摘要
目的:探讨采用不同定量负荷运动持续时间对推算最大累积氧亏(MAOD)的影响。方法:以15名体育系健康男性大学生为研究对象,每位受试者均接受一次VO:max测试、5次不同强度(25%、40%、55%、70%、85%VOm2ax)定量负荷运动、一次2~3min强度为120%VO2max的超大强度运动测试。结果:当定量负荷运动持续时间少于4min时,VO2一运动强度回归曲线斜率、ETED、MAOD均与Medbo确定的10min持续时间所获值差异显著(P〈0.01),而持续时间在4min以上时,虽然各值小于10min持续时间所获值,但差异不显著。结论:定量负荷运动持续时间少于4min会降低MAOD值,为简化实验过程,可将运动持续时间缩短到4~6min。
Objective To examine the effect of different exercise durations on the calculated accu- mulated O2 deficit (MAOD). Methods Fifteen healthy male volunteers participated in this study. They were asked to perform 5 × 10min submaximal exercise bouts (with intensities of 25%,40%,55%, 70%,85%VO2max) and a supramaximal exercise bout on bicycle at 120% of VO2max for 132.2±33.6s to exhaustion. The O2 uptake was measured at 2-4,4-6,6-8 and 8-10min of the test at the five different constant powers. Results MAOD calculated from 2-4min exercises (35.8±4.0ml·kg^-1 · min^-1) were significantly lower than the value calculated from longer than 8-10min of exercise (44.3±2.4 ml/kg/min). Conclusions For simplifying testing procedure, submaximal exercise duration can be shortened to 4-6min.
出处
《中国运动医学杂志》
CAS
CSCD
北大核心
2007年第5期560-562,600,共4页
Chinese Journal of Sports Medicine
关键词
最大累积氧亏
定量负荷运动持续时间
无氧代谢能力
maximal accumulated oxygen de[icit (MAOD), submaximal exercise, anaerobic met-abolic capacity