The purpose of this study was to assess the analysing reaction time (RT) and normalized power when calculated using two different methods: a method using ground reaction forces (GRFs) of only the legs (legs F-based method) and a method using GRFs of arms and legs (whole F-based method). In total, 127 block start motions from fourteen male sprinters were analysed from all participants. The RT of the legs F-based method was not similar to that of the whole F-based method: the mean difference was 7.4 ms and the 95% CI was –45.1–59.8 ms. In contrast, the normalized power of the legs F-based method was similar to that of the whole F-based method. This information will help reconsider the golden standard methods currently used to analyse RT and encourage the use of analysis methods to analyse the performance in block starts.
Otsuka, Mitsuo; Potthast, Wolfgang; Willwacher, Steffen; Goldmann, Jan; Kurihara, Toshiyuki; and Isaka, Tadao
"ASSESSMENT OF ANALYZING BLOCK START PERFORMANCE WITHOUT ARM GROUND REACTION FORCES,"
ISBS Proceedings Archive: Vol. 36:
1, Article 232.
Available at: https://commons.nmu.edu/isbs/vol36/iss1/232