Physical inactivity and its impact on the human body
Physical inactivity and its impact on the human body
Dojlido A. I. Cand. honey. Sciences, associate Professor
Komar, E. B., assistant
The decline of physical activity in the conditions of modern life, on the one hand, and the insufficient development of mass forms of physical culture among the population, on the other hand, lead to deterioration of various functions and the emergence of adverse conditions of the human body.
To ensure normal functioning of the human body needs sufficient activity in skeletal muscle. The work of the muscular system contributes to the development of the brain and the establishment of inter-Central and intersensory relationships. Motor activity increases the production capacity and heat generation, improves the functioning of respiratory, cardiovascular and other body systems.
Scientific evidence suggests that most people in the observance of hygienic rules and maintaining a healthy lifestyle has the opportunity to live to 100 years or more.
Unfortunately, many people do not follow the simplest, science justified norms of a healthy lifestyle. The past years due to high stress at work and at home and other reasons of the majority a shortage in the mode of the day, insufficient physical activity, contributing to the emergence of hypokinesia, which can cause some serious changes in humans.
Hypokinesia – decreased motor activity. It may be associated with physiological immaturity of the organism, with special conditions of work in a confined space, with some diseases and other causes. In some cases a cast, bed rest) can be a complete lack of movement or akinesia, which is tolerated by the body even harder.
Exists and is close to the notion of physical inactivity. This decrease muscular effort. when motions are made, but at extremely low loads on the muscular system. In both cases, skeletal muscle Laden is totally inadequate. There is a huge shortage of biological needs in the movements. which drastically reduces the functional state and performance of the body.
The most resistant to the development geodinamicheskih signs of antigravity muscles (neck, back). Stomach muscles will atrophy relatively quickly, adversely affecting the functions of the circulatory, respiratory, digestive. This atrophic changes in the muscles, overall physical de-conditioning, de-conditioning of the cardiovascular system, lowering orthostatic stability, change of water-salt balance, blood system, bone demineralization, etc. Ultimately decreases the functional activity of organs and systems, disrupted the activities of the regulatory mechanisms that ensure their relationship deteriorates resistance to various adverse factors; decreases the intensity and volume of afferent information associated with muscle contractions, disturbed coordination of movements, reduced muscle tone (tension), decreases endurance and power performance.
In physical inactivity decreases the force of heart contractions due to the decrease in venous return to the Atria, reduced minute volume, the mass of the heart and its energy potential, a weakened heart muscle, decreases the number of circulating blood in connection with the depositing her at the depot and capillaries. The tone of the arterial and venous vessels is reduced, blood pressure drops, worsening the supply of oxygen to tissues (hypoxia) and the intensity of metabolic processes (disturbances in the balance of proteins, fats, carbohydrates, water and salt).
Decreases lung capacity and pulmonary ventilation, the intensity of gas exchange. All this weakening of the relationship of motor and autonomic functions, inadequate neuromuscular stress. Thus, during inactivity in the body creates a situation fraught with “emergency” consequences for his life. If you add to that the lack of systematic physical exercises associated with negative changes in the activity of the higher parts of the brain, subcortical structures and formations, it becomes clear why a reduction in overall body defenses and there is fatigue, disturbed sleep, reduced ability to maintain high mental and physical performance.
The consequences of physical inactivity. In ancient times it was noticed that physical activity contributes to the formation of a strong and hardy man, and immobility also leads to reduced efficiency, illness and obesity. All this happens because of metabolic disorders. Reduction of energy metabolism associated with changes in the intensity of the decay and oxidation of organic matter, leads to disruption of the biosynthesis, as well as to changes in calcium metabolism in the body. Consequently, the bone is undergoing profound changes. First of all, they start to lose calcium. This leads to the fact that the bone is loose, less strong. Calcium enters the bloodstream, is deposited on the walls of blood vessels, they sclerosis, i.e. impregnated with calcium, lose their elasticity and become brittle. The ability of blood to clot increases dramatically. There is a threat of blood clots (blood clots) in blood vessels. A large amount of calcium in the blood contributes to the formation of kidney stones.
The lack of muscular load reduces the intensity of energy metabolism, which affects skeletal and cardiac muscles. In addition, a small number of nerve impulses coming from the working muscles, reduces the tone of the nervous system are lost previously acquired skills, not regenerated. All of that has a negative impact on health. You should also consider the following. A sedentary lifestyle leads to the fact that the cartilage gradually becomes less elastic and loses its flexibility. This can lead to a decrease in the amplitude of respiratory movements and loss of flexibility of the body. But especially strongly from immobility or low mobility of the joints suffer.
Discovered that with age, physical activity (YES) has a decreasing tendency, especially pronounced in girls.
The nature of movement in the joint is defined by its structure. In the knee joint leg can only bend and straighten, somewhat bronirovat and supererogate, and in the hip joint movement can occur in all directions. However, the range of motion depends on the workout. The lack of mobility of the ligaments lose their elasticity. In the joint cavity when driving there is an insufficient amount of synovial fluid, which plays the role of lubricant. All this complicates the work of the joint. Insufficient load affects the circulation in the joint. As a result, the nutrition of the bone tissue is broken, the formation of the articular cartilage covering the head and socket articulated bones, and the bone goes wrong, which leads to various diseases. But it is not limited to this. Poor circulation can lead to uneven bone growth, resulting in the loosening of some sections and the other seal. The shape of the bones as a result of this may be incorrect, and the joints lose mobility.
Physical movements have a positive effect on the body and cause changes on the part of all organs and systems, increasing their functionality. The physical activity of people significantly strengthening the cardiovascular system. The heart is working efficiently, reducing it to become powerful and rare. Physical exercise have a great influence on the formation of the breathing apparatus.
Exercise increases lung capacity with 3-5 liters in untrained to 7 or more litres in athletes. And the more consumed with the inhaled air oxygen, the higher the physical health of a person, the better his health. Under the action of physical exercises develop basic physiological properties of muscle fibers: excitability, contractility and distensibility. These properties provide improved physical qualities, such as, strength, speed, endurance, and improves coordination.
Develops, strengthens muscles and bones and ligaments. Increases the strength and the solidity of the bones, the elasticity of ligaments, increases joint mobility. Regular physical exercise improves blood flow to the brain, increase the functional nervous system at all levels, normalize the processes of excitation and inhibition form the basis of the physiological activity of the brain.
Systematic physical culture and sports is the continuous improvement of organs and systems of the human body. This mainly is a positive impact of physical education on health promotion.
Exercise also causes positive emotions, cheerfulness, creates a good mood. Therefore, it becomes clear why people who know the “taste” of physical exercises and sports, strives to regularly practice them.
To date, the obvious role for the development of mass forms of physical culture. Introduction to physical education is very important for women, the health of which depends on the quality of offspring; for children and adolescents, the development of the body which are in dire need of a high level of mobility; for the elderly to maintain the vigor and longevity.