The propulsion variables.

<p>^a Only applicable for the second block of the practice session in the feedback group.</p><p>^b Smoothness is calculated by dividing average force (N) by peak force(N).</p><p>Abbreviations: t, time(s); start(i), start of the current push (sample); end(i), end of the current push (sample); Tz, torque around wheel axle (Nm); Ø, angle (rad); Fx, Fy and Fz, force components (N); r, wheel radius (m); V, velocity (m/s).</p><p>The variables were used in the form of visual feedback to increase the intra-individual variability and as outcome variables to compare the change in propulsion technique between the groups. All variables except cadence were calculated as an average value of all pushes performed during last minute of each practice block. Equations from Vegter et al [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0127311#pone.0127311.ref012" target="_blank">12</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0127311#pone.0127311.ref025" target="_blank">25</a>].</p><p>The propulsion variables.