University of Worcester Worcester Research and Publications

Short-Term Speed Variability as an Index of Pacing Stochasticity in Athletic Running Events

Boullosa, D, Patrocinio, E, Renfree, Andrew ORCID:, Casado, A, Hanley, B and Foster, C (2023) Short-Term Speed Variability as an Index of Pacing Stochasticity in Athletic Running Events. Journal of Functional Morphology and Kinesiology, 8 (2). p. 86. ISSN 2411-5142

jfmk-08-00086.pdf - Published Version
Available under License Creative Commons Attribution.

Download (525kB) | Preview


We aimed to compare differences in performance and pacing variability indices between 5000 m heats and finals during major championships in men and women. Data with 100 m time resolution were used to compare overall pacing variability (standard deviation of 100 m section times, SD; and coefficient of variation, CV%) and short-term pacing variability (root mean square of successive differences between 100 m section times, RMSSD). The changes in performance and pacing indices differed between races and competitions. For instance, the men’s final in Beijing 2008 was quicker than the heat (p < 0.01) while the CV% was reduced (p = 0.03) and RMSSD increased (p < 0.01). For women, the heats and the final exhibited a similar mean time in London 2017 (p = 0.33) but with CV% (p < 0.001) and RMSSD (p < 0.001) showing opposite trends. Individual analyses of men’s and women’s champions revealed highly individual variability metrics. The use of RMSSD can complement overall variability indices for better characterization of pacing stochasticity.

Item Type: Article
Additional Information:

This article belongs to the Special Issue Exercise Evaluation and Prescription—4th Edition.

© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (

Uncontrolled Discrete Keywords: aerobic endurance, aerobic performance, endurance running, athletics
Subjects: Q Science > QP Physiology
Divisions: College of Business, Psychology and Sport > School of Sport and Exercise Science
Related URLs:
Copyright Info: Open Access article
Depositing User: Andrew Renfree
Date Deposited: 20 Jun 2023 10:51
Last Modified: 20 Jun 2023 10:51

Actions (login required)

View Item View Item
Worcester Research and Publications is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.