Home  About Journal Instructions for Authors Editorial Board Subscribe Advertisement Messages Board Contact Us 中文

CJAP ›› 2021, Vol. 37 ›› Issue (2): 120-124.doi: 10.12047/j.cjap.0084.2021.114

• ORIGINAL ARTICLES • Previous Articles     Next Articles

Effect of different work rate increasing rate on the overall function evaluation of cardiopulmonary exercise testing II— sub-peak parameters

HAO Lu1,2, SUN Xing-guo1,3△, SONG Ya1,3, LIU Fang1, TAI Wen-qi1, GE Wan-gang1, LI Hao1, ZHANG Ye, CHEN Rong, 1, ZOU Yu-xin, 1,5, MA Ming-xin, 1,4, XIA Rui, 1, HUANG Yan1,4, XIE You-hong3   

  1. 1. Fuwai Hospital,Chinese Academy of Medical Sciences/National Center for Cardiovascular Diseases/ State Key Laboratory of Cardiovascular Diseases/Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing 100037;
    2. Henan Provincial People's Hospital,Henan 450003;
    3. The Affiliated Rehabilitation Hospital of Chongqing Medical University, Chongqing 400050;
    4. Dalian Children's Hospital,Dalian 116000;
    5. Liaocheng People's Hospital, Liaocheng 252000, China
  • Received:2020-08-12 Revised:2021-03-15 Online:2021-03-28 Published:2021-10-20

Abstract: Objective: To observe the effect of healthy volunteers different work rate increasing rate cardiopulmonary exercise testing (CPET) on the sub-peak parameters . Methods: Twelve healthy volunteers were randomly assigned to a moderate (30 W/min), a relatively low (10 W/min) and relatively high (60 W/min) three different work rate increasing rate CPET on different working days in a week. The core indicators related to CPET sub-peak exercise of 12 volunteers were compared according to standard Methods: anaerobic threshold (AT), oxygen uptake per unit power (ΔVO2/ΔWR), oxygen uptake eficiency plateau,(OUEP), the lowest average of 90 s of carbon dioxide ventilation equivalent (Lowest VE/ VCO2), the slope of carbon dioxide ventilation equivalent (VE/ VCO2 Slope) and intercept and anaerobic threshold oxygen uptake ventilation efficiency value (VO2/ VE@AT) and the anaerobic threshold carbon dioxide ventilation equivalent value (VE/ VCO2@AT). Paired t test was performed on the difference of each parameter in the three groups of different work rate increasing rate. Results: Compared with the relatively low and relatively high work rate increasing rate group, the moderate work rate increasing rate group uptake eficiency plateau, (42.22±4.76 vs 39.54±3.30 vs 39.29±4.29) and the lowest average of 90 s of carbon dioxide ventilation equivalent (24.13±2.88 vs 25.60±2.08 vs 26.06±3.05) was significantly better, and the difference was statistically significant (P<0.05); Compared with the moderate work rate increasing rate group, the oxygen uptake per unit work rate of the relatively low and relatively high work rate increasing rate group increased and decreased significantly ((8.45±0.66 vs 10.04±0.58 vs 7.16±0.60) ml/(min·kg)), difference of which was statistically significant (P<0.05); the anaerobic threshold did not change significantly ((0.87±0.19 vs 0.87±0.19 vs 0.89±0.19) L/min), the difference was not statistically significant (P>0.05). Conclusion: Relatively low and relatively high power increase rate can significantly change the CPET sub-peak sports related indicators such as the effectiveness of oxygen uptake ventilation, the effectiveness of carbon dioxide exhaust ventilation, and the oxygen uptake per unit work rate. Compared with the moderate work rate increasing rate CPET, the lower and higher work rate increasing rate significantly reduces the effectiveness of oxygen uptake ventilation and the effectiveness of carbon dioxide exhaust ventilation in healthy individuals. The standardized operation of CPET requires the selection of a work rate increasing rate suitable for the subject, so that the CPET sub-peak related indicators can best reflect the true functional state of the subject.

Key words: cardiopulmonary exercise test, work rate increasing rate, sub-peak exercise related indicators, ventilation efficiency

CLC Number: 

Copyright © 2015 CJAP, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd