Murdoch Applied Sports Science Laboratory, Murdoch University, Perth, WesternAustralia, Australia.
Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Perth, Western Australia, Australia.
J Sports Sci. 2023 Mar;41(6):512-518. doi: 10.1080/02640414.2023.2225025. Epub 2023 Jun 13.
This investigation explored differences in the pre-tournament preparation period relative to the movement demands of the Tokyo 2020 Olympic Games for the Australian male field-hockey team. Movement data was collected over 7 months prior to and during the 13-day Olympic tournament. Duration, distance (total; >80% individual peak velocity; >5 m.s), high-speed decelerations (>3.5 m.s), and total accelerations and decelerations (>2.5 m.s) were measured during each running-based session. A 13-day moving sum was calculated for each variable and compared to a player-specific "worst-case scenario" (WCS) for intra-tournament total movement demands. Summed 13-day movement demands exceeded the WCS for 6-58% of the preparation period across variables, for the entire squad. During the tournament, midfielders covered significantly greater sprint distance than Defenders (+84%, = 0.020), with no other positional differences found. Greater variation in tournament movement demands was observed between players for accelerations, decelerations, and high-speed distance (CV = 19-46%) compared to duration and distance (CV = 4-9%). In conclusion, physical preparation exposed athletes to movement demands which surpassed WCS. Additionally, gross measures of training volume (duration and distance) are more generalisable to a squad; however, additional metrics such as sprint distance and high-speed decelerations are needed to better define positional and individual movement demands, and therefore, should be monitored by practitioners.
本研究调查了澳大利亚男子曲棍球队在赛前准备阶段相对于东京 2020 年奥运会比赛的运动需求的差异。在奥运会 13 天的比赛前和比赛期间,共收集了 7 个月的运动数据。在每次基于跑步的训练中,测量了持续时间、距离(总距离;>80%个人峰值速度;>5m.s)、高速减速(>3.5m.s)以及总加速和减速(>2.5m.s)。为每个变量计算了 13 天的移动总和,并将其与球员特定的“最坏情况场景”(WCS)进行了比较,以比较比赛期间的总运动需求。在整个球队中,所有变量的 13 天总运动需求中有 6-58%超过了 WCS 准备期。在比赛中,中场球员的冲刺距离比后卫球员多(+84%,=0.020),没有发现其他位置差异。与持续时间和距离(CV=4-9%)相比,在比赛中,球员之间的加速、减速和高速距离的变化更大(CV=19-46%)。总之,身体准备使运动员面临超过 WCS 的运动需求。此外,训练量的总指标(持续时间和距离)更具普遍性;然而,需要额外的指标,如冲刺距离和高速减速,以更好地定义位置和个人的运动需求,因此,应受到从业者的监测。