Mechanisms contributing to gait speed and metabolic cost in children with unilateral cerebral palsy

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dc.creatorTatiana Pessoa Silva Pinto
dc.creatorSérgio Teixeira da Fonseca
dc.creatorRejane Vale Gonçalves
dc.creatorThales Rezende de Souza
dc.creatorDaniela Virgínia Vaz
dc.creatorPaula Lanna Pereira Silva
dc.creatorMarisa Cotta Mancini
dc.date.accessioned2022-11-25T17:46:45Z
dc.date.accessioned2025-09-09T00:35:47Z
dc.date.available2022-11-25T17:46:45Z
dc.date.issued2018-01
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.identifier.doihttps://doi.org/10.1016/j.bjpt.2017.06.015
dc.identifier.issn1413-3555
dc.identifier.urihttps://hdl.handle.net/1843/47458
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBrazilian Journal of Physical Therapy
dc.rightsAcesso Restrito
dc.subjectParalisia cerebral
dc.subjectCapacidade motora
dc.subjectMarcha
dc.subjectMobilidade humana
dc.subject.otherCerebral palsy
dc.subject.otherMotor control
dc.subject.otherGait
dc.subject.otherMobility
dc.subject.otherEnergy conserving mechanisms
dc.subject.otherEnergy generating mechanisms
dc.titleMechanisms contributing to gait speed and metabolic cost in children with unilateral cerebral palsy
dc.typeArtigo de periódico
local.citation.epage48
local.citation.issue1
local.citation.spage42
local.citation.volume22
local.description.resumoBackground: Gait speed and metabolic cost are indicators of functional capacity in children with cerebral palsy. Uncovering their mechanisms helps guide therapeutic actions. Objectives: To investigate the contributions of energy-generating and energy-conserving mechanisms to gait speed and metabolic cost of children with unilateral cerebral palsy. Methods: Data on eccentric and concentric muscle work, co-contraction, elastic torque and vertical stiffness of the affected-limb, forcing torque of the non-affected limb, gait speed and metabolic cost were collected from 14 children with unilateral cerebral palsy, aged 6–12 years. Analyses included two groups of multiple regression models. The first group of models tested the association between each dependent variable (i.e., speed and metabolic cost) and the independent variables that met the input criteria. The second group verified the contribution of the non-selected biomechanical variables on the predictors of the first model. Results: Gait speed (R2 = 0.80) was predicted by elastic torque (β = 0.62; 95%CI: 0.60, 0.63), vertical stiffness (β = −0.477; 95%CI: −0.479, −0.474) and knee co-contraction (β = 0.27; 95%CI: −1.96, 2.49). The production of eccentric work by the affected limb proved relevant in adjusting the vertical stiffness (R2 = 0.42; β = −0.64; 95%CI: 0.86, −0.42); elastic torque of the affected-leg was associated with impulsive torque of the non-affected leg (R2 = 0.31; β = 0.55; 95%CI: 0.46, 0.64). Metabolic cost of gait (R2 = 0.48) was partially predicted by knee co-contraction (β = 0.69; 95%CI: 0.685, 0.694). Conclusions: The chain of associations revealed by the two steps models helped uncover the mechanisms involved in the locomotion of children with unilateral cerebral palsy. Intervention that changes specific energy conserving and generating mechanisms may improve gait of these children.
local.identifier.orcidhttps://orcid.org/0000-0002-2979-8744
local.identifier.orcidhttps://orcid.org/0000-0002-3455-5405
local.identifier.orcidhttps://orcid.org/0000-0001-8081-1687
local.identifier.orcidhttp://orcid.org/0000-0003-0470-6361
local.identifier.orcidhttp://orcid.org/0000-0002-7415-5043
local.publisher.countryBrasil
local.publisher.departmentEEF - DEPARTAMENTO DE FISIOTERAPIA
local.publisher.departmentEEF - DEPARTAMENTO DE TERAPIA OCUPACIONAL
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S141335551730254X?via%3Dihub

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