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Gazzetta Medica Italiana - Archivio per le Scienze Mediche 2020 July-August;179(7-8):437-47
DOI: 10.23736/S0393-3660.19.04119-6
Copyright © 2019 EDIZIONI MINERVA MEDICA
language: English
Quantifying performance impairment, specificity and fatigue in young soccer professionals: UIRFIDE Soccer test vs. Bangsbo Test
Cristina BLASCO-LAFARGA 1 ✉, Gianluca DONFRANCESCO 1, Antonio MONTOYA-VIECO 1, Ana CORDELLAT 1, Pablo MONTEAGUDO 1, Ainoa ROLDÁN 1, Fabio Y. NAKAMURA 2, 3
1 Sport Performance and Physical Fitness Research Group (UIRFIDE), Department of Physical Education and Sports, University of Valencia, Valencia, Spain; 2 The College of Healthcare Sciences, James Cook University, Douglas, Australia; 3 Department of Medicine and Aging Sciences, G. d’Annunzio University, Chieti, Italy
BACKGROUND: Repeated-acceleration-ability (RAA) has been gaining more and more importance in modern soccer over repeated-sprint-ability (RSA). This study aims to improve knowledge about RAA training and testing in youth, looking for increasing fatigue, specificity and complexity as compared to traditional RSA tests. It also ascertains for appropriate fatigue indicators.
METHODS: Ten professional soccer players (17.6±1.17 years) performed Bangsbo Test (BT), and one week later, UIRFIDE Soccer Test (UST), a complex test comprising three sections, repeated 6 times. UST
RESULTS: Heart rate was higher for UST (P=0.011), despite similar lactate and RPE. Less total time and linear-sprint patterns explain higher velocities in BT [(20.49-21.18) vs. (16.52-18.48) km/h], with significantly lower fatigue (DEC%: 2.41-4.62 vs. 5.59-12.91; FI%: 4.18-7.66 vs. 8.54-21.03). FI was less homogeneous than DEC, but reflected better individual differences. Both indexes kept within stability limits and were associated (r>0.80; P<0.005), while best performance showed no association with fatigue.
CONCLUSIONS: Age does not prevent from performing maximally the UST, closer to game specificity than BT. FI helps to identify individual differences in performance impairment, which is important when reproducing the worst scenario of a soccer game.
KEY WORDS: Exercise test; Exercise; Fatigue; Physical fitness; Soccer