Myocardial Oxygenation Response to Stress Performing a Single-set Compared to Volume-Matched Multiple-Set of Leg Press in Untrained Young Adults

作     者：Junhai Xu Arnold G.Nelson James J.Tufano Juntao Wang 

作者机构：School of KinesiologyLouisiana State UniversityBaton RougeLouisianaUSA Faculty of Physical Education and SportCharles UniversityPragueCzech Republic School of Sport Economic and ManagementCentral University of Finance&EconomicsBeijingP.R.China 

出 版 物：《Journal of Science in Sport and Exercise》 (体育运动科学（英文）)

年 卷 期：2023年第5卷第2期

页      面：174-181页

核心收录：

学科分类：0403[教育学-体育学] 040302[教育学-运动人体科学(可授教育学、理学、医学学位)] 04[教育学] 

基　　金：Not applicable 

主　　题：Myocardial oxygen consumption Rate pressure product Heart rate Systolic blood pressure Resistance exercise 

摘      要：Background Debates exist about the preference for single-or multiple-set resistance exercise(RE)on achieving similar training outcome,however,no study examined their effects on the heart,thus,this study was to examine the effect of volume-matched single-and multiple-set RE on the myocardial response through examining rate pressure product(RPP).Methods Fourteen healthy untrained college students performed two leg press exercises(4×10 and 1×40 at 150%body mass)on different days,and each was performed twice in a counterbalanced crossover ***-and post-exercise SBP and HR were measured by auscultatory method,RPP was calculated as SBP×HR×10^(-3),RPP difference(RPPdiff)was calcu-lated by post-exercise RPP subtracting pre-exercise *** Single-set post-exercise RPP(17.48±3.16 mmHg·beats/min),HR(123.86±20.25 beats/min)was significantly greater than multiple-set post-exercise RPP(13.66±3.04 mmHg·beats/min),HR(101.61±19.14 beats/min),*** was no significant difference of SBP(141.07±9.37 vs.134.29±15.16 mmHg)between exercise protocols(P=0.13).The RPPdiff of single-set(6.74±2.86 mmHg·beats/min)was significantly greater than that of multiple-set(3.62±2.90 mmHg·beats/min)(P0.001).Conclusions Single-set RE exerts a greater myocardial oxygenation response as compared to multiple-set,HR contributed more than SBP to the increase of RPP in *** results indicate that single-set RE can be warranted when wanting to train the heart,while multiple-set RE would appear best for those who should avoid heart stress.