Effect of fatigability on sprint time performance and force-velocity profile according to maturity status in young rugby players

Paul Galantine, Anthony Sudlow, Arnaud Hays, Freddy Maso, Pascale Duché and Denis Bertin

PLOS ONE, 2025, vol. 20, issue 1, 1-15

Abstract: Little is known about the influence of fatigue in repeated overground sprinting on force-velocity properties in children and adolescents, while this ability to repeat sprints is important for future progress in rugby union. Sprint time decline is commonly used to assess fatigability. However, it does not provide data on biomechanical aspects of sprint performance such as maximal power, force, and velocity production. As sprint time performance and force-velocity properties do not linearly change during adolescence, considering maturity status is important. This study aimed to assess the effect of fatigue on sprint time performance fatigability, force-velocity parameters, and mechanical effectiveness according to maturity status. A group of fifteen boys (12.5 ± 0.5 years) children and a group of seventeen boys (15.1 ± 0.6 years) adolescent rugby players completed seven blocks, consisting of a 30-meter sprint followed by five minutes of high-intensity exercise with one minute of passive recovery. The force-velocity parameters were calculated at each sprint, and performance decrement was assessed using a fatigue index. A main effect of block repetition was found for maximal power output, maximal force, maximal velocity, 30-meter sprint time, fatigue index and mechanical effectiveness parameters with large effect sizes (p

Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0316947

DOI: 10.1371/journal.pone.0316947

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