Rhodes James M, Mason Barry S, Paulson Thomas A W, Goosey-Tolfrey Victoria L
Int J Sports Physiol Perform. 2018 Jan 1;13(1):37-43. doi: 10.1123/ijspp.2016-0700. Epub 2018 Jan 2.
To examine the speed profiles of elite wheelchair rugby (WCR) players during game-simulation training drills of differing player number and shot-clock regulations. A secondary aim was to determine whether the profiles were further influenced by player classification.
Eight elite WCR players (low-point n = 3, high-point n = 5) were monitored using a radio-frequency-based indoor tracking system during training sessions over a 5-mo period. Speed profiles were collected for 3 modified game-simulation drills-3-versus-3 drills (n = 8 observations), 30-s shot clock (n = 24 observations), and 15-s shot clock (n = 16 observations)-and were compared with regular game-simulation drills (4 vs 4, 40-s shot clock; n = 16 observations). Measures included mean and peak speed; exercise-intensity ratios, defined as the ratio of time spent performing at high and low speeds; and the number of high-speed activities performed.
Compared with regular game-simulation drills, 3-versus-3 drills elicited a moderate increase in mean speed (6.3%; effect size [ES] = 0.7) and the number of high-speed activities performed (44.1%; ES = 1.1). Minimal changes in speed profiles were observed during the 30-s shot clock, although moderate to large increases in all measures were observed during the 15-s shot-clock drills. Classification-specific differences were further identified, with increased activity observed for high-point players during the 3-versus-3 drill and for low-point players during the 15-s shot clock.
By reducing the number of players on court and the shot clock to 15 s, coaches can significantly increase elite WCR players' speed profiles during game-simulation drills.
研究精英轮椅橄榄球(WCR)运动员在不同球员数量和进攻时间规则的比赛模拟训练中的速度曲线。次要目的是确定这些曲线是否会受到球员分类的进一步影响。
在5个月的训练期间,使用基于射频的室内跟踪系统对8名精英WCR运动员(低分值n = 3,高分值n = 5)进行监测。收集了3种改良比赛模拟训练的速度曲线——3对3训练(n = 8次观察)、30秒进攻时间(n = 24次观察)和15秒进攻时间(n = 16次观察)——并与常规比赛模拟训练(4对4,40秒进攻时间;n = 16次观察)进行比较。测量指标包括平均速度和峰值速度;运动强度比,定义为高速和低速运动时间的比值;以及高速活动的次数。
与常规比赛模拟训练相比,3对3训练使平均速度适度增加(6.3%;效应量[ES]=0.7),高速活动次数增加(44.1%;ES = 1.1)。在30秒进攻时间内观察到速度曲线变化最小,而在15秒进攻时间训练中,所有测量指标均观察到中度至大幅增加。进一步确定了分类特异性差异,在3对3训练中高分值球员的活动增加,在15秒进攻时间训练中低分值球员的活动增加。
通过减少场上球员数量并将进攻时间缩短至15秒,教练可以在比赛模拟训练中显著提高精英WCR球员的速度曲线。