA. 25 individuals with KOA and 10 healthy individuals underwent evaluation using a wearable commercially available accelerometer (MetamotionC) and a video motion capture system. Reflective markers were placed on the lumbar vertebra and calcaneus. Participants were asked to initiate a step, and the researchers measured the APAlatency and APAamplitude of each subject. APAlatency showed an very large to almost perfect correlation in both groups (CG:r = 0.82; p = 0.003 and KOA r = 0.98; p < 0.00001) between the instruments, while APAamplitude had a moderate to very large correlation (CG: r = 0.65; p = 0.04and KOA: r = 0.80; p < 0.00001). Overall, the measurements showed fair to high reliability for intraclass correlation for video and accelerometer variables. Significant group effect was found for both variables: APAlatency (F1, 66 = 7.3; p = 0.008) and APAamplitude (F1,66 = 9.5; p = 0.00). The wearable tri-axial accelerometer is a valid and reliable for assessing APAs during gait initiation in individuals with KOA, and this population exhibits lower APAs when initiating a step.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2023 Oliveira et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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