CHANGES IN THE WORK OF THE HEART AND CENTRAL HEMODYNAMICS IN THE PERIOD OF EARLY RECOVERY AFTER STATIC PHYSICAL EXERCISE

Lukyantseva H. V., Bakunovsky O. M., Malyuga S. S., Oliinyk T. M.

PHYSIOLOGY

Scentific article

Modern directions of health-improving motor activity, such as bodybuilding, are distinguished by a powerful intensification of the duration and volume of muscle work, which can be the cause of the development of pathological changes in the activity of the heart. This, in turn, can cause fatal cases with incorrectly selected loads during training. Regular sports activities lead to specific adaptive changes in the circulatory system. This results in changes in the pumping function of the heart and the functioning of blood vessels. The purpose of the study is to analyze the characteristics of changes in heart function and central hemodynamics during the early recovery period after static physical exertion. 3 groups of young men took part in the study: bodybuilders (group 1); those engaged in fitness (group 2); untrained persons (group 3). Registration of heart activity and central hemodynamics before and after static exercise was performed using the “Cardio+” diagnostic complex (Ukraine). Compared to untrained individuals and young people engaged in fitness, bodybuilders are characterized by a greater degree of heart training, which is evidenced by a reduced level of heart rate, as well as increased values of stroke volume of blood, volume velocity of blood expulsion, minute and stroke indices work of the heart, power of the left ventricle. Static load in untrained persons and young people engaged in fitness causes a decrease in the pumping function of the heart and the minute volume of blood. Unlike them, the cardiovascular system of young bodybuilders responds to a static load by increasing the pumping capacity of the myocardium and increasing the minute volume of blood, despite even the initial slight decrease in heart rate. The smallest degree of changes in the work of the heart, greater cardiac output and strength of heart contractions indicate a significant degree of adaptation of the circulatory system to static loads in bodybuilders, compared to untrained individuals and young people engaged in fitness.

static load,cardiovascular system.

1. Franchi MV, Reeves ND, Narici MV. Skeletal muscle remodeling in response to eccentric vs. concentric loading: Morphological, molecular, and metabolic adaptations. Front Physiol. 2017;4(8):447.
2. Fluck M, Kramer M, Fitze DP, Kasper S, Franchi MV, Valdivieso P. Cellular Aspects of Muscle Specialization demonstrate genotype – phenotype interaction effects in athletes. Front Physiol. 2018;8(10):526.
3. Schoenfeld B, Grgic J. Evidence-based guidelines for resistance training volume to maximize muscle hypertrophy. Strength Cond J. 2018;40(4):107-12.
4. Vinnіchuk YuD, Polischchuk AO, Goshovska YV, Sokolova OS, Sagach VF, Drozdovska SB. Changes in biochemical parameters and mitochondrial factor in blood of amateur athletes under influence of marathon running. Fiziol Zh. 2019;65(5):20-7. [in Ukrainian].
5. Maden-Wilkinson TM, Balshaw TG, Massey GJ, Folland JP. What makes long-term resistance-trained individuals so strong? A comparison of skeletal muscle morphology, architecture, and joint mechanics. J Appl Physiol. 2020;128 (4):1000-11.
6. Longstrom JM, Colenso-Semple LM, Waddell BJ, Mastrofini G, Trexler ET, Campbell BI. Physiological, psychological and performancerelated changes following physique competition: A Case-Series. J Funct Morphol Kinesiol. 2020;5(2):27-35. 
7. Marrakchi S, Kammoun I, Bennour E, Laroussi L, Ben Miled M, Kachboura S. Inherited primary arrhythmia disorders: cardiac channelopathies and sports activity. Herz. 2020;45(2):142-57.
8. Pelliccia A, Sharma S, Gati S, Back M, Borjesson M, Caselli S, et al. Corrigendum to: 2020 ESC Guidelines on Sports Cardiology and Exercise in Patients with Cardiovascular Disease. Eur Heart J. 2021;42(5):548-9. 
9. Mont L, Pelliccia A, Sharma S, Biffi A, Borjesson M, Terradellas JB, et al. Pre-participation cardiovascular evaluation for athletic participants to prevent sudden death: position paper from the EHRA and the EACPR, branches of the ESC. Endorsed by APHRS, HRS, and SOLAECE. Eur J Prev Cardiol. 2017;24:41-69.
10. Doleeb S, Kratz A, Salter M, Thohan V. Strong muscles, weak heart: testosterone-induced cardiomyopathy. ESC Heart Fail. 2019;6(5):1000- 4.
11. Radmilovic J, D’Andrea A, D’Amato A, Tagliamonte E, Sperlongano S, Riegler L, et al. Echocardiography in Athletes in Primary Prevention of 2 Sudden Death. J Cardiovascul Echogr. 2019;29(4):139-48.
12. Fagerberg P. Negative consequences of low energy availability in natural male bodybuilding: A Review. Int J Sport Nutr Exe Metab. 2018;28(4):385-402.

«Bulletin of problems biology and medicine» Issue 4 (167), 2022 year, 353-360 pages, index UDK 796.015.6:612.824

10.29254/2077-4214-2022-4-167-353-360