健康青少年心肺运动功能的比较

Difference of cardiopulmonary exercise testings between normal subjects of youth and early youth

目的 观测青少年不同年龄段心肺运动功能。方法 选择健康青年组 2 0名 ,健康少年组 2 0名 ,进行心肺运动试验。通过电脑处理系统在规定的负荷、时间下有计划地测量和记录受试者的心肺资料。结果 在完成运动最大负荷时 ,青年组与少年组比较最快心率 (HRmax)差异无显著性 [(172± 18)比 (180± 9)次 / m in,P>0 .0 5 ];心排指数 (CI)和最大公斤氧耗量 (VO2 max)差异有显著性 [(4 .0± 0 .9)比 (4 .5± 1.2 ) L· m- 2 · m in- 1 ,P<0 .0 5 ];[(5 3± 18)比 (6 9± 16 ) m L· min- 1· kg- 1 ,P<0 .0 5 ];在运动达到无氧阈时 ,青年组与少年组比较氧耗量(ATVO2 )差异无显著性 [(2 6± 5 )比 (2 9± 4) m L· m in- 1 · kg- 1 ,P>0 .0 5 ]。结论 少年组运动耐力和心肺储备功能已达到或超过青年组。

Objective To examine the changes of cardiopulmonary exercise testings between youth subjects and early youth subjects.Methods Twenty cases of youth group and 20 cases of early youth group received cardiopulmonary exercise testing.Cardiopulmonary data of the subjects at a certain load and time were determined and recorded by computer system.Results The results between youth group and early youth group were without significant variance in heart rate (HR max ) [(172±18) vs (180±9) beat/min,P>0.05], but with significant variance in cardic index ( CI ) and peak oxygen uptake (VO 2max ) [( 4.0±0.9 ) vs (4.5±1.2) L·m -2 ·min -1 ,P<0.05];[(53±18) vs ( 69±16 ) mL·min -1 ·kg -1 , P<0.05 ] at extreme exercise;there is no significant variance in VO 2 at anaerobic threshold [( 26±5 ) vs (29±4) mL·min -1 ·kg -1 ,P>0.05].Conclusion The tolerance and reserve function of heart and lung in early youth group are up to or even higher than those in youth group.