Gupta S, Goswami A, Mukhopadhyay S
SAIL, Rourkela Steel Plant (OHSC), Orissa.
Indian J Physiol Pharmacol. 1999 Jul;43(3):361-6.
This study was conducted on a group of male sprinters (n = 8) to compare heart rate (HR) and blood lactate (La) response in 400 m flat and 400 m hurdle running during weekly trial race. Durations of the flat and hurdle races were 51.65 +/- 1.51 and 58.27 +/- 1.97 sec respectively. Peak HR attained at the end of the flat and hurdle races were 192.4 +/- 5.3 and 193.6 +/- 4.1 beats/min, whereas, average HR during the events were 173.6 +/- 22.6 and 176.7 +/- 19.6 beats/min respectively. La level following the flat event (18.84 +/- 1.57 mmol/L) was found significantly (P < 0.05) higher than the post-hurdle race (16.14 +/- 1.97 mmol/L). The study indicates that cardiovascular stress is similar in both the events although flat race impose higher anaerobic glycolytic demand than hurdle run.
本研究对一组男性短跑运动员（n = 8）进行，以比较他们在每周的测试赛中400米平地跑和400米跨栏跑时的心率（HR）和血乳酸（La）反应。平地跑和跨栏跑的持续时间分别为51.65±1.51秒和58.27±1.97秒。平地跑和跨栏跑结束时达到的最高心率分别为192.4±5.3次/分钟和193.6±4.1次/分钟，而比赛期间的平均心率分别为173.6±22.6次/分钟和176.7±19.6次/分钟。发现平地跑后血乳酸水平（18.84±1.57毫摩尔/升）显著高于跨栏跑后（16.14±1.97毫摩尔/升）（P < 0.05）。该研究表明，尽管平地跑比跨栏跑施加更高的无氧糖酵解需求，但两项赛事中的心血管压力相似。
