女子曲棍球运动员在不同负荷状态下心缩间期的变化

摘要

Using MCA-3C heart function information instrumentation, the influences of movement training on heart's tension-contraction speed and left ventricle function of the female hockey athletes are discussed. To take the general female university students (control group, n = 9), the sports education specialized female university student(sports education group, n=9) and the female hockey team athletes (women hockey team group,n= 9)as the object of study, under peaceful condition and different load condition, the biochemical indexs on systolic time interval(STI) are measured. Results demonstrate that the training may improve the trainer's heart function at rest through cutting the heart rate, lengthening LVET, reducing ICT and lengthening MST. The training may improve the trainer's heart function at different intensity movement through reduceing the HR increase rate, lengthening LVET, reducing lowintensity and the medium-intensity ICT, maintaining ICT stability when the high-intensity movement.The training can accelerate the trainer's HR restores, maintaining MST and EML stability, so it has the good function in recovery period.%利用MCA-3C心脏功能信息检测仪,探讨运动训练对心脏的张力-收缩速度及左心室功能的影响.以普通专业女大学生(对照组,n=9)、体育教育专业女大学生(体教组,n=9)和女子曲棍球队运动员(女曲组,n=9)为研究对象,测量其安静状态及40 W,80 W和120 W负荷蹬车3 min(转速为60 r/min)结束即刻、120 W恢复期第5 min和第10 min的心缩间期(STI)各项指标.结果表明,运动训练可改善训练者安静时心脏功能,通过降低HR,延长LVET,缩短ICT,延长MST来实现;运动训练可改善训练者运动时心脏功能,通过降低运动时HR上升幅度,延长LVET,缩短小强度及中等强度运动时ICT,维持大强度运动时ICT不再继续缩短来实现;运动训练对加速训练者运动后HR恢复,维持运动后恢复期MST及EML稳定具有良好的作用.