THE APPLICATION OF FUNCTIONAL DATA ANALYSIS TECHNIQUES FOR CHARACTERIZING DIFFERENCES IN ROWING PROPULSIVE-PIN FORCE CURVES

  • John Warmenhoven
  • Richard Smith
  • Conny Draper
  • Stephen Cobley
  • Andrew Harrison
  • Norma Bargary
Keywords: principal components analysis, shape, waveform, on-water

Abstract

The pattern of propulsive force (measured at the pin), represented by force-time and forceangle graphs, typically differs among rowers. How the pattern differs according to competition level and gender has not been identified. Functional data analysis (FDA) techniques were used on force-time and force-angle data to identify the main modes of variance in curves representing thirty eight rowers of different competition levels (domestic, underage international and open international) and different gender. Stepwise discriminant function analysis showed strong classification of rowers using force-time and force-angle graphs and strong classification of female rowers. Male rowers, Underage rowers and Open International rowers showed weaker classification. Despite this, FDA provided useful information for the assessment of rowing performance.
Published
2016-05-05
Section
Coaching and Sports Activities