Correlation between plantarflexor moment arm and preferred gait velocity in slower elderly men

Journal of Biomechanics
Sabrina S M Lee, Stephen J Piazza

Abstract

In this study, the relationship between musculoskeletal architecture of the lateral gastrocnemius muscle and gait velocity in elderly individuals was investigated using ultrasonography and standardized tests of physical performance in 20 older adult males. Musculoskeletal architecture parameters included moment arm, fascicle length, pennation angle, and muscle thickness. The Six Minute Walk Test (6MIN) and Four Metre Walk Velocity Test (4METRE) were used to determine preferred and maximum gait velocity, respectively. Only weak correlations were found for all 20 subjects taken together. After subjects were separated into faster and slower subgroups by preferred velocity using cluster analysis; however, a strong correlation was found between plantarflexion moment arm and 6MIN velocity in the slower group (R(2)=0.669, p=0.004). Examination of subgroup differences revealed that the slow subgroup was significantly older than the fast subgroup (p=0.034), and had average body mass (p=0.021) and body mass index (p=0.011) that were significantly greater. The strength of the correlation between plantarflexion moment arm and 6MIN velocity found for slower subjects is much greater than those previously reported for correlations between ank...Continue Reading

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Nov 3, 2009·The Journal of Experimental Biology·Sabrina S M Lee, Stephen J Piazza
Apr 9, 2011·Gait & Posture·Kiros KaramanidisGert-Peter Brüggemann

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Citations

Dec 3, 2014·Foot and Ankle Clinics·Cyrille Cazeau, Yves Stiglitz
Jul 28, 2016·Computer Methods in Biomechanics and Biomedical Engineering·Kristen RasskeJason R Franz
Dec 29, 2013·Journal of Applied Physiology·Josh R Baxter, Stephen J Piazza
Nov 23, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Francesca E WadeStephen J Piazza

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