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An executive master's programme thesis from Aalborg University
Book cover


Physical Performance in Adolescent Academy Female Football Players: The Influence of Biological Maturation

Translated title

Fysisk Præstation Blandt Ungdoms Akademi Pigefodboldspillere: Indflydelsen af Biologisk Modning

Authors

;

Term

4. semester

Publication year

2025

Submitted on

Pages

28

Abstract

As teenagers grow, their bodies mature at different rates, which can shape sports performance. This study examined how biological maturation—estimated as percentage of predicted adult height (%PAH)—relates to jumping, sprinting, change of direction, and endurance in Danish female academy football players aged U13–U19. A total of 125 players from three academies took part. We recorded height, weight, chronological age, and parents’ heights and used the Khamis–Roche method to estimate %PAH. Players completed a countermovement jump (CMJ), a 30 m sprint with 5, 10, and 25 m split times, an Arrowhead change‑of‑direction test to the right and left, and the Yo‑Yo Intermittent Recovery Level 1 (YYIR1) endurance test. Based on %PAH, players were grouped as pre‑, circa‑, or post‑peak height velocity (PHV; the main growth spurt). Results showed that post‑PHV players sprinted faster than pre‑PHV players over 10 m and 30 m, were faster on the Arrowhead right than pre‑PHV, and faster on the Arrowhead left than both pre‑ and circa‑PHV. They also performed better on YYIR1 than pre‑ and circa‑PHV. There were no group differences in CMJ, or in the 5 m and 25 m sprint splits. In conclusion, in these U13–U19 female academy players, biological maturation appears to influence 10 m and 30 m sprinting, change of direction, and endurance, but not the 5 m and 25 m sprint splits or jumping. The magnitude of this influence seems smaller in females than typically reported in males.

Når teenagere vokser, modnes deres kroppe i forskelligt tempo, og det kan påvirke præstation i sport. Denne undersøgelse så på, hvordan biologisk modning – anslået som procent af forventet voksenhøjde (%PAH) – hænger sammen med hop, sprint, retningsskift og udholdenhed hos danske U13–U19 pigefodboldspillere fra akademier. I alt deltog 125 spillere fra tre akademier. Højde, vægt, kronologisk alder og forældrenes højde blev indsamlet og brugt i Khamis–Roche-metoden til at beregne %PAH. Spillerne gennemførte et stående vertikalspring (countermovement jump, CMJ), en 30 m sprint med mellemtider ved 5, 10 og 25 m, en Arrowhead-retningsskiftetest til højre og venstre samt Yo–Yo Intermittent Recovery niveau 1 (YYIR1) som udholdenhedstest. Ud fra %PAH blev de grupperet som før, omkring eller efter vækstspurten (peak height velocity, PHV). Resultaterne viste, at spillere efter vækstspurten løb hurtigere end spillere før vækstspurten på 10 m og 30 m, var hurtigere i Arrowhead til højre end før-gruppen og hurtigere i Arrowhead til venstre end både før- og omkring-grupperne. De klarede sig også bedre i YYIR1 end før- og omkring-grupperne. Der var ingen forskelle mellem grupperne i CMJ eller i 5 m og 25 m sprint. Konklusionen er, at biologisk modning kan påvirke præstation i 10 m og 30 m sprint, retningsskift og udholdenhed, men ikke 5 m og 25 m sprint eller hop, hos danske U13–U19 pigefodboldspillere. Effekten ser desuden ud til at være mindre hos piger end hos drenge.

[This apstract has been rewritten with the help of AI based on the project's original abstract]