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Relationship between static and dynamic balance abilities in Italian professional and youth league soccer players

Massimiliano Pau¹, Federico Arippa¹, Bruno Leban¹

¹Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy.

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine

|April 15, 2015

Abstract

Objectives:

To assess the existence of correlations between static and dynamic balance abilities in young and professional elite soccer players.

Design:

Cross-sectional.

Participants:

Fifty-one elite players who regularly compete at national level divided into two groups: Professional (age 18-34, n = 20) and Under 15-17 (age 14-16, n = 31).

Main Outcome Measures:

Dynamic balance was assessed for the case of a single-leg landing task by means of vertical time to stabilization (TTS) and postural sway calculated on the basis of center-of-pressure (COP) trajectories (sway area, COP displacements in antero-posterior and medio-lateral direction, COP path length). The same parameters were also measured for a 20 s one-legged stance to assess static balance abilities.

Results:

No significant correlations were found between static and dynamic balance parameters except for TTS and COP displacements in the antero-posterior direction (r = 0.29, p = 0.003). Professional players are characterized by lower TTS in comparison with youth leagues players (0.767 vs. 1.188 s for the dominant limb, p < 0.001) and exhibit reduced sway area (of 34-40%, p < 0.05) for both conditions tested.

Conclusion:

The assessment of balance in soccer players should be performed with both dynamic and static tests, considering that the postural control performances in the two cases are not related.

Keywords:

Dynamic balance Postural control Soccer Time to stabilization (TTS)

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