Applicability of exercise cardiopulmonary exercise tests in exercise endurance evaluation of pilots with reduced left ventricular diastolic function
LI Xue
HUANG Wei
GUO Jiansheng
LIU Yong
FENG Wei
WANG Qingju
WU Qi
FEI Xiangwu
BU Xiaohui
LIANG Jialin
YOU Danli
SUN Yuanyuan
XU Jianhua
Abstract：Objective To explore the changes and significance of exercise cardiopulmonary indexes of pilots with reduced left ventricular diastolic function.Methods Thirty pilots with reduced left ventricular diastolic function were selected as the study group while another 30 healthy pilots served as the control group.Both groups underwent exercise cardiopulmonary function tests.The indexes of echocardiography in the resting state as well as the maximum exercise power,respiratory reserve,stroke output,post-exercise recovery heart rate,maximum kilogram oxygen uptake,estimated maximum oxygen uptake,metabolic equivalent,peak heart rate and oxygen pulse in exercise cardiopulmonary function tests were recorded.Results There were statistically significant differences in maximum motion power,respiratory reserve,stroke volume,rates of heart rate recovery two minutes and three minutes after exercise between the two groups(t=2.019～3.740,all P＜0.05).The maximum kilogram oxygen uptake was positively correlated with the rate of heart rate recovery two minutes and three minutes after exercise(r=0.558,0.457,P=0.001,0.011).The case was the same with the left ventricular end diastolic diameter,left atrial anterior posterior diameter,left ventricular ejection fraction,and Tei index(t=3.179～9.617,P=0.002 or＜0.001).Conclusion Pilots with reduced left ventricular diastolic function may be vulnerable to changes in exercise cardiopulmonary function and to abnormal regulation of the autonomic nervous system in the early stage.The rate of heart rate recovery two and three minutes after exercise can reflect the ability of autonomic nerves for regulation and aerobic exercise,which can be used to serve pilots'physical training and prescriptions for exercise.
Keywords：Cardiopulmonary exercise testDecreased left ventricular diastolic functionHeart rate recovery after exercisePilots
Publication Date：2025-08-25
Online Publishing Date：2025-09-28(First online date of this platform, not the publication date of the document)
Pages：4( 301-304 )