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Field and laboratory testing in young elite soccer players

¹ National Centre of Sports Medicine, El Menzah, Tunisia
² Laboratoire ACTES, UFR-STAPS Antilles-Guyane, Pointe à Pitre, France
³ Laboratoire GIP Exercice, St Etienne, France
⁴ Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, and Department of Cardiology, St Olavs Hospital, Trondheim, Norway

Correspondence to:
Correspondence to:
Dr Wisløff
Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Olav Kyrres gt 3, 7489 Trondheim, Norway; ulrik.wisloff{at}medisin.ntnu.no

Aim: To determine if there are correlations between the physical fitness of young soccer players assessed by field and laboratory testing.

Methods: Thirty four male soccer players took part in the study (mean (SD) age 17.5 (1.1) years, height 177.8 (6.7) cm, weight 70.5 (6.4) kg). Maximal oxygen uptake (VO₂MAX) during treadmill running and vertical jump height on a force platform were measured in the laboratory. Field tests consisted of a soccer specific endurance test (Bangsbo test) and 30 m sprint with 10 m lap times.

Results: The Bangsbo test correlated with the lowest velocity associated with VO₂MAX (vVO₂MAX; R² = 0.55, p<0.001), but not with VO₂MAX. Sprint times at 30 m and 20 m were related to peak extension velocity and peak extension force measured during vertical jumping, but not to vertical jump height per se. The jumping force and velocity could explain 46% of the 30 m sprint performance (R² = 0.46, p<0.001).

Conclusion: The Bangsbo test and 30 m sprint test correlate with vVO₂MAX and vertical jump force and velocity respectively. The Bangsbo test does not give a good estimate of VO₂MAX in young soccer players.

Keywords: football; field tests; laboratory tests; aerobic power; anaerobic power

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