Clarke Anthea C, Anson Judith, Pyne David
a Department of Physiology , Australian Institute of Sport , Canberra , Australia.
J Sports Sci. 2015;33(11):1101-8. doi: 10.1080/02640414.2014.988740. Epub 2014 Dec 15.
High-speed running (>5 m · s⁻¹) is commonly reported in men's rugby union and sevens; however, the appropriateness of using the same speed threshold for Women's Rugby Sevens players is unclear, and likely underestimates the degree of high-intensity exercise completed by female players. The aim of this study was to establish, for international Women's Rugby Sevens players, a physiologically defined threshold - speed at the second ventilatory threshold (VT(2peed)) - for the analysis of high-intensity running, using mean and individualised thresholds. Game movement patterns (using 5 Hz GPS) of 12 international Women's Rugby Sevens players (23.5 ± 4.9 ears, 1.68 ± 0.04 m, 68.2 ± 7.7 kg; mean ± s) were collected at an international tournament. Seven of these players also completed a treadmill VO(2max) test to estimate VT(2speed). Compared to the mean VT(2speed) threshold (3.5 m · s⁻¹), the industry-used threshold of 5 m · s⁻¹ underestimated the absolute amount of high-intensity running completed by individual players by up to 30%. Using an individualised threshold, high-intensity running could over- or underestimating high-intensity running by up to 14% compared to the mean VT(2peed) threshold. The use of individualised thresholds provides an accurate individualised assessment of game demands to inform the prescription of training.
在男子英式橄榄球联合会比赛和七人制橄榄球比赛中，经常会出现高速奔跑（>5米·秒⁻¹）的情况；然而，对于女子七人制橄榄球运动员使用相同速度阈值是否合适尚不清楚，而且这可能低估了女性运动员完成的高强度运动程度。本研究的目的是为国际女子七人制橄榄球运动员确定一个生理学定义的阈值——第二通气阈值（VT(2速度)）时的速度——用于分析高强度奔跑，采用平均阈值和个性化阈值。在一项国际比赛中收集了12名国际女子七人制橄榄球运动员（23.5±4.9岁，1.68±0.04米，68.2±7.7千克；均值±标准差）的比赛移动模式（使用5赫兹全球定位系统）。其中7名运动员还完成了跑步机最大摄氧量（VO(2max)）测试以估计VT(2速度)。与平均VT(2速度)阈值（3.5米·秒⁻¹）相比，行业常用的5米·秒⁻¹阈值低估了个别运动员完成的高强度奔跑的绝对量达30%。使用个性化阈值时，与平均VT(2速度)阈值相比，高强度奔跑的估计可能高估或低估高达14%。使用个性化阈值可为训练处方提供对比赛需求的准确个体化评估。
