•  
  •  
 

DIFFERENCES IN DECELERATION BETWEEN THE PENULTIMATE AND FINAL STEPS OF REACTIVE AND PLANNED CROSSOVER CUTS

Abstract

D. Athanasiadis, C.M.S.Mulligan, M.F. Norcross

Oregon State University

Penultimate and final step deceleration profiles during side-cuts differ under planned and reactive conditions which may impact performance. However, it is unclear how these steps are utilized in a crossover cut (XOC). PURPOSE: To determine whether deceleration is different between the penultimate and final steps of XOC and if those differences are modified by planning time. METHODS: Thirty-six females (Age: 20.9±1.7years; Height: 1.66 ± 0.07 m, Mass: 62.4 ±8.7 kg) completed 5 reactive (i.e., through a light stimulus) and planned 60oXOC off their dominant leg. Penultimate and final steps were captured using an optical motion capture system interfaced with two force plates. Braking impulse (i.e., area under the posterior ground reaction force curve) and the change in center of mass velocity (ΔCOMv) during the deceleration phase (initial contact to peak knee flexion) were quantified for each step. Within Subjects ANOVAs and planned, pairwise comparisons with a Bonferroni correction were used to compare the effects of condition, step, and their interaction on outcome variables (α≤0.05). RESULTS: We identified a significant interaction for braking impulse and ΔCOMv (p

Funded by the National Athletic Trainers’ Association Research & Education Foundation

Additional Files
Table 1.docx (13 kB)
Table 1

This document is currently not available here.

Share

COinS