@article{ref1,
title="Effects of the playing surface on plantar pressures and potential injuries in tennis",
journal="British journal of sports medicine",
year="2007",
author="Girard, Olivier and Eicher, F. and Fourchet, F. and Micallef, J. P. and Millet, Gregoire P.",
volume="47",
number="11",
pages="733-738",
abstract="OBJECTIVES: To examine the influence of different playing surfaces on in-shoe loading patterns during tennis-specific movements. METHODS: Ten experienced male players performed two type of tennis-specific displacements (serve and volley (SV) and baseline play (BA)) on two different playing surfaces; e.g. clay v Greenset. Max and mean force and pressure, contact time, contact area and relative load were recorded by an insole with 99 sensors (X-Pedar system) and divided into 9-areas. RESULTS: Regarding the whole foot, mean force (SV: 615 +/- 91 v 724 +/- 151 N; -12.4%, p&lt;0.05 and BA: 614 +/- 73 v 717 +/- 133 N; -11.6%, p&lt;0.05) was lower on clay than on Greenset, whereas contact time was longer (SV: 299 +/- 113 v 270 +/- 148 ms; +16.5%, NS and BA: 354 +/- 72 v 272 +/- 60 ms; +30.3%, p&lt;0.001). Greenset induced higher loading in hallux (SV: +15.3%, p&lt;0.05 and BA: +11.4%, NS) and lesser toes areas (SV: +12.6%, p&lt;0.05 and BA: +18.0%, p&lt;0.01). In contrast, the relative load on the medial (SV: +27.4%, p&lt;0.05 and BA: +16.1%, p=0.06) and lateral midfoot (SV: +23.3%, p&lt;0.05 and BA: +28.3%, p&lt;0.01) was higher on clay. CONCLUSIONS: This study demonstrates that playing surface affects plantar loading in tennis: Greenset induced higher loading in hallux (SV: +15.3%, p&lt;0.05 and BA: +11.4%, NS) and lesser toes areas (SV: +12.6%, p&lt;0.05 and BA: +18.0%, p&lt;0.01) but lower relative load on the medial (SV: -27.4%, p&lt;0.05 and BA: -16.1%, p= 0.06) and lateral midfoot (SV: -23.3%, p&lt;0.05 and BA: -28.3%, p&lt;0.01) than clay.   <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsm.2007.036707",
url="http://dx.doi.org/10.1136/bjsm.2007.036707"
}