桡脉和指脉脉搏传导时间在运动期和运动恢复期的变化趋势研究

Study on the Variation Trend of Pulse Wave Transit Time of Radialartery and Fingertip During Exercise and Recovery

目的本文研究了桡脉和指脉脉搏波传导时间在运动期和恢复期随R-R间期(R-R Interval,RRI)的变化情况。方法通过邀请10名身体健康受试者进行蹬车运动实验,同步采集心电信号、桡脉脉搏波信号和指端光电容积脉搏波信号,提取桡脉传导时间(radial Artery Pulse Transit Time,r-PWTT)、指脉传导时间(fingertip Pulse Wave Transit Time,f-PWTT)、桡-指脉传导时间(radial-finger Pulse Wave Transit Time,rf-PWTT)和RRI,分析上述3个脉搏波传导时间随RRI的变化情况。结果 r-PWTT和f-PWTT的变化趋势和RRI基本一致,而rf-PWTT在整个过程无明显的变化。此外,在RRI的值相同时,恢复期的r-PWTT和f-PWTT明显大于运动期的r-PWTT和f-PWTT,而rf-PWTT则不存在这种现象。结论 r-PWTT和f-PWTT与RRI有相同的变化趋势,并且相比运动前,运动后在相同RRI下r-PWTT和f-PWTT有所增加。然而蹬车运动对桡-指脉却没有明显的影响。

Objective This study aimed to research the variability of radial-artery and fingertip pulsewave transit time(rf-PWTT)during exercise and recovery.Methods Ten healthy young volunteerswere enrolled in this study to perform bicycle ergometer exercise test,with their electrocardiogram,radial artery pressure pulse waves and fingertip photo plethysmography being gathered synchronously.Parameters of radial artery pulse transit time(r-PWTT),fingertip pulse wave transit time(f-PWTT),rf-PWTT and R-R interval(RRI)were extracted,and the situations of these PWTTs change with RRI wereanalyzed.Results The results indicated that the trend of r-PWTT and f-PWTT with RRI were basicallyidentical,but rf-PWTT had no obvious trend in the process of the whole movement.Moreover,the dataalso revealed when RRI was the same on the period of exercise or recovery,r-PWTT and f-PWTT duringexercise were higher than the two PWTTs during recovery.However,rf-PWTT had no such phenomenon.There was no significant difference during exercise or recovery.Conclusion Both r-PWTT and f-PWTThad the same trend with RRI.Compared with before exercise,the r-PWTT and f-PWTT under the sameRRI increased after exercise.However,there was no significant effect of pedaling exercise on radialarteryto finger pulse.