The valve of non-invasive pressure-strain loop in evaluating left ventricular systolic function of young strength athletes with different heart rates / 中华超声影像学杂志

ABSTRACT

Objective:To explore the application value of non-invasive pressure-strain loop (PSL) in evaluating left ventricular systolic function of young strength athletes with different heart rates.Methods:Thirty-five young wrestlers were collected randomly and divided into 2 groups according to the heart rate group 1 (heart rate of 40-59 beats/min, n=20) and group 2 (heart rate of 60-80 beats/min, n=15). Thirty healthy young males were selected as the control group at the same period. Non-invasive PSL was used to obtain left ventricular global longitudinal strain (GLS), longitudinal peak strain dispersion (PSD), global myocardial work index (GWI), global constructive myocardial work (GCW), global wasted myocardial work (GWW) and global myocardial work efficiency (GWE) in three groups, and the differences between them were measured. Results:Compared with the control group, GWE in the athlete group 1 and 2 reduced, PSD, GWW were increased, and GWI, GCW in the athlete group 1 were decreased, and all differences were statistically significant (all P<0.05). Compared with the athlete group 1, PSD, GWI, GCW, GWW in the athlete group 2 increased and GWE was reduced (all P<0.05). Conclusions:PSL can quantitatively evaluate the left ventricular myocardial work of young strength athletes with different heart rates, and then assess the effect of heart rates on the left ventricular systolic function of athletes.