Clarke Anthea C, Anson Judith M, Pyne David B
Physiology Dept, Australian Institute of Sport, Canberra, Australia.
Int J Sports Physiol Perform. 2015 Sep;10(6):808-14. doi: 10.1123/ijspp.2014-0590. Epub 2015 Apr 7.
To examine relationships between on-field game movement patterns and changes in markers of neuromuscular fatigue and muscle damage during a 2-d women's rugby sevens tournament.
Female national (mean ± SD n = 12, 22.3 ± 2.5 y, 1.67 ± 0.04 m, 65.8 ± 4.6 kg) and state (n = 10, 24.4 ± 4.3 y, 1.67 ± 0.03 m, 66.1 ± 7.9 kg) representative players completed baseline testing for lower-body neuromuscular function (countermovement-jump [CMJ] test), muscle damage (capillary creatine kinase [CK]), perceived soreness, and perceived recovery. Testing was repeated after games on days 1 and 2 of the tournament. GPS (5-Hz) data were collected throughout the tournament (4-6 games/player).
National players were involved in greater on-field movements for total time, distance, high-speed running (>5 m/s), and impacts >10 g (effect size [ES] = 0.55-0.97) and displayed a smaller decrement in performance from day 1 to day 2. Despite this, state players had a much greater 4-fold increase (δCK = 737 U/L) in CK compared with the 2-fold increase (δCK = 502 U/L) in national players (ES = 0.73). Both groups had similar perceived soreness and recovery while CMJ performance was unchanged. High-speed running and impacts >10 g were largely correlated (r = .66-.91) with δCK for both groups.
A 2-day women's rugby sevens tournament elicits substantial muscle damage; however, there was little change in lower-body neuromuscular function. Modest increases in CK can largely be attributed to high-speed running and impacts >10 g that players typically endure.
研究在为期两天的女子七人制橄榄球锦标赛期间，场上比赛移动模式与神经肌肉疲劳和肌肉损伤标志物变化之间的关系。
国家女子代表队（平均±标准差，n = 12，22.3±2.5岁，身高1.67±0.04米，体重65.8±4.6千克）和州女子代表队（n = 10，24.4±4.3岁，身高1.67±0.03米，体重66.1±7.9千克）的代表球员完成了下肢神经肌肉功能（反向纵跳[CMJ]测试）、肌肉损伤（毛细血管肌酸激酶[CK]）、感知酸痛和感知恢复的基线测试。在锦标赛第1天和第2天的比赛后重复进行测试。在整个锦标赛期间（每位球员4 - 6场比赛）收集GPS（5赫兹）数据。
国家代表队球员在场上的总运动时间、距离、高速奔跑（>5米/秒）以及冲击力>10g方面的运动量更大（效应量[ES]=0.55 - 0.97），并且从第天到第2天表现下降幅度较小。尽管如此，州代表队球员的CK增加幅度比国家代表队球员大得多，增加了4倍（δCK = 737 U/L），而国家代表队球员增加了2倍（δCK = 502 U/L）（ES = 0.73）。两组的感知酸痛和恢复情况相似，而CMJ表现没有变化。两组的高速奔跑和冲击力>10g与δCK在很大程度上相关（r = 0.66 - 0.91）。
为期两天的女子七人制橄榄球锦标赛会引发大量肌肉损伤；然而，下肢神经肌肉功能几乎没有变化。CK的适度增加在很大程度上可归因于球员通常承受的高速奔跑和冲击力>10g。
