Surface effects on dynamic stability and loading during outdoor running using wireless trunk accelerometry

Surface effects on dynamic stability and loading during outdoor running using wireless trunk accelerometry

Despite frequently declared benefits of using wireless accelerometers to assess running gait in real-world settings, available research is limited. The purpose of this study was to investigate outdoor surface effects on dynamic stability and dynamic loading during running using tri-axial trunk accel...

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Veröffentlicht in:Gait & Posture 2016-07, Vol.48, p.220-225
Hauptverfasser: Schütte, Kurt, Aeles, Jeroen, Op De Beéck, Tim, van der Zwaard, Babette C, Venter, Rachel, Vanwanseele, Benedicte
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container_start_page 220
container_title Gait & Posture
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creator Schütte, Kurt
Aeles, Jeroen
Op De Beéck, Tim
van der Zwaard, Babette C
Venter, Rachel
Vanwanseele, Benedicte
description Despite frequently declared benefits of using wireless accelerometers to assess running gait in real-world settings, available research is limited. The purpose of this study was to investigate outdoor surface effects on dynamic stability and dynamic loading during running using tri-axial trunk accelerometry. Twenty eight runners (11 highly-trained, 17 recreational) performed outdoor running on three outdoor training surfaces (concrete road, synthetic track and woodchip trail) at self-selected comfortable running speeds. Dynamic postural stability (tri-axial acceleration root mean square (RMS) ratio, step and stride regularity, sample entropy), dynamic loading (impact and breaking peak amplitudes and median frequencies), as well as spatio-temporal running gait measures (step frequency, stance time) were derived from trunk accelerations sampled at 1024Hz. Results from generalized estimating equations (GEE) analysis showed that compared to concrete road, woodchip trail had several significant effects on dynamic stability (higher AP ratio of acceleration RMS, lower ML inter-step and inter-stride regularity), on dynamic loading (downward shift in vertical and AP median frequency), and reduced step frequency (p
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Results from generalized estimating equations (GEE) analysis showed that compared to concrete road, woodchip trail had several significant effects on dynamic stability (higher AP ratio of acceleration RMS, lower ML inter-step and inter-stride regularity), on dynamic loading (downward shift in vertical and AP median frequency), and reduced step frequency (p&lt;0.05). Surface effects were unaffected when both running level and running speed were added as potential confounders. Results suggest that woodchip trails disrupt aspects of dynamic stability and loading that are detectable using a single trunk accelerometer. 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title Surface effects on dynamic stability and loading during outdoor running using wireless trunk accelerometry
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