青年人峰值氧脉搏推算方程的建立

Establishment of the equation for calculating peak oxygen pulse rate of young people

背景:峰值氧脉搏能够反映心血管功能状态,但需要使用精密仪器在专业人员的指导下进行测量,受试者要达到力竭状态。目的:建立简单易行的心血管功能测评方法。方法:随机招募140名青年人,测量身高、体质量、体脂率、安静心率、安静血压、肺活量、腰围、臀围。受试者佩戴气体代谢分析仪在功率车上进行心肺运动试验,采集受试者达到最大运能力时的峰值氧脉搏、最大摄氧量、呼吸商、峰值心率,使用多重线性回归法建立峰值氧脉搏与身体形态、心血管功能指标之间的回归方程。结果与结论:①建立峰值氧脉搏推算方程为:峰值氧脉搏(mL/beat)=37.287-3.062×性别+0.114×体质量-0.202×安静心率-0.063×收缩压;②方差分析、拟合优度检验、Durbin-Watson、Shapiro-Wilk检验表明峰值氧脉搏推算方程的信度良好;③回代检验说明建立的方程效度较好,峰值氧脉搏实测值与预测值相比差异无显著性意义,相关性达到0.89;④此次研究使用性别、体质量、安静心率、收缩压建立了峰值氧脉搏的推算方程。

BACKGROUND:Peak oxygen pulse can reflect the state of cardiovascular function.However,it needs to be measured in the subjects who are at a state of exhaustion using precision instruments under the guidance of professionals.OBJECTIVE:To establish a simple and easy method for evaluating cardiovascular function.METHODS:Totally 140 young people were randomly recruited and their height,body mass,body fat rate,resting heart rate,resting blood pressure,vital capacity,waist circumference,and hip circumference were measured.Each subject wore a gas metabolism analyzer to perform a cardiopulmonary exercise test on an ergometry.Peak oxygen pulse,maximum oxygen uptake,respiratory quotient,and peak heart rate when the subject reached the maximum performance capacity were collected,and the multiple linear regression method was used to establish the regression equation between peak oxygen pulse and body shape and cardiovascular function indicators.RESULTS AND CONCLUSION:The peak oxygen pulse equation was established:peak oxygen pulse(mL/beat)=37.287-3.062×sex+0.114×body mass-0.202×resting heart rate-0.063×systolic blood pressure.The peak oxygen pulse equation was verified to have good reliability by analysis of variance,goodness of-fit test,Durbin-Watson test,and Shapiro-Wilk test.The back-substitution test indicated that the equation established in this study had good validity.There was no significant difference between the measured and predicted value of peak oxygen pulse,and the correlation reached 0.89.To conclude,the peak oxygen pulse equation using sex,body mass,resting heart rate,and systolic blood pressure was established in this study.