摘要
2 0名运动员及 15名普通大学生志愿受试者在功率自行车上做递增负荷运动直至疲劳。用运动心力监测仪在记录受试者运动每个阶段的第一心音幅值 ,把它相对于安静时幅值增加的相应倍数定义为心力变化趋势 (Cardiac Contractility Change Trend,CCCT) ,并用运动心肺功能仪同时记录其摄氧量和心率 ,探讨运动员及普通大学生在运动及恢复状态下心肌收缩力变化趋势与摄氧量和心率的相关性。结果表明 ,受试者在运动及恢复阶段的心肌收缩力与摄氧量(r=0 .5 89～ 0 .978)和心率 (r=0 .739～ 0 .986 )的变化趋势之间存在着高度相关。提示 ,心力变化趋势指标可以作为运动员和常人临床测定心肺功能的重要指标之一 。
athletes and 15 ordinary college students were randomly selected as the subjects.They performed on Monak 839 E Computerized Ergometer with increasing loads till fatigue.Their peak heart rate and O 2 was got at same time.The exercise cardiac contractility monitor was put into use to detect the amplitude of first heart sound of subject during different exercise stage.With respect to the amplitude of first sound recorded at rest was defined as cardiac contractility change trend.The MAXII exercise cardiopulmonary function monitor and polar heart rate monitor were applied to test the oxygen uptake and heart rate.The main purpose is to discuss the correlation among cardiac contractility change trend,oxygen uptake and heart rate of athletes and ordinary college students during exercise and recovery.The result showed that cardiac contractility change trend was significantly correlated with heart rate (r=0.739～(0.986)) and oxygen uptake (r=0.589～0.978) during exercise and recovery.It suggested that cardiac contractility change trend could be used to measure cardiopulmonary function of athletes and ordinary people,and provide basis for sports medicine and clinical practice.
出处
《体育科学》
CSSCI
北大核心
2004年第10期35-37,共3页
China Sport Science
基金
国家自然科学基金资助项目 (3 0 0 2 70 3 77)
四川省体育局科研基金资助 (0 3 STK2 0 )
关键词
心力储备
摄氧量
心率
监测
cardiac reserve
oxygen uptake
heart rate
monitor
