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Research Article

The immediate effect of treadmill walking on step variability in boys with a history of severe traumatic brain injury and typically-developed controls

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Pages 170-174 | Received 11 Oct 2009, Accepted 25 Nov 2009, Published online: 10 May 2010
 

Abstract

Objective: To examine the immediate effect of treadmill walking (i.e. enforced walking at a fixed gait velocity) on gait variability among children post-severe traumatic brain injury (TBI) and typically-developing (TD) age-matched controls.

Methods: Twelve boys post-severe TBI and 18 TD boys participated in this study. Ages were 7–13 years. Step time and length variability were assessed by an electronic walkway prior to and after treadmill walking for 6 minutes.

Results: Significantly reduced walking velocity and step length, with significantly increased step length variability were noted among children post-TBI compared to the TD subjects when walking on level ground prior to the treadmill. Treadmill walking reduced step length variability in TD children, while there was a slight increase in variability in children post-TBI (p < 0.05).

Conclusion: Walking on a treadmill at a fixed gait velocity has a different effect on boys post-severe TBI and TD controls.

Objetivo: Valorar el efecto inmediato de caminar en una banda sin fin (es decir, caminar a una velocidad de marcha constante) sobre la variabilidad de la marcha entre niños post-traumatismo cráneo-encefálico (TBI) severo y controles pareados por edad con desarrollo típico (TD).

Métodos: Doce niños post-TBI y 18 niños TD participaron en este estudio. Las edades estaban comprendidas entre los 7 y 13 años. Se determinaron el tiempo de paso y la variabilidad de longitud utilizando una matriz electrónica antes y después de caminar 6 minutos en una banda sin fin.

Resultados: Se notó una importante disminución de la velocidad de la marcha y de longitud de paso, con aumento significativo de la variabilidad de la longitud de paso entre los niños post-TBI en comparación con los sujetos TD cuando caminan sobre terreno regular previo a la banda sin fin. La marcha en la banda sin fin redujo la variabilidad de longitud de paso en los niños TD, mientras que hubo un ligero aumento en la variabilidad en los niños post-TBI (p < 0.05).

Conclusión: Caminar en una banda sin fin a una velocidad de la marcha constante tiene diferentes efectos en niños post-TBI y en los controles TD.

Palabras clave: marcha, traumatismo cráneo-encefálico, variabilidad de paso, banda sin fin

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