Abbreviation Single

Single contraction (S.) is a physiological process that occurs in response to the impact of a single stimulus on the body. It consists of two phases: a contraction phase and a relaxation phase. During the contraction phase, the muscles contract, resulting in increased strength and tension. This is followed by a relaxation phase in which the muscles return to their original state.

S. can be caused by various stimuli, such as sound, light, smell or touch. For example, when the sound of a hammer hits, the muscles that are responsible for moving the hand contract. In this case, the muscles relax after the impact, which allows the hand to return to its original position.

Single contraction is important for our life. It allows us to respond to external stimuli and adapt to environmental changes. In addition, S. plays an important role in sports and physical activity, where it helps improve coordination and increase endurance.

However, too frequent or intense exposure to single stimuli can lead to fatigue and muscle strain. Therefore, it is important to maintain a balance between stimulation and rest. It is also necessary to take into account the individual characteristics of the body and not overload it with excessive loads.

In general, single contraction is an important mechanism for our body’s adaptation to the environment. It allows us to quickly respond to changes and maintain our functionality for a long time. However, in order to avoid overexertion and maintain health, it is necessary to take into account the characteristics of your body and correctly dose the impact of single stimuli.

The problem of maintaining normal cardiomyocyte function, responsible for heart failure, is a major problem in modern medicine. One of the main causes of heart failure is coronary heart disease, characterized by impaired blood supply to the myocardium. Ensuring sufficient physical activity and a healthy lifestyle plays an important role in preventing the development of cardiovascular diseases. However, there is a group of people who, for various reasons, cannot maintain a normal level of physical activity.

Uneven contraction of the left ventricle (LV) and the appearance of periods of relaxation causes blood to reflux into the aorta, which is reflected by the appearance of systolic murmur and a decrease in stroke volume. At rest, due to uneven shortening of the heart fibers, ventricular concussion occurs, and blood flow in the LV becomes turbulent. The rhythm of cardiac activity can change during ventricular systole in the direction of reducing blood flow into the vessels of the brain and gastrointestinal tract. As a result, ischemia develops, leading to myocardial damage, activation of apoptosis processes, and inhibition of the recovery process of the heart muscle. Subsequently, this leads to irreversible consequences of a process such as heart failure. Therefore, the main goals of prevention and rehabilitation of patients with LVH are the systematic increase in the functional capacity of the cardiovascular system and its adaptation to changed conditions after myocardial infarction (MI). The amount of load on the patient’s body should be determined by his clinical condition and the presence of concomitant pathology. These recommendations are based on data from most studies with key concepts - “relevance”, “compliance with modern trends”, “quality, evidence, accessibility” of publications. Based on the analysis of all available documents, criteria for assessing the effectiveness of treatment were identified