期刊
AMERICAN JOURNAL OF SPORTS MEDICINE
卷 37, 期 3, 页码 518-525出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0363546508328108
关键词
artificial surface; rotational traction; ankle; knee; injury
资金
- NFL Charities Foundation
Background: High rotational traction between football shoes and the playing surface may be a potential mechanism of injury for the lower extremity. Hypothesis: Rotational traction at the shoe-surface interface depends on shoe design and surface type. Study Design: Controlled laboratory study. Methods: A mobile testing apparatus with a compliant ankle was used to apply rotations and measure the torque at the shoe-surface interface. The mechanical surrogate was used to compare 5 football cleat patterns (total of 10 shoe models) and 4 football surfaces (FieldTurf, AstroPlay, and 2 natural grass systems) on site at actual surface installations. Results: Both artificial surfaces yielded significantly higher peak torque and rotational stiffness than the natural grass surfaces. The only cleat pattern that produced a peak torque significantly different than all others was the turf-style cleat, and it yielded the lowest torque. The model of shoe had a significant effect on rotational stiffness. Conclusion: The infill artificial surfaces in this study exhibited greater rotational traction characteristics than natural grass. The cleat pattern did not predetermine a shoe's peak torque or rotational stiffness. A potential shoe design factor that may influence rotational stiffness is the material(s) used to construct the shoe's upper. Clinical Relevance: The study provides data on the rotational traction of shoe-surface interfaces currently employed in football. As football shoe and surface designs continue to be updated, new evaluations of their performance must be assessed under simulated loading conditions to ensure that player performance needs are met while minimizing injury risk.
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