Dept of Sport and Exercise Sciences, University of Chester, UK.
Int J Sports Physiol Perform. 2016 May;11(4):515-21. doi: 10.1123/ijspp.2015-0406. Epub 2015 Sep 10.
While exercise-induced muscle damage (EIMD) after rugby league match play has been well documented, the specific match actions that contribute to EIMD are unclear. Accordingly, the purpose of this study was to investigate the positional demands of elite rugby league matches and examine their relationship with subsequent EIMD.
Twenty-eight performances (from 17 participants) were captured using 10-Hz global positioning systems over 4 competitive matches. Upper- and lower-body neuromuscular fatigue, creatine kinase (CK), and perceived muscle soreness were assessed 24 h before and at 12, 36, and 60 h after matches.
High-intensity running was moderately higher in backs (6.6 ± 2.6 m/min) than in forwards (5.1 ± 1.6 m/min), whereas total collisions were moderately lower (31.1 ± 13.1 vs 54.1 ± 37.0). Duration (r = .90, CI: .77-.96) and total (r = .86, CI: .70-.95) and high-intensity distance covered (r = .76, CI: .51-.91) were associated (P < .05) with increased CK concentration postmatch. Total collisions and repeated high-intensity efforts were associated (P < .05) with large decrements in upper-body neuromuscular performance (r = -.48, CI: -.74 to .02; r = -.49, CI: -.77 to .05, respectively), muscle soreness (r = -.68, CI: -.87 to -.10, r = -.66, CI: -.89 to .21, respectively), and CK concentration (r = .67, CI: .42-.85; r = .73, CI: .51-.87, respectively). All EIMD markers returned to baseline within 60 h.
Match duration, high-intensity running, and collisions were associated with variations in EIMD markers, suggesting that recovery is dependent on individual match demands.
虽然橄榄球联赛比赛后引起的肌肉损伤（EIMD）已有充分的文献记载，但导致 EIMD 的具体比赛动作尚不清楚。因此，本研究的目的是调查精英橄榄球联赛比赛的位置需求，并研究其与随后的 EIMD 的关系。
在 4 场比赛中，使用 10Hz 全球定位系统对 28 次（来自 17 名参与者）表现进行了捕捉。在比赛前 24 小时和比赛后 12、36 和 60 小时，评估了上下肢神经肌肉疲劳、肌酸激酶（CK）和肌肉酸痛感。
后防线的高强度跑动速度（6.6 ± 2.6 m/min）略高于前锋线（5.1 ± 1.6 m/min），而总碰撞次数略低（31.1 ± 13.1 比 54.1 ± 37.0）。持续时间（r =.90，CI：.77-.96）和总距离（r =.86，CI：.70-.95）和高强度距离覆盖（r =.76，CI：.51-.91）与赛后 CK 浓度升高相关（P <.05）。总碰撞次数和重复高强度努力与上半身神经肌肉性能的大幅下降有关（P <.05）（r = -.48，CI： -.74 至.02；r = -.49，CI： -.77 至.05）、肌肉酸痛感（r = -.68，CI： -.87 至 -.10，r = -.66，CI： -.89 至.21）和 CK 浓度（r =.67，CI：.42-.85；r =.73，CI：.51-.87）。所有 EIMD 标志物在 60 小时内恢复到基线。
比赛持续时间、高强度跑动和碰撞与 EIMD 标志物的变化有关，这表明恢复取决于个体比赛需求。
