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This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical.

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Presentation on theme: "This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical."— Presentation transcript:

1 This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation. J Rehabil Res Dev. 2013;50(10):1435–48. http://dx.doi.org/10.1682/JRRD.2012.10.0199 Slideshow Project DOI:10.1682/JRRD.2012.10.0199JSP Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation Marlene Schoeman, PhD; Ceri E. Diss, PhD; Siobhan C. Strike, PhD

2 This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation. J Rehabil Res Dev. 2013;50(10):1435–48. http://dx.doi.org/10.1682/JRRD.2012.10.0199 Slideshow Project DOI:10.1682/JRRD.2012.10.0199JSP Aim – Assess loading symmetry during vertical jump landings to determine role of intact and prosthetic limbs in controlling downward momentum of center of mass during landing. Relevance – People with transtibial amputation (TTA) are encouraged to engage in recreation sports for health and mechanical benefits. – Most recreational sports involve jumping.

3 This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation. J Rehabil Res Dev. 2013;50(10):1435–48. http://dx.doi.org/10.1682/JRRD.2012.10.0199 Slideshow Project DOI:10.1682/JRRD.2012.10.0199JSP Method Participants – 6 with unilateral TTA and 10 nondisabled. – Completed 10 maximal vertical jumps. Assessment – Contralateral symmetry (Symmetry Index). – Symmetry at group level (Mann-Whitney U Test).

4 This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation. J Rehabil Res Dev. 2013;50(10):1435–48. http://dx.doi.org/10.1682/JRRD.2012.10.0199 Slideshow Project DOI:10.1682/JRRD.2012.10.0199JSP Results Participants with TTA demonstrated: – Quasi-unilateral landings onto intact limb. Due to either incapability of prosthetic ankle to plantar flex or increased residual-limb knee and hip flexion. – In loading phase, reduced prosthetic-side peak vertical forces, ankle range of motion, extensor moments, and negative work generated. Individual asymmetries evident in: – Peak vertical force magnitudes, duration from touchdown to peak vertical force, ankle joint angles at touchdown, ranges of motion, knee and hip extensor moments, and work done at ankle.

5 This article and any supplementary material should be cited as follows: Schoeman M, Diss CE, Strike SC. Asymmetrical loading demands associated with vertical jump landings in people with unilateral transtibial amputation. J Rehabil Res Dev. 2013;50(10):1435–48. http://dx.doi.org/10.1682/JRRD.2012.10.0199 Slideshow Project DOI:10.1682/JRRD.2012.10.0199JSP Conclusion For people with TTA, there is a potential injury risk associated with landing. – Indicated by their high peak forces from significantly lower landing heights than nondisabled participants.

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