Kinematic analysis of the crossover step technique in elite female volleyball players

Abstract

BACKGROUND: The aim of the investigators was to conduct a kinematic analysis of the crossover block stepping technique in elite female volleyball players based on acceleration and time data from each phase, and to compare the performances of players in different positions. The secondary aim of this study was to conduct a correlation analysis between the anthropometric and explosive strength characteristics of the participants and their crossover block stepping performance. METHODS: Twenty-nine elite female volleyball players (20 +/- 4.4 years; 1.80 +/- 0.07 m; 68.7 +/- 7.84 kg) participated in this study. Athletes were divided into two groups according to their playing positions as middle blockers (MB; N.=8) and wing players (WP; N.=21). WPs included setters, opposite and outside hitters. In addition, each playing position was analyzed separately. RESULTS: Players were significantly faster toward the left direction compared to the right during the total movement. The highest rate of force development was observed during Phase 3 in both directions. MBs exhibited higher mean acceleration in both directions during all phases compared to WPs. Both countermovement jump (CMJ) and squat jump (SJ) had weak-to-moderate correlations with Phase 1 acceleration toward the left (r: 0.30-0.32). Height (r: 0.36-0.46) and leg length (r: 0.38-0.55) were moderately correlated with mean acceleration during the overall movement in each direction. CONCLUSIONS: Strength and conditioning coaches may utilize exercises aimed at improving triple extension performance to enhance push-off during the initiation of the crossover step. Taller players with longer legs have an advantage in crossover block stepping.