Artificially long legs directly enhance long sprint running performance

Author:

Weyand Peter G.1ORCID,Brooks Lance C.1,Prajapati Sunil1,McClelland Emily L.1,Hatcher S. K.1,Callier Quinn M.1,Bundle Matthew W.2ORCID

Affiliation:

1. Locomotor Performance Laboratory, Department of Applied Physiology and Wellness, Southern Methodist University, Dallas, TX, USA

2. Biomechanics Laboratory, School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA

Abstract

This comment addresses the incomplete presentation and incorrect conclusion offered in the recent manuscript of Beck et al . ( R. Soc. Open Sci. 9 , 211799 ( doi:10.1098/rsos.211799 )). The manuscript introduces biomechanical and performance data on the fastest-ever, bilateral amputee 400 m runner. Using an advantage standard of not faster than the fastest non-amputee runner ever (i.e. performance superior to that of the intact-limb world record-holder), the Beck et al . manuscript concludes that sprint running performance on bilateral, lower-limb prostheses is not unequivocally advantageous compared to the biological limb condition. The manuscript acknowledges the long-standing support of the authors for the numerous eligibility applications of the bilateral-amputee athlete. However, it does not acknowledge that the athlete's anatomically disproportionate prosthetic limb lengths (+15 cm versus the World Para Athletics maximum) are ineligible in both Olympic and Paralympic track competition due to their performance-enhancing properties. Also not acknowledged are the slower sprint performances of the bilateral-amputee athlete on limbs of shorter length that directly refute their manuscript's primary conclusion. Our contribution here provides essential background information and data not included in the Beck et al. manuscript that make the correct empirical conclusion clear: artificially long legs artificially enhance long sprint running performance.

Publisher

The Royal Society

Subject

Multidisciplinary

Reference22 articles.

1. Sprinting with prosthetic versus biological legs: insight from experimental data

2. Grace D Chapado R Kibet J Nico C Riccardi A. 2021 World Athletics Mechanical Aids Review Panel In the Matter of an Application by Blake Leeper . See https://www.worldathletics.org/download/download?filename=3a466903-081c-4f64-95d2-b4d6512c0730.pdf&urlslug=Decision.

3. The fastest runner on artificial legs: different limbs, similar function?

4. Point: Artificial limbs do make artificially fast running speeds possible

5. Pistorius v. IAAF. 2008 Vol CAS 2008/A/1480 (Court of Arbitration for Sport). See https://jurisprudence.tas-cas.org/Shared%20Documents/1480.pdf.

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