Effect of different exercises on the left ventricle function during orthostatic tolerance test
10.3760/cma.j.issn.1007-6239.2017.01.009
- VernacularTitle:不同锻炼方案对健康男性立位耐力测试中左心室功能的影响
- Author:
Ping ZHENG
1
;
Bing REN
;
Xiaochun ZHOU
;
Shujuan LIU
;
Zhang CHEN
;
Huijuan WANG
;
Hongmei LI
;
Linjie WANG
Author Information
1. 航天城门诊部,北京,100094
- Publication Type:Journal Article
- Keywords:
Ventricular function,left;
Echocardiography,Doppler;
Physical endurance;
Exercise movement techniques;
Tei index
- From:
Chinese Journal of Aerospace Medicine
2017;28(1):36-41
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the effect of different exercises on left ventricle function by echocardiography in orthostatic tolerance test.Methods Twenty-five healthy males were assigned to 3 groups by the registration order.Two groups underwent high-intensity interval exercises (HIT):sprint group (n =8) took 10 s-running with full power for 8 times with 30 s interval,and high-intensive aerobic group (n=9,4 × 4 exercise group) took 4 min-running with 85 ％ maximal oxygen consumption for 4 times with 3 min interval.One group underwent continuous exercises:continuous group (n=8) ran with 80％ maximal oxygen consumption for 30 min.All groups did exercises 3 times/week for 8 weeks.Their echocardiography was monitored in the orthostatic tolerance test respectively under lain low,instant vertical tilt and 15 min continued tilt conditions before and after the 8 weeks-exercise.Parameters analyzed included the ratio of mitral annular early diastolic velocity and mitral annular late diastolic velocity (E/A),mitral annular early velocity and late velocity (E'/A') and E/E'at mitral septal level.TDI-Tei was obtained by tissue Doppler imaging.Results All ultrasonic images of 20 healthy males were good enough for analysis.The E'/A'of the sprint group in instant vertical tilt test was higher after the exercise than that before the exercise (1.81±0.17 vs 1.22± 0.18,P=0.009) and E'/A'＜2.0.The TDITei of the 4 × 4 exercise group in instant vertical tilt test was significantly decreased after the exercise than that before the exercise (0.55 ± 0.09 vs 1.07 ± 0.20,P=0.041),and their E/E'in 15 min continued tilt test was significantly decreased than that before the exercise (7.22±0.63 vs 9.05±0.43,P=0.037).The E/A of the continuous group in lain low test was higher before exercise than that after exercise (2.28±0.22 vs 1.93±0.17,P=0.034),and their E/E'was significantly decreased than that before the exercise (5.81± 0.61 vs 7.01 ± 0.49,P=0.044).Conclusions Both continuous and HIT exercises improve the diastolic function of left ventricle to a certain degree,and HIT has more effects on the function improvement in the instant and the process of orthostatic tolerance test.The style of 4 × 4 exercise improves the TDI-Tei of left ventricle function.
