Article

Conventional gait labs are limited in their ability to study running gait due to
their size. There is no consensus in the literature regarding the ability to
extrapolate results for adult treadmill running to overground. This comparison
has not been studied in children. Twenty-four healthy children (mean age 11.7)
ran overground at a slow running speed while motion capture, ground reaction
force, and surface electromyography (EMG) data were obtained. The same data were
then collected while participants ran for 6min on an instrumented treadmill at a
speed similar to their overground speed. The kinematic, kinetic, and EMG data for
overground and treadmill running were compared. Sagittal plane kinematics
demonstrated similar hip and knee waveforms with the exception of more knee
extension just before toe off. Ankle kinematic waveforms were similar during
stance phase but treadmill running demonstrated decreased dorsiflexion during
swing. Kinetic data was significantly different between the two conditions with
treadmill running having a more anterior ground reaction force compared to
overground. Due to the numerous differences between overground and treadmill gait
demonstrated in this study, it is felt that the use of an instrumented treadmill
is not a surrogate to the study of overground running in a pediatric population.
This data set will function as a normative data set against which future
treadmill studies can be compared.
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Langue : ANGLAIS