Abstract
Objective
The aim of this study was to compare the functional ankle stability between professional and amateur soccer players as well as controls.
Materials and methods
Thirty professional soccer players, 30 amateur soccer players and 30 controls were evaluated. All participants completed a questionnaire. Range of motion (ROM), peroneal reaction time (PRT) and ankle position sense were measured. Balance control was investigated with the Biodex Stability System, measuring the stable level 8 and the unstable level 2.
Results
Professional soccer players cited significantly more frequent ankle sprains than all other groups (P = 0.002). They showed a significantly decreased dorsiflexion of the right foot (amateur: P = 0.017; controls: P = 0.004), an increased pronation of both feet (amateurs: right: P = 0.0048, left: P = 0.006; controls: right: P = 0.017, left: P = 0.007) and a decreased supination of the left foot in comparison to all other groups (amateurs: P = 0.003; controls: P = 0.004). Balance control showed no significant differences among all groups. Significant differences in angle reproduction were observed between professionals and amateurs for the left ankle joint at the positions of 105° (P = 0.0018) and 140° (P = 0.013). Professionals (P = 0.004) and amateurs (P = 0.001) showed a significantly delayed PRT of the right peroneus longus muscle compared to controls. In addition, the PRT of the right peroneus brevis muscle was significantly increased in professional soccer players in comparison to controls (P = 0.017).
Conclusions
Professional soccer players have shown more frequent ankle sprains, limited ROM, and delayed PRT of the right leg which reflects the higher risk of functional ankle instability due to intensified work-related use of feet. Therefore, proprioceptive exercises of the ankle in daily training programs are recommended in order to minimize the risk of ankle injuries and improve functional ankle stability.
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Acknowledgments
The authors thank the following individuals for their contributions to this article: Ursula Range for statistical support, Thomas Albrecht for photographical work, Sven Hartmann for the recruitment of participants as well as Karin Stevens for linguistic support in the manuscript preparation.
Conflict of interest
This study has been financially supported by Aircast Europe Company (Neubeuern, Germany). The funding had no involvement in the study design, in the collection, analysis and interpretation data, in the writing of the report and in the decision to submit the paper for publication. The authors of this study were independent from funders.
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Rein, S., Fabian, T., Weindel, S. et al. The influence of playing level on functional ankle stability in soccer players. Arch Orthop Trauma Surg 131, 1043–1052 (2011). https://doi.org/10.1007/s00402-011-1275-8
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DOI: https://doi.org/10.1007/s00402-011-1275-8