Evaluating the reliability and seasonal sensitivity of a fitness-testing battery in elite youth soccer
Article
Asimakidis, N., Beato, M., Bishop, C. and Turner, A. 2025. Evaluating the reliability and seasonal sensitivity of a fitness-testing battery in elite youth soccer. International Journal of Sports Physiology and Performance. https://doi.org/10.1123/ijspp.2025-0055
| Type | Article |
|---|---|
| Title | Evaluating the reliability and seasonal sensitivity of a fitness-testing battery in elite youth soccer |
| Authors | Asimakidis, N., Beato, M., Bishop, C. and Turner, A. |
| Abstract | Purpose: To evaluate the reliability and seasonal sensitivity of a fitness testing battery in elite youth soccer players using two data treatment methods: (a) the best score of multiple trials, and (b) the mean of multiple trials. Methods: Countermovement jump (CMJ), single-leg CMJ (SLCMJ), isometric mid-thigh pull (IMTP), Nordic hamstring strength, 10-m sprint, 505 change of direction (COD), and the Bronco endurance test were assessed in twenty-four elite academy soccer players (age 17.6 ± 1.0 years, height 183.5 ± 8.5 cm, body mass 78.2 ± 8.5 kg) at preseason, midseason, and end of season. Results: The CMJ, Nordic hamstring strength, 10-m sprint, 505 COD, and Bronco tests demonstrated high sensitivity to change (SNR: 1.14 – 3.08), with over 60% of athletes displaying an individual SNR > 1.0. In contrast, SLCMJ and IMTP relative peak force exhibited the lowest reliability and sensitivity (SNR: 0.93 – 1.19), with less than 60% of athletes demonstrating an individual SNR > 1.0, suggesting limited utility for evaluating performance changes. While the mean of multiple trials generally yielded marginally better reliability and sensitivity, both data treatment methods were similar. Conclusions: The majority of the studied fitness tests were reliable and sensitive enough to detect meaningful changes over a season in elite youth soccer players. Practitioners can select either the best trial or mean of trials for data analysis, depending on their context. Overall, these findings illustrate the reliability and seasonal sensitivity of common fitness tests, enabling practitioners to prioritize tests that accurately monitor player performance changes. |
| Keywords | performance testing; measurement characteristics; signal-to-noise ratio; longitudinal study; team sport |
| Sustainable Development Goals | 3 Good health and well-being |
| Middlesex University Theme | Health & Wellbeing |
| Publisher | Human Kinetics |
| Journal | International Journal of Sports Physiology and Performance |
| ISSN | 1555-0265 |
| Electronic | 1555-0273 |
| Publication dates | |
| Online | 24 Jun 2025 |
| Publication process dates | |
| Accepted | 28 Apr 2025 |
| Deposited | 29 Apr 2025 |
| Output status | Published |
| Accepted author manuscript | File Access Level Open |
| Copyright Statement | Accepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance, 2025, https://doi.org/10.1123/ijspp.2025-0055 . © Human Kinetics, Inc. |
| Digital Object Identifier (DOI) | https://doi.org/10.1123/ijspp.2025-0055 |
| Web of Science identifier | WOS:001519145200001 |
| Language | English |
https://repository.mdx.ac.uk/item/23x194
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