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Effects of additional load at different heights on gait initiation: A statistical parametric mapping of center of pressure and center of mass behavior.
Vieira, Marcus Fraga; Rodrigues, Fábio Barbosa; de Oliveira Assis, Alfredo; de Mendonça Mesquita, Eduardo; Lemes, Thiago Santana; De Villa, Guilherme Augusto Gomes; Baptista, Rafael Reimann; de Oliveira Andrade, Adriano; Lobo da Costa, Paula Hentschel.
Afiliação
  • Vieira MF; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • Rodrigues FB; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • de Oliveira Assis A; State University of Goiás - Unidade Trindade-GO, Brazil.
  • de Mendonça Mesquita E; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • Lemes TS; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • De Villa GAG; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • Baptista RR; Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Goiás, Brazil.
  • de Oliveira Andrade A; Pontifical Catholic University Rio Grande do Sul, Porto Alegre, Brazil.
  • Lobo da Costa PH; Centre for Innovation and Technology Assessment in Health (NIATS), Federal University of Uberlândia, Uberlândia, Brazil.
PLoS One ; 16(6): e0242892, 2021.
Article em En | MEDLINE | ID: mdl-34115751
The purpose of this study was to investigate the effects of different vertical positions of an asymmetrical load on the anticipatory postural adjustments phase of gait initiation. Sixty-eight college students (32 males, 36 females; age: 23.65 ± 3.21 years old; weight: 69.98 ± 8.15 kg; height: 1.74 ± 0.08 m) were enrolled in the study. Ground reaction forces and moments were collected using two force platforms. The participants completed three trials under each of the following random conditions: no-load (NL), waist uniformly distributed load (WUD), shoulder uniformly distributed load (SUD), waist stance foot load (WST), shoulder stance foot load (SST), waist swing foot load (WSW), and shoulder swing foot load (SSW). The paired Hotelling's T-square test was used to compare the experimental conditions. The center of pressure (COP) time series were significantly different for the SUD vs. NL, SST vs. NL, WST vs. NL, and WSW vs. NL comparisons. Significant differences in COP time series were observed for all comparisons between waist vs. shoulder conditions. Overall, these differences were greater when the load was positioned at the shoulders. For the center of mass (COM) time series, significant differences were found for the WUD vs. NL and WSW vs. NL conditions. However, no differences were observed with the load positioned at the shoulders. In conclusion, only asymmetrical loading at the waist produced significant differences, and the higher the extra load, the greater the effects on COP behavior. By contrast, only minor changes were observed in COM behavior, suggesting that the changes in COP (the controller) behavior are adjustments to maintain the COM (controlled object) unaltered.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Pressão / Estatística como Assunto / Marcha Limite: Adult / Female / Humans / Male Idioma: En Revista: PLoS One Assunto da revista: CIENCIA / MEDICINA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Pressão / Estatística como Assunto / Marcha Limite: Adult / Female / Humans / Male Idioma: En Revista: PLoS One Assunto da revista: CIENCIA / MEDICINA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos