Griffith Sports Physiology and Performance, School of Allied Health Sciences, Griffith University, Gold Coast, Queensland 4222, Australia.
Queensland Academy of Sport, Nathan, Queensland 4111, Australia.
J Sports Sci Med. 2021 Mar 1;20(1):142-148. doi: 10.52082/jssm.2021.142. eCollection 2021 Mar.
Effective time-motion analysis can provide information directly applicable to the design of physical conditioning and testing programmes. The aim of the present study was to determine the external output of female beach volleyball players during tournament match-play and to assess the effect of competition level, margin of score differential and alterations of external output within matches. The external output profile of ten adult level (age 27 ± 3 y) and ten under 23 ('U23'; age 19 ± 2 y) female beach volleyball players were determined using GPS technology (10 Hz) during 60 matches (n = 50 first and second sets and 20 third sets files) played during their respective Australian Beach Volleyball Championship tournaments. Comparisons between groups and the influence of contextual factors on the external output within matches were analysed using linear mixed models. Adult beach volleyball players covered a greater relative distance (i.e., m·min) in speed zone 2 (1.0-1.99 m·s; 42.0% of total relative distance) and zone 3 (≥2.0 m·s; 10.9% of total relative distance) compared to U23 players. Relative distance, mean acceleration/deceleration and the relative distance covered in acceleration zone 2 and deceleration zone 2 and 3 was greater in set 1 compared to set 2. Sets that were decided by smaller score margins (<6-point score differential) were comprised of a greater relative distance, peak speed, greater mean acceleration and deceleration output and a greater relative distance in speed zone 1 and 3 compared to sets decided by larger score margins (>5-point score differential). The findings from this study suggest that there are contextual factors that influence the speed and acceleration/deceleration profile of female beach volleyball players such as tournament level, score margin and set-to-set variations that may have implications for the physiological and mechanical requirements of female players preparing for competition.
有效的时间-动作分析可以提供直接适用于体能训练和测试计划设计的信息。本研究的目的是确定女子沙滩排球运动员在比赛中的外部输出，并评估比赛水平、比分差异幅度和比赛中外部输出变化对比赛的影响。使用 GPS 技术（10Hz），对 10 名成年（年龄 27±3 岁）和 10 名 23 岁以下（U23；年龄 19±2 岁）的成年女子沙滩排球运动员在各自的澳大利亚沙滩排球锦标赛中进行的 60 场比赛（n=50 个第一和第二局以及 20 个第三局文件）的外部输出情况进行了确定。使用线性混合模型对组间差异以及比赛中外部输出的上下文因素的影响进行了分析。成年沙滩排球运动员在速度区 2（1.0-1.99m·s；总相对距离的 42.0%）和区 3（≥2.0m·s；总相对距离的 10.9%）中覆盖的相对距离较大，而 U23 运动员则较小。与第二局相比，第一局的相对距离、平均加速度/减速度以及在加速区 2 和减速区 2 和 3 中覆盖的相对距离较大。比分差距较小（<6 分的比分差异）的比赛的相对距离、峰值速度、平均加速度和减速度输出以及速度区 1 和 3 的相对距离都较大，而比分差距较大（>5 分的比分差异）的比赛则相对较小。本研究的结果表明，有一些上下文因素会影响女子沙滩排球运动员的速度和加速度/减速度特征，例如比赛水平、比分差距和局间变化，这可能对女子运动员为比赛做准备时的生理和机械要求产生影响。
