<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Rahel, Ammann,</dc:creator>
  <dc:creator>Taube, Wolfgang</dc:creator>
  <dc:creator>Wyss, Thomas</dc:creator>
  <dc:date>2016</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">The aim of this study was to validate the detection of ground contact time (GCT)  during running in two differently working systems: a small inertial measurement  sensor, PARTwear (PW), worn on the shoe laces, and the optical measurement  system, Optojump (OJ), placed on the track. Twelve well-trained subjects performed  12 runs each on an indoor track at speeds ranging from 3.0 - 9.0 m[middle dot]s-1.  GCT of one step per run (total 144) was simultaneously obtained by the PW, the OJ,  and a high- speed video camera (HSC), whereby the latter served as reference  system. The sampling rate was 1,000 Hz for all methods. Compared to the HSC, the  PW and the OJ systems underestimated GCT by -1.3 +/-6.1% and -16.5 +/-6.7% (p-  values &lt; .05), respectively. The intraclass correlation coefficients between PW and  HSC and between OJ and HSC were .984 and .853 (p-values &lt; .001), respectively.  Despite the constant systematic underestimation of GCT, analyses indicated that PW  successfully recorded GCT over a wide range of speeds. However, results showed  only moderate validity for the OJ system, with increasing errors when speed  decreased. In conclusion, the PW proved to be a highly useful and valid application,  and its use can be recommended not only for laboratory settings but also for field  applications. In contrast, data on GCT obtained by OJ during running must be treated  with caution, specifically when running speed changes or when comparisons are  made with GCT data collected by other measurement systems.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>https://folia.unifr.ch/global/documents/304912</dc:identifier>
  <dc:identifier>https://folia.unifr.ch/documents/304912/files/tau_apw.pdf</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1519/JSC.0000000000001299</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>License undefined</dc:rights>
  <dc:source>Journal of Strength and Conditioning Research. - 2016, vol. 30, no. 7, p. 2057-2063</dc:source>
  <dc:subject>info:eu-repo/classification/udc/796</dc:subject>
  <dc:title xmlns:ns1="xml" ns1:lang="en">Accuracy of PARTwear inertial sensor and Optojump optical measurement system for measuring ground contact time during running</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>