太极拳作为运动处方对肥胖学生PWC_(150)测试前后STI和血流动力学参数的影响

Effect of the Parameter in STI and Hemodynamics about Shadowboxing as the Sports Prescription to Obesity Students in PWC_(150) Test

以太极拳为运动处方,对23名肥胖在校大学生PWC150机能试验前后STI和血流动力学参数进行了测试,同运动处方实施前后对比发现,安静状态下QS2(总电机械收缩时间)、LVET(左心射血的时间)、PEP(射血前期)、SV(心博出量)、CO(心输出量)、SI(心博指数)、CI(心脏指数)、VPE(左心室有效泵力)均高于练习前,PEP LVET、HR(心率)低于练习前,经统计学检验无显著性差异,说明太极拳练习虽然对肥胖学生的心血管功能有一定的积极影响,但对受试者安静状态下整体心功能及心力储备的提高效果不明显。运动负荷后即刻QS2、LVET较练习前有所缩短,而PEP及同期测得的SV均无变化。提示太极拳锻炼后,左室射血速率的提高是受试者对运动负荷产生的良好适应,导致等量负荷状态下外周阻力减小,而非心肌收缩力增强的表现。运动后恢复期各项指标恢复速度明显快于练习前,负荷后3分钟各项指标即恢复安静状态,而练习前各指标尚处于动态变化中,显示了长期坚持太极拳锻炼有助于提高肥胖学生心血管功能对运动负荷的适应性。

Based on the sports prescription of shadowboxing,13 obesity college students by PWC_(150) were tested and the parameter of STI and Hemodynamics were obtained before and after carrying out the sports prescription.The research compares the sbject's sorts all of index characteristics under the rest,the immediateness and convalescence after the exercise in two periods of the prescription.There are three points in the comparison result:Shadowboxing,to some extent,has positive affection on cardiac reserve and left ventricle ejection,but it is not significant to improve the whole cardiac function under the quietness.The increase of left ventricle ejection speed at the immediateness after the exercise is the result of their good adaptation to exercise;In the convalescence,a great difference lies on the recovery rate of all sorts of index including the cardiac oxygen consumption in two periods.