The effect of ambient temperature on the shoe-surface interface release coefficient

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Deutscher übersetzter Titel:Auswirkung der Umgebungstemperatur auf den Loesungskoeffizienten der Schuh-Bodenflaeche-Haftung
Autor:Torg, Joseph S.; Stilwell, Gary; Rogers, Kenneth
Erschienen in:The American journal of sports medicine
Veröffentlicht:23 (1995), 1, S. 79-82, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0363-5465, 1552-3365
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Erfassungsnummer:PU199605107729
Quelle:BISp

Abstract des Autors

Previous studies of the shoe-surface interface correlated foot fixation with cleat length, configuration, and material composition as well as turf type and surface conditions. Our study examined the effect of temperature on the rotational torsion resistance of artificial turf football shoes. Five football shoe models, a flat-soled basketball-style turf shoe, a natural grass soccer-style shoe, and three multistudded turf shoes, were studied on dry Astro Turf at five temperatures (range, 52øF to 110øF). An assay device, a prosthetic foot mounted on a loaded stainless steel shaft, was used to determine the force necessary to release a shoe from the turf's surface. We used a torque wrench to apply a rotational force so that each shoe was pivoted counterclockwise through an arc of 60ø. Our results indicated that release coefficients differ within and among the shoe models at various turf temperatures. We also found that an increase in turf temperature, in combination with cleat characteristics, affects shoe-surface interface friction and potentially places the athlete's knee and ankle at risk of injury. Based on an established risk criterion, which correlated shoe-surface interface combinations in the laboratory with documented clinical occurrences, only the flat-soled basketball-style turf shoe could be designated "safe" or "probably safe" at all five temperatures. Verf.-Referat