Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
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©Journal of Sports Science and Medicine ( 2026 )  25 ,  536  -  546   DOI: https://doi.org/10.52082/jssm.2026.536

Research article
A Drone-Based Method to Measure Sprint Force-Velocity Profiles in 30-Meter Sprint Test - A Pilot Study
Fahui Wang1, Christophe Hautier1, Lin Song2, Yong Zhou2, Brice Guignard1, Paul Glaise1, Qingshan Zhang2,1, 
Author Information
1 Université Lyon 1, LIBM, UR 7424, Villeurbanne, France
2 School of Athletic Performance, Shanghai University of Sport, Shanghai, China

Qingshan Zhang
✉ School of Athletic Performance, Shanghai University of Sport, Shanghai, China
Email: zhang.qingshan@hotmail.com
Publish Date
Received: 29-04-2026
Accepted: 31-05-2026
Published (online): 01-06-2026
Narrated in English
 
 
ABSTRACT

The objective was to determine the test-retest reliability and concurrent validity of a drone system in comparison to a radar device. Seventeen male collegiate soccer players participated in two maximal 30-meter sprint runs. The test-retest reliability of the drone system was evaluated using intraclass correlation coefficients (ICC3,1), coefficient of variation (CV%), and standard error of measurement (SEM). Subsequently, the systematic bias and consistency of the two devices on various force-velocity (F-V) variables (e.g., maximal velocity [Vmax], theoretical maximal velocity [V0], theoretical maximal horizontal force [F0], the slope of the F-V relationship [SFV]) were evaluated using linear mixed model (LMM) and Bland-Altman analysis. The drone system demonstrated moderate to excellent test-retest reliability across all variables (0.59 ≤ ICC ≤ 0.95; CV% < 10%). While LMM analysis detected significant systematic differences for Vmax (p = 0.013) and V0 (p = 0.012), Bland-Altman analysis confirmed high practical agreement with minimal bias (≤ 1.12%) and narrow limits of agreement (LoA < 10%). Pmax, split times (T5m–T20m) and average accelerations (A10m–A20m) demonstrated greater consistency (%Bias ≤ 0.76%) with no significant systematic bias (p > 0.05). Conversely, early-acceleration and model-derived metrics (Tau, Amax, F0, SFV) exhibited significant bias (p ≤ 0.028) and wide LoA exceeding 10% (e.g., F0: -13.37% to 8.56%; SFV: -11.54% to 18.18%). In conclusion, although the drone system exhibits high monitoring value in the maximum speed phase, early-acceleration metrics (Amax, F0, and T5m) should be interpreted with caution for individual-level monitoring. The tracking instability during the early acceleration phase necessitates further algorithm optimization.

Key words: Computer vision, acceleration, performance, reliability


           Key Points
  • The study evaluated a consumer-grade drone system for sprint force-velocity profiling against a radar using multi-faceted statistical analyses (ICC, CV%, SEM, LMM, Bland-Altman).
  • The drone system demonstrated moderate-to-excellent reliability (ICC: 0.59–0.95) and high practical agreement in the maximum speed phase (bias ≤ 1.12%; LoA < 10%), but exhibited significant systematic bias during the initial acceleration phase.
  • While suitable for group-level monitoring of maximum velocity metrics, the identified early-phase tracking instability provides clear targets for algorithm optimization in future drone-based sports technology applications.
 
 
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