Pooling sexes when assessing ground reaction forces during walking: Statistical Parametric Mapping versus traditional approach

Castro, Marcelo Peduzzi de; Pataky, Todd C.; Sole, Gisela; Vilas-Boas, João Paulo

doi:10.1016/j.jbiomech.2015.05.027

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The latter is undoubtedly useful in walking, when potential energy (dependent on the vertical BCoM position) and kinetic energy (mostly dependent on the anteroposterior BCoM velocity) exchange in a pendulum-like manner 2 , which makes the axial trajectories dependent on each other. Thus, SPM Hotelling’s T 2 test is suitable when the tested hypothesis pertains the whole trajectory, and may be followed by post-hoc SPM-t-tests on axial components 40 . As the 3D BCoM trajectory during ambulation constitutes a “locomotor signature” for humans and terrestrial animals 4 and varies at different speeds, gaits, physiological and pathological conditions 4 , 8 , 11 – 14 , 27 , 41 , a comprehensive test on its shape can be a specific and/or sensitive marker of disease progression, recovery or response to therapy.…”

Section: Discussionmentioning

confidence: 99%

Comparison of three-dimensional body centre of mass trajectories during locomotion through zero- and one-dimensional statistics

Luciano

Ruggiero²,

Minetti³

et al. 2022

Sci Rep

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The trajectory of the body centre of mass (BCoM) during locomotion differs through speeds, gaits and pathological states; statistical methods are needed to compare it among different conditions. Here, ten participants walked on treadmill at 1.1 and 1.4 m/s; BCoM trajectories were obtained through stereophotogrammetry and expressed as Fourier series. Trajectories were compared among speeds using (i) zero-dimensional (0D) linear and circular tests for difference on amplitudes and phases of Fourier series harmonic, (ii) one-dimensional statistical parametric mapping (1D-SPM) t-tests on the anteroposterior, mediolateral and vertical axial components of the BCoM trajectory and (iii) 1D-SPM Hotelling’s T2 test on the three-dimensional BCoM trajectory. Increasing speed increased the amplitude and decreased the phase of the fundamental (2nd) vertical harmonic. Coherently, the BCoM vertical trajectory featured greater displacement and a forward-shift, combined with greater displacement along the anteroposterior axis. Hotelling’s T2 1D-SPM on the whole trajectory featured supra-threshold clusters at the transition between double and single support, and mid of the single support. 0D and 1D test yielded coherent and complementary results: 1D-SPM Hotelling’s T2 is suitable to compare whole three-dimensional BCoM trajectories; however, when researchers hypothesize that conditions may impact specific harmonics or axial components, 0D or 1D-SPM t-tests are recommended.

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Section: Discussionmentioning

confidence: 99%

Comparison of three-dimensional body centre of mass trajectories during locomotion through zero- and one-dimensional statistics

Luciano

Ruggiero²,

Minetti³

et al. 2022

Sci Rep

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“…With the data averaged together, the left and right pairing have di↵erences in the magnitude of ences occur between female and male averages, but these are still on a small scale of %BW . Previous research has found peaks ine↵ective at determining significant di↵erences between sexes, instead suggesting waveforms are compared with statistical parametric mapping [280].…”

Section: Symmetry Metricsmentioning

confidence: 95%

Computational Tools and Experimental Methods for the Development of Passive Prosthetic Feet

Morgan¹

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Modern prosthetic foot designs are incredibly diverse in comparison to what was o↵ered to amputees at the turn of the millennium. Powered ankles can supply natural levels of joint torque, whilst passive feet continue to optimise for kinematic goals. However, most passive feet still do not solve the issue of unhealthy loads, and an argument can be made that optimisation methods have neglected the less active and elderly amputee. This thesis creates a framework for a novel approach to prosthetic foot optimisation by focusing on the transitionary motor tasks of gait initiation and termination.An advanced FEA model has been created in ANSYS® using boundary con-ditions derived from an ISO testing standard that replicates stance phase loading. This model can output standard results found in the literature and goes beyond by parameterising the roll-over shape within the software using custom APDL code. Extensive contact exploration and an experimental study have ensured the robustness of the model. Subject force and kinematic data can be used for speciﬁc boundary conditions, which would allow for easy adaptation to the transitionary motor tasks.This FEA model has been used in the development of prosthetic experiment tool, which can exchange helical springs to assess e↵ects of small changes in sti↵-ness on gait metrics. A rigorous design methodology was employed for all compo-nents, including parametric design studies, response surface optimisation, and ISO level calculations. The design has been manufactured into a working prototype and is ready for clinical trials to determine its eﬃcacy.The conclusion of this framework is in the development of an experimental method to collect subject data for use in the models. A pilot study uncovered reliable protocols, which were then veriﬁed with ANOVA statistics. Proportional ratios were deﬁned as additions to metric peak analyses already found in the liter-ature. These tools are ready for deployment in full clinical trials with amputees, so that a new prosthetic optimisation pathway can be discovered for the beneﬁt of less active or elderly amputees.

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Ground Reaction Forces During Walking of Transtibial Amputees Using Statistical Parametric Mapping

Dure,

Riveras,

Muñoz-Larrosa

et al. 2024

IFMBE Proceedings

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Pooling sexes when assessing ground reaction forces during walking: Statistical Parametric Mapping versus traditional approach

Cited by 5 publications

References 25 publications

Comparison of three-dimensional body centre of mass trajectories during locomotion through zero- and one-dimensional statistics

Comparison of three-dimensional body centre of mass trajectories during locomotion through zero- and one-dimensional statistics

Computational Tools and Experimental Methods for the Development of Passive Prosthetic Feet

Ground Reaction Forces During Walking of Transtibial Amputees Using Statistical Parametric Mapping

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