@article{ref1,
title="A comparison of artificial turf",
journal="Journal of trauma",
year="2004",
author="Naunheim, Rosanne and Parrott, H. and Standeven, J.",
volume="57",
number="6",
pages="1311-1314",
abstract="BACKGROUND:: In an attempt to decrease injuries, newer forms of artificial turf have been marketed. The purpose of this study was to determine whether a new shredded rubber-based turf improves impact attenuation. METHODS:: An instrumented computerized impact recording device (IRD, Techmark, Lansing, MI) was dropped 20 times from a height of 48 inches onto five types of turf used by a professional football team. RESULTS:: Duncan's multiple range test shows that the new rubber-based field and the older foam field are not significantly different. There were significant differences, however, between sites on the shredded rubber-based field. CONCLUSION:: The change from a foam-based system to a shredded rubber-based system had no effect on impact attenuation overall. However, areas in the shredded rubber-based field were significantly compacted, causing some sites to be much harder than the foam-based surface it replaced.  Keywords: American football;",
language="en",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}