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Stride-time variability is related to sensorimotor cortical activation during forward and backward walking.
Groff, Boman R; Antonellis, Prokopios; Schmid, Kendra K; Knarr, Brian A; Stergiou, Nicholas.
Afiliación
  • Groff BR; Department of Biomechanics and Center for Research in Human Movement Variability, College of Education, University of Nebraska at Omaha, 6160 University Drive South, Omaha, NE, 68182-0860, USA.
  • Antonellis P; Department of Biomechanics and Center for Research in Human Movement Variability, College of Education, University of Nebraska at Omaha, 6160 University Drive South, Omaha, NE, 68182-0860, USA.
  • Schmid KK; Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, 984375 Nebraska Medical Center, Omaha, NE, 68198-4375, USA.
  • Knarr BA; Department of Biomechanics and Center for Research in Human Movement Variability, College of Education, University of Nebraska at Omaha, 6160 University Drive South, Omaha, NE, 68182-0860, USA.
  • Stergiou N; Department of Biomechanics and Center for Research in Human Movement Variability, College of Education, University of Nebraska at Omaha, 6160 University Drive South, Omaha, NE, 68182-0860, USA; Department of Environmental, Agricultural, and Occupational Health, College of Public Health, University o
Neurosci Lett ; 692: 150-158, 2019 01 23.
Article en En | MEDLINE | ID: mdl-30367957
Previous research has used functional near-infrared spectroscopy (fNIRS) to show that motor areas of the cortex are activated more while walking backward compared to walking forward. It is also known that head movement creates motion artifacts in fNIRS data. The aim of this study was to investigate cortical activation during forward and backward walking, while also measuring head movement. We hypothesized that greater activation in motor areas while walking backward would be concurrent with increased head movement. Participants performed forward and backward walking on a treadmill. Participants wore motion capture markers on their head to quantify head movement and pressure sensors on their feet to calculate stride-time. fNIRS was placed over motor areas of the cortex to measure cortical activation. Measurements were compared for forward and backward walking conditions. No significant differences in body movement or head movement were observed between forward and backward walking conditions, suggesting that conditional differences in movement did not influence fNIRS results. Stride-time was significantly shorter during backward walking than during forward walking, but not more variable. There were no differences in activation for motor areas of the cortex when outliers were removed. However, there was a positive correlation between stride-time variability and activation in the primary motor cortex. This positive correlation between motor cortex activation and stride-time variability suggests that forward walking variability may be represented in the primary motor cortex.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caminata / Corteza Sensoriomotora Límite: Adult / Female / Humans / Male Idioma: En Revista: Neurosci Lett Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Irlanda
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caminata / Corteza Sensoriomotora Límite: Adult / Female / Humans / Male Idioma: En Revista: Neurosci Lett Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Irlanda