Validity of global positioning system technology to measure maximum velocity sprinting in elite sprinters

Document Type

Journal Article

Publication Title

Journal of Strength and Conditioning Research

Volume

37

Issue

12

First Page

2438

Last Page

2442

PubMed ID

38015733

Publisher

National Strength and Conditioning Association / Wolters Kluwer

School

School of Medical and Health Sciences / Centre for Human Performance

RAS ID

64749

Funders

Edith Cowan University / ALTIS

Comments

Thomas, M., Thorpe, R. T., Jordan, M. J., & Nimphius, S. (2023). Validity of global positioning system technology to measure maximum velocity sprinting in elite sprinters. Journal of Strength and Conditioning Research, 37(12), 2438-2442. https://doi.org/10.1519/JSC.0000000000004567

Abstract

Thome, M, Thorpe, RT, Jordan, MJ, and Nimphius, S. Validity of global positioning system (GPS) technology to measure maximum velocity sprinting in elite sprinters. J Strength Cond Res 37(12): 2438-2442, 2023 - The objective of this study was to assess the concurrent validity of 10-Hz wearable Global Positioning System (GPS) technology to measure maximum velocity sprinting (Vmax) relative to Doppler radar in elite sprinters. Data were collected from a single training session performed by elite 100 and 200 m sprinters (males: n = 5; 100 m best times: 10.02 ± 0.07 seconds, range: 9.94-10.10 seconds; 200 m best times: 20.29 ± 0.42 seconds, range: 19.85-20.80 seconds; females: n = 2; age: 28.0 ± 4.2 years; body mass: 65.8 ± 4.6 kg; 100 m best times: 11.18 ± 0.34 seconds; 200 m best times: 22.53 ± 0.04 seconds). Velocity and time data from 16 maximal, 60-m sprint efforts were recorded simultaneously with 10 Hz GPS and 47 Hz radar. Validity was assessed using Bland-Altman 95% limits of agreement (LOA) and intraclass correlation coefficient (ICC), each with respective 95% confidence intervals (CI). Vmaxmeasured with 10 Hz GPS demonstrated a LOA of -0.11 m·s-1(-0.17, -0.05) and an ICC of 0.99 (0.98, 1.0) relative to the radar device.10 Hz GPS overestimated Vmaxby 0.11 m·s-1relative to the radar but could still be considered a suitable tool for monitoring external load in elite sprinters. However, the much smaller average annual improvement in this population (∼0.1-0.2%) in comparison with the ∼1% overestimation reduces the utility of 10 Hz GPS to detect meaningful performance changes in maximum velocity.

DOI

10.1519/JSC.0000000000004567

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