COORDINATION VARIABILITY IN OVERGROUND RUNNING AND WALKING AT PREFERRED AND FIXED SPEEDS

Authors

Hannah Wyatt, Auckland University of TechnologyFollow
Carl Jewell, University of Massachusetts AmherstFollow
Gillian Weir, University of Massachusetts AmherstFollow
Richard E.A. Van Emmerik, University of Massachusetts - AmherstFollow
Joseph Hamill, University of Massachusetts - AmherstFollow

Category

Methods / Statistics

Document Type

Paper

Abstract

Coordination variability (CoordV) is impacted by the type and speed of locomotion, however, the appropriate number of trials required for stable outputs during overground locomotion is yet to be determined. The purpose of this study was to analyse the CoordV of lower limb segment and joint couplings to determine the number of trials needed for a stable mean during running and walking at preferred and fixed speeds. Three-dimensional lower-limb kinematics were captured for recreational runners (n = 10) performing 20 trials of each condition. Using a modified vector coding technique, segment and joint couplings were derived, from which, CoordV was calculated using circular statistics. The number of trials required to achieve a mean within 100±10% of a 20 stride mean was determined for each individual. The study findings indicate the need for between 8 and 9 trials to produce a stable mean and contribute to reliable biomechanical outputs.

Recommended Citation

Wyatt, Hannah; Jewell, Carl; Weir, Gillian; Van Emmerik, Richard E.A.; and Hamill, Joseph (2020) "COORDINATION VARIABILITY IN OVERGROUND RUNNING AND WALKING AT PREFERRED AND FIXED SPEEDS," ISBS Proceedings Archive: Vol. 38: Iss. 1, Article 233.
Available at: https://commons.nmu.edu/isbs/vol38/iss1/233