The benefits of morning exercise - interview with Professor of medic
- Tell me, Professor, do you do morning exercises? - Certainly. My every day starts with twelve exercises on the study of the joints and warm up all muscle groups. - What about running, dumbbell?…

Read more...

Loads of man under the action of extreme factors
In all cases, adaptation is not difficult to distinguish between physiological adaptation in the form of installation activities to a new level of reference. Scientific and technical progress deepens the relationship of society with nature,…

Read more...

How to choose a trainer for doma
  Regular exercise is essential for health – it is an indisputable fact. Only busy big cities is very difficult to find time to visit the fitness club, and the subscription price may be high.…

Read more...

Muscle activity

 

Whatever it was, for a long period of implementation of two-phase muscle activity. ochevidnoj neobhodimo permanent restoration ( re-synthesis) adenosine triphosphate as the muscle it is quickly consumed. As a result of this constant regeneration ( resynthesis) adenosine triphosphate at the expense of other metabolic processes in the number of its muscles at a

moderate work practically does not change. Only at very long and hard work there has been some decrease in the content of ATP in muscle tissue.

From the above data it follows that in the implementation of the two-phase muscle activity plays a very important role in the mechanism of regulation of the sarcoplasmic reticulum content in muscle fibers CA ion. The binding and release of CA ions in the sarcoplasm, probably depends on the change of the potential sarcoplasmatic-ical membranes. The magnitude of the potentials of these membranes, in turn, can very quickly be changed under the influence of nerve impulses.

When performing the same, even simple movements, the organization of muscle activity to a great extent depends on the intervention of non-muscle forces, in particular external to the person. So, when struck with a hammer, when the mass of the forearm is added the mass of the hammer and, therefore, the role of inertia, the extension of the forearm is a ballistic type of movement – muscles-extensors are active only at the beginning of the extension, which is further accomplished by inertia, and in the end slows down the muscles-antagonists. If the first of these two movements predominant role of the programme, the second the role of feedbacks.

Of great interest is the question of the possibility of the transfer of modern ideas about the mechanism of muscle activity at various other forms of cell contraction. It is established that the basis of various forms of cell movement in most cases is one and the same factor – the change in the internal structure of contractile proteins as a result of their interaction with energy-rich polyphosphoric compounds type of ATP.

Of great interest is the question of the possibility of the transfer of modern ideas about the mechanism of muscle activity at various other forms of cell contraction. It is established that the basis of various forms of cell movement in most cases is one and the same factor – the change in the internal structure of contractile proteins as a result of their interaction with energy-rich palifosfamide type compounds ATP.

Oxygen does not participate in the implementation of this first, most important phase of muscle activity .

The theory of exhaustion of energy in the running body based on the assertion that during muscular activity completely spent of energy and other critical resources. The decrease in the volume of these resources in the muscles n the blood causes muscle fatigue. The faster energy resources are consumed in the working organs of the body, – the more attenuation occurs the health of the corresponding body, the sooner atom-Lenta.

The aim of the final part of physical education classes ( lessons) to provide a gradual transition from increased muscle activity to moderate, to remove physical agitation, while maintaining a cheerful mood in children and adolescents.

Interesting from the point of view of chemists, the process of direct conversion of chemical energy into mechanical energy for muscular activity of living organisms .

During prolonged physical work fatigue occurs, which, in particular, is manifested in the change of coordination of muscle activity. Excitation of each working muscles becomes less concentrated in time. We are involving other muscles, first synergists, compensating the decline in the strength of the major muscles, and then, as the tones discoordination and other muscles, in particular antagonists. Movements become less precise, the rate slows down.

Thus, due to the constant resynthesis of ATP from ADP during glycolysis energy of glycolysis can be used in muscular activity .

However, research by A. G. Genetische and others have shown that exercise provides coordination of all processes necessary for muscular activity. only in those cases where the activity of the muscles have adequate spacing required for the recovery process. Otherwise, the muscle may come gradually increasing exhaustion.

In the muscles of vertebrates is present in considerable amounts of phospho-creatine ( 75), which is able to quickly replenish consumed during intense muscle activity, the ATP, passing the remainder of the phosphoric acid in accumulating ADP.

What would, however, nor was the mechanism for the use of ATP energy for muscular contraction for a long period of implementation of two-phase muscle activity. obviously, you need a permanent restoration ( resynthesis) adenosine triphosphate as the muscle it is quickly consumed. As a result of this constant regeneration ( resynthesis) adenosine triphosphate at the expense of other processes sharing the number of its muscles at a moderate work practically does not change. Only at very long and hard work there has been some decrease in the content of ATP in muscle tissue.

Metabolism, and hence the power consumption is markedly increased during operation, especially during the work associated with enhanced muscle activity. Naturally, in this regard, and increases the need for new sources of energy from food. And the more physical exertion required by the work, the more you need to increase your calorie intake.

.