Journal of Sports Medicine & Doping Studies

James G. Hopker

Publications

• Research Article
  A Novel Field Test to Determine Critical Speed
  Author(s): Galbraith A, James G. Hopker, Jobson SA and Passfield LGalbraith A, James G. Hopker, Jobson SA and Passfield L
  
  The aim of this study was to assess the reliability of a novel field test of critical running speed (CS). Ten trained male distance runners completed a familiarisation trial plus three separate experimental trials on a standard 400 m athletics track. Each trial consisted of three distances (1200, 2400 and 3600 metres) that were selected to produce finishing times in the region of 3, 7 and 12 minutes respectively. Participants were instructed to cover the set distance in the fastest time possible. Participants rested for 30 minutes between efforts. Data were modelled using the linear distance-time model, described by the equation: d = (CS x t) + ARC, where: d = distance run (m), t = running time (s), and ARC = anaerobic running capacity (m). Results demonstrated a coefficient of variation (CV) of 2.0% (95% confidence limit (95% CL): 1.4–3.8%) for trials 2–1 and 1.3% (95% CL.. Read More»
  DOI: 10.4172/2161-0673.1000101

  Abstract PDF