Background: This study highlights the heart rate (HR) and blood lactate (La) response of junior handball players of two positions – wings and backs, during competitive matches. Methods: Heart rate and blood lactate of twelve handball players – 6 Backs (B) and 6 Wingers (W)] – were recorded in quarter- and semifinal matches of the tournament. HR was recorded continuously by heart rate telemeter whereas La was measured at rest, after warm up and immediately after the end of first- and second halves of the matches. Results: Average HR and Maximum Heart Rate Reserve (MHRR) of the players were similar in each half of play. No significant difference (p<0.05) in average HR and MHRR were observed between B (169±17.5 beats/min and 74.3±9.4%) and W (169.5±16.3 beats/min and 74.1±8.5%). W and B played about 1/5th of their playing time above the Anerobic Threshold level. Average HR of the players in each 5 min of play could vary significantly but no such difference per 15 min of play was found. Lactate of W and B after the first half of play were 7.4±1.6 and 7.2±1.5 mM and after the end of the matches were 7.9±0.4 and 7.6±1.4 mM respectively. No significant difference in La was found between W and B. Conclusion: (a) Handball play is a high intensity game, (b) the workload does not vary between W and B, (c) the intensity of play could vary in every 5 min of play but there is no difference in average intensity for each 15 min, and (d) handball is played aerobically for majority of the time.

中文翻译：

---

青少年手球运动员（18岁以下）在比赛期间的心率和乳酸反应

背景：本研究着重说明了在比赛中两个位置（翅膀和后背）的初级手球运动员的心率（HR）和血乳酸（La）的反应。方法：在锦标赛的四分之一决赛和半决赛中，记录了十二名手球运动员的心率和血液乳酸-“ 6个后卫（B）和6个边锋（W）]”。心率遥测仪连续记录心率，而热身后，比赛的第一半和第二半结束后立即测量La。结果：运动员的平均心率和最大心律储备（MHRR）在每半场比赛中都相似。B（169±17.5搏动/分钟和74.3±9.4％）和W（169.5±16.3搏动/分钟和74.1±8.5％）之间未见平均HR和MHRR的显着差异（p <0.05）。W和B的演奏时间超过有氧阈值水平的1/5。每5分钟游戏中玩家的平均HR可能会有显着差异，但每15分钟游戏中没有发现这种差异。W和B的乳酸在上半场比赛后分别为7.4±1.6和7.2±1.5 mM，比赛结束后分别为7.9±0.4和7.6±1.4 mM。W和B之间的La值没有显着差异。结论：（a）手球比赛是高强度的比赛，（b）W和B之间的工作量没有变化，（c）每5个比赛中的比赛强度可能有所不同分钟，但每15分钟的平均强度没有差异，并且（d）在大部分时间里，有氧运动是手球。每5分钟游戏中玩家的平均HR可能会有很大差异，但每15分钟游戏中没有发现这种差异。W和B的乳酸在上半场比赛后分别为7.4±1.6和7.2±1.5 mM，比赛结束后分别为7.9±0.4和7.6±1.4 mM。W和B之间的La值没有显着差异。结论：（a）手球比赛是高强度的比赛，（b）W和B之间的工作量没有变化，（c）每5个比赛中的比赛强度可能有所不同分钟，但每15分钟的平均强度没有差异，并且（d）在大多数情况下，有氧运动是手球。每5分钟游戏中玩家的平均HR可能会有显着差异，但每15分钟游戏中没有发现这种差异。W和B的乳酸在上半场比赛后分别为7.4±1.6和7.2±1.5 mM，比赛结束后分别为7.9±0.4和7.6±1.4 mM。W和B之间的La值没有显着差异。结论：（a）手球比赛是高强度的比赛，（b）W和B之间的工作量没有变化，（c）每5个比赛中的比赛强度可能有所不同分钟，但每15分钟的平均强度没有差异，并且（d）在大多数情况下，有氧运动是手球。