Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): This research was supported by FMBA of Russia Background. There are still very limited data about physiological cardiac adaptation in strength athletes. Purpose. To describe structural and functional features of left ventricular (LV) in a large cohort of healthy strength athletes. Methods. A total of 673 Caucasian athletes (weight-lifting, males/females = 238/157, and Martial Arts, males/females = 200/78) competing in Russian National and International level events were recruited within 2010-2017. Data of standard 2D echocardiography (Echo) and comprehensive medical history were analyzed. Data are presented as median (IQR) and compared by nonparametric tests (table). To assess LV geometry all athletes were divided into 6 groups according to 4-tiered classification based on mass index, concentricity and end-diastolic volume (EDV) index of LV (Figure). Results. Both absolute and indexed values of LV structural features were higher in males. Females exhibited higher functional parameters. Only 54 (8%) athletes had elevated LV mass (no sex difference), 23 (3.4%) – LV wall ≥ 12mm (only males) and 78 (11.6%) – changes in LV geometry. There was a prevalence of females in eccentric non-dilated LV hypertrophy (LVH) group (p = 0.088), which was previously accepted as a benign pattern of LV remodelling in non-athlete populations. Males had more often concentric types of LV remodelling (36 of 54 athletes). Among dilated types of LVH, there was a prevalence of males (p = 0.070). Conclusions. LV remodelling is not common in strength athletes and differs by sex with a more favourable profile in females. Clinical and Echo parameters Total n = 673 males n = 438 females n = 235 males vs females p-value Age, years 20(4) 20(4) 20(5) 0.06 BSA, m² 1.84(0.39) 1.96(0.39) 1.66(0.25) <0.001 Sports practice, years 10(6) 10(7) 10(6) 0.12 LV EDD, mm 49(6) 50(5) 46(4) <0.001 LV EDD/(BSA)^0.5 35.8(3) 35.9(3) 35.6(3) 0.017 LV EDV, ml 108(38) 118(32) 92(24) <0.001 LV EDV/(BSA)^1.5 42.8(9) 42.9(10) 42.3(9) 0.14 Maximal LV WT, mm 10(1) 10(2) 9(1) <0.001 LV mass/BSA, g/m² 86(24) 91(22) 75(16) <0.001 LV Concentricity, g/(ml)^0.67 6.9(1.6) 7.4(1.6) 6.2(1.4) <0.001 LV EF, % 60(5) 60(4) 62(4) <0.001 Mitral E velocity, cm/sec 87(19) 85(19) 89(19) <0.001 BSA - body surface area; EDD - end-diastolic dimension; WT - wall thickness Abstract Figure. Types of LV geometry in athletes
Objective: To study the effect of intense physical exertion on the normal physiology of the left ventricle (LV).Material and Methods. 146 professional athletes underwent a non-invasive assessment of LV systolic deformity in various directions. As a control group, 22 bowling athletes were surveyed.Results. In cyclists, eccentric hypertrophy of the LV myocardium was detected in 31.7% of men and in 29.5% of women. The values of global longitudinal strain were below 18% in male athletes from the cycling-BMX and cycling-highway groups (17.70±2.40% and 17.50±2.39%, respectively). Indicators of circular apical and circular global deformation were significantly lower in the group of cycling-BMX (men) compared with the corresponding values in the bowling group (14.50±6.23% and 14.70±6.42%; 18.40±6.32% and 16.90±6.43%, respectively, p<0.01).
Aim. To determine the structural and functional characteristics of the myocardium in young people with different levels of physical activity (PA).Material and methods. The study included 108 young people without cardiovascular diseases. Seventy-two people were professional endurance athletes (Group A) and 36 were non-athletes (Group non-A). Anthropometric data were evaluated. Transthoracic echocardiography and assessment of left ventricular (LV) longitudinal, radial and circumferential strain, as well as LV twisting, were performed. PA level in non-A group was determined using International Physical Activity Questionnaire (IPAQ).Results. PA level <600 MET-min/week was revealed in 22,3% of participants, moderate PA (from 600 to 1500 MET-min/week) — in 41,7%, and high (3000 MET-min/week) — in 36% of participants of inactive, moderately active and highly active subgroups, respectively. Group A daily PA level was ~15000 MET-min/week. In non-A group, there were no significant differences in echocardiographic parameters in subgroups with different PA levels. Significant differences with group A were revealed. LV diastolic function was within the normal range in all subgroups. The E/A ratio was higher in subgroups with higher PA (maximum in subgroup A). Significant differences were observed between inactive (p=0,027) and athletes/moderately active (p=0,017) subgroups. Longitudinal, radial and circular strain characteristics did not differ in A and non-A groups and were within normal range.Conclusion. In young people without cardiovascular diseases with PA ranges from extremely low to those recommended by WHO, the structural and functional myocardial characteristics were within age normal range and significantly differed from those of professional athletes. In professional athletes, these parameters also remained within the age normal range. Myocardial strain characteristics were within the normal range in all participants
Objective: To study the effect of intense physical exertion on the normal physiology of the left ventricle (LV).Material and Methods. 146 professional athletes underwent a non-invasive assessment of LV systolic deformity in various directions. As a control group, 22 bowling athletes were surveyed.Results. In cyclists, eccentric hypertrophy of the LV myocardium was detected in 31.7% of men and in 29.5% of women. The values of global longitudinal strain were below 18% in male athletes from the cycling-BMX and cycling-highway groups (17.70±2.40% and 17.50±2.39%, respectively). Indicators of circular apical and circular global deformation were significantly lower in the group of cycling-BMX (men) compared with the corresponding values in the bowling group (14.50±6.23% and 14.70±6.42%; 18.40±6.32% and 16.90±6.43%, respectively, p<0.01).
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