Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, Australia.
J Strength Cond Res. 2011 Jun;25(6):1553-62. doi: 10.1519/JSC.0b013e3181db9bdd.
The purpose of this study was to investigate the relationship between the prematch and short-term postmatch biochemical and endocrine responses to the intensity, number, and distribution of impacts associated with collisions during elite Rugby League match play. Seventeen elite male Rugby League players each provided blood and saliva samples 24 hours prematch, 30 minutes prematch, 30 minutes postmatch, and then at 24-hour intervals for a period of 5 days postmatch to determine plasma creatine kinase concentration ([CK]) and salivary cortisol concentration ([sCort]). The intensity, number, and distribution of impact forces experienced by players during match play were recorded using portable global positioning systems (GPSs). The change in the dependent variables at each sample collection time was compared to 24 hours prematch and 30-minute prematch measures. The [CK] and [sCort] increased significantly (p < 0.05) during match play. Significant correlations (p < 0.05) were observed between the number of hit-ups and peak [CK] 24 hours postmatch, 48 hours postmatch, and 72 hours postmatch (p < 0.05). The number of impacts recorded in zone 5 (8.1-10.0G) and zone 6 (>10.1G) during match play was significantly correlated (p < 0.05) to [CK] 30 minutes postmatch, 24 hours post, 48 hours post, and 72 hours postmatch. The GPS was able to provide data on the intensity, number, and distribution of impacts resulting from collisions during match play. Elite Rugby League match play resulted in significant skeletal muscle damage and was highly dependent on the number of heavy collisions >8.1G. [CK] remained elevated 120 hours postmatch identifying that at least 5 days modified activity is required to achieve full recovery after elite Rugby League match play.
本研究旨在探讨精英英式橄榄球比赛中与碰撞相关的冲击强度、数量和分布与赛前和短期赛后生化和内分泌反应之间的关系。17 名精英男性英式橄榄球运动员在赛前 24 小时、赛前 30 分钟、赛后 30 分钟以及赛后 5 天内每隔 24 小时提供血液和唾液样本，以确定血浆肌酸激酶浓度 ([CK]) 和唾液皮质醇浓度 ([sCort])。使用便携式全球定位系统 (GPS) 记录运动员在比赛中经历的冲击强度、数量和分布。在每个样本采集时间，比较因变量的变化与赛前 24 小时和赛前 30 分钟的测量值。在比赛期间，[CK] 和 [sCort] 显著增加 (p < 0.05)。在赛后 24 小时、48 小时和 72 小时，触地次数与峰值 [CK] 之间存在显著相关性 (p < 0.05)。比赛中记录的区 5（8.1-10.0G）和区 6（>10.1G）的冲击次数与赛后 30 分钟、24 小时、48 小时和 72 小时的 [CK] 显著相关 (p < 0.05)。GPS 能够提供比赛中因碰撞导致的冲击强度、数量和分布的数据。精英英式橄榄球比赛导致明显的骨骼肌损伤，高度依赖于>8.1G 的剧烈碰撞次数。赛后 120 小时 [CK] 仍处于升高状态，表明至少需要 5 天的调整活动才能在精英英式橄榄球比赛后完全恢复。
