运动后乳酸清除率与运动能力的关系

测定中跑运动员、足球运动员和常人在800m全力跑后的血乳酸浓度、乳酸清除率和心率恢复率，研究无氧运动能力与最高乳酸值、心率恢复率与乳酸清除率之间的关系。结果发现：运动员的无氧耐力成绩和运动后5min血乳酸值呈显著负相关；中跑运动员较足球运动员和常人有更强的产生乳酸能力和更高的乳酸清除率；心率的恢复速度较乳酸清除率更快。说明良好的产生乳酸能力是无氧耐力成绩的重要因素，良好的乳酸清除率有利于乳酸的清除和运动后的恢复，同时运动后的心率恢复率并不能反映体内乳酸的清除情况。

Relationships between Post-exercise Lactic Acid Clearance Rate and Exercise Performance

In order to study the relationships between the anaerobic capacity and maximum lactate value, heart rate (HR) recovery rate and lactic acid (LA) clearance rate, this study measured the blood lactic acid (BLA) concentration, LA clearance rate and HR recovery rate of middle-distance runners, footballers and normal persons after an endeavored 800m running. The results show that the athletes' anaerobic capacity assessed by 800m running is significantly negatively related to BLA value at 5th minute after exercise, middle-distance runners have stronger lactate-producing capacity and higher LA clearance rate than footballers and normal persons, and their HR recovery velocity is faster than LA clearance rate. All these indicate that good lactate-producing capacity is an important factor that can directly influence anaerobic endurance performance, high LA clearance rate is good for the clearance of lactate and recovery after exercise, but post-exercise HR recovery rate can't reflect the clearance of lactate in the body.