{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T19:57:55Z","timestamp":1770062275802,"version":"3.49.0"},"reference-count":60,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,5,12]],"date-time":"2025-05-12T00:00:00Z","timestamp":1747008000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>Background: A comprehensive understanding of variations in physical attributes both between and within young players is crucial for accurately identifying talent based on physical performance. This study aimed to compare maximum strength, jump, and sprint test results among young soccer players from different age categories and playing positions. Secondarily, this study aimed to analyze the association between maximum strength, jump, and sprint performances. Methods: A total of 103 players were categorized as U23, U19, U17, and U16. The players were placed into these age categories based on their football abilities. All participants completed standardized warm-ups, and testing procedures followed protocols established in previous studies. Results: Significant differences were found between age categories regarding the Isometric Mid-Thigh Pull (p &lt; 0.001; \u03b72p = 0.33), Countermovement Jump (CMJ) (p &lt; 0.001; \u03b72p = 0.50), Squat Jump (SJ) (p &lt; 0.001; \u03b72p = 0.29), and sprint (p &lt; 0.001; \u03b72p = 0.30) tests. No significant differences were detected in Broad Jump results between age categories. Moreover, no significant differences were observed in any physical capacities between playing positions. Furthermore, significant moderate-to-strong correlations (r = 0.30\u20130.86) were observed between all physical tests. Conclusions: Age categories can distinguish soccer players\u2019 performance in different physical tests while no differences were observed between playing positions. Similar magnitude correlations were observed across all tests with only the CMJ and SJ being strongly correlated. Coaches and strength and conditioning professionals should apply a variety of tests to assess different physical qualities since they have different patterns between age categories.<\/jats:p>","DOI":"10.3390\/app15105414","type":"journal-article","created":{"date-parts":[[2025,5,12]],"date-time":"2025-05-12T12:18:06Z","timestamp":1747052286000},"page":"5414","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Profiling of Physical Qualities of Highly Trained Portuguese Youth Soccer Players"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-3749-0701","authenticated-orcid":false,"given":"Miguel","family":"Silva","sequence":"first","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia (UMaia), 4475-690 Maia, Portugal"},{"name":"Department of Rehabilitation and Optimization of Performance (DROP), Futebol Clube Famalic\u00e3o-Futebol SAD, 4760-482 Famalic\u00e3o, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-3451-3079","authenticated-orcid":false,"given":"Hugo Duarte","family":"Antunes","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation and Optimization of Performance (DROP), Futebol Clube Famalic\u00e3o-Futebol SAD, 4760-482 Famalic\u00e3o, Portugal"},{"name":"CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1495-751 Cruz Quebrada Dafundo, Portugal"}]},{"given":"Ana","family":"Sousa","sequence":"additional","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia (UMaia), 4475-690 Maia, Portugal"}]},{"given":"F\u00e1bio Yuzo","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia (UMaia), 4475-690 Maia, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6522-7594","authenticated-orcid":false,"given":"Ant\u00f3nio Rodrigues","family":"Sampaio","sequence":"additional","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia (UMaia), 4475-690 Maia, Portugal"},{"name":"Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Cast\u00ealo da Maia, 4475-690 Maia, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0134-5038","authenticated-orcid":false,"given":"Ricardo","family":"Pimenta","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation and Optimization of Performance (DROP), Futebol Clube Famalic\u00e3o-Futebol SAD, 4760-482 Famalic\u00e3o, Portugal"},{"name":"CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1495-751 Cruz Quebrada Dafundo, Portugal"},{"name":"Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Cast\u00ealo da Maia, 4475-690 Maia, Portugal"},{"name":"Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Pimenta, R., Antunes, H., Bruno, P., and Veloso, A.P. 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