摘要
采用实验室递增负荷运动试验和运动现场血乳酸的测定,研究了高原(2260m)女子公路自行车运动员的通气无氧阈、乳酸阈及最大氧耗量。结果发现,通气无氧阈时的氧耗量为2.03l/min,功率为131.4W;乳酸阈(以运动速度表示)为33.0km/h。通气无氧阈时对应的心率(137次/min)低于乳酸阈的心率(153次/min)。最大氧耗量的绝对值(2.8l/min)和相对值(47.4ml/kg.min)分别比平原运动员低22.2%和22.9%,但与平原运动员高原训练期间的测试值(2.8l/min)比较,高原与平原运动员最大氧耗量的差异消失。在相同氧耗量(2.8l/min)条件下运动时,高原运动员完成的功率(251W)低于平原运动员(274W)。
The ventilation anaerobic threshold (VAT), lactate threshold (LT) and maximal oxygen uptake (O 2 max) of highland (2260m) women road cyclists were studied by progressive exercise test on a bicycle ergometer and determining blood lactate on the spot. The results showed that on VAT, the VO 2 was 2.03 l/min, and the power was 131.4W; LT( express in sports speed )was 33.0 km/h. The HR at VAT was 137beats/min lower than that at LT (153 beats/min ). O 2 max of highland women road cyclists was 2.8 l/min or 47.4 ml/kg·min which was 22.2% or 22.9% lower than that in plain women road cyclists (3.6 l/min or 65.1 ml/kg. min, P <0.01). But there was no difference between highland women road cyclists and plain women road cyclists during altitude (2260m) training. Maximal power of highland women road cyclists (251W) was also lower than that of plain women road cyclists (274W) in the same O 2 max (2.8 l/min) exercise.
出处
《中国应用生理学杂志》
CSCD
1996年第3期247-249,共3页
Chinese Journal of Applied Physiology
关键词
公路自行车运动
通气无氧阈
乳酸阈
最大氧耗量
ventilation anaerobic threshold
lactate threshold
maximal oxygen uptake
woman road cyclist
highland