Research Repository

Variable long-term developmental trajectories of short sprint speed and jumping height in English Premier League academy soccer players: an applied case study

Moran, Jason and Paxton, Kevin and Jones, Benjamin and Granacher, Urs and Sandercock, Gavin and Hope, Edward and Ramirez-Campillo, Rodrigo (2020) 'Variable long-term developmental trajectories of short sprint speed and jumping height in English Premier League academy soccer players: an applied case study.' Journal of Sports Sciences. ISSN 0264-0414

[img] Text
Manuscript (author details).pdf - Accepted Version
Restricted to Repository staff only until 29 July 2021.

Download (130kB) | Request a copy

Abstract

Growth and maturation can affect physical performance over the long term, making the appraisal of athletic ability difficult. Using a previously published method, we sought to longitudinally track youth soccer players to assess the developmental trajectory of athletic performance over a six-year period in an English Premier League academy. Age-specific z-scores were calculated for sprint and jump performance from a sample of male youth soccer players (n = 140). A case study approach was used to analyse the longitudinal curves of the six players with the longest tenure. A regression equation for each fitness variable facilitated comparison of participants to the wider sample. The trajectories of the sprint times of players 1 and 3 were characterised by a marked difference in respective performance levels up until peak height velocity (PHV) when player 1 achieved a substantial increase in sprint speed and player 3 experienced a large decrease. Player 5 was consistently a better performer than player 2 until PHV when the sprint and jump performance of the former markedly decreased and he was overtaken by the latter. Fluctuations in players’ physical performance can occur quickly and in drastic fashion. Coaches must be aware that suppressed, or inflated, performance could be temporary and selection and deselection decisions should not be made based on information gathered over a short time period.

Item Type: Article
Divisions: Faculty of Science and Health > Sport, Rehabilitation and Exercise Sciences, School of
Depositing User: Elements
Date Deposited: 18 Aug 2020 14:51
Last Modified: 18 Aug 2020 14:51
URI: http://repository.essex.ac.uk/id/eprint/28001

Actions (login required)

View Item View Item