Training: Some anatomical and physiological adaptations

Some of the anatomical and physiological adaptations of training

Some of the anatomical and physiological adaptations of training

One of the biggest evidence of physiological change with resistance training, is the choice in the metabolism of the substrates. In little or no trained people, the substrate chosen by the muscle fibers for movement muscle glycogen reserves. It is seen over time in practice, in resistance training, as this substrate chosen will be replaced by another that give you energy for longer periods. Resistance training is a reduction in production, uptake and oxidation of plasma glucose and glycogen stored in pursuit of greater use of free fatty acids.

This change of substrate is induced by the further development of type I muscle fibers, oxidative fibers are developed with resistance training, remembering that induced a further development of them when the train is fasting, an increase of number and size of mitochondria, as well as the sensitivity of its action in the chain of cellular respiration. Endurance athletes are more glycogen sparing (but always requires a certain percentage of glycogen for the combustion of lipids) and opt for fatty acid oxidation.

This is also correlated with an increase in capillary density, increased infiltration of muscle triglyceride, the greater rate of release of free fatty acids from the adipocyte to be oxidized, and a lower formation of lactate with a greater chance use as an energy source. This also allows the remaining glycogen and blood glucose needed, especially considering that we have a glucose-dependent brain and its lack may have lethal consequences. This gives greater strength and ability to obtain explosive fuel-saving prototype as glycogen (muscle reserves and liver) and so long to finish resistance tests such as the marathon.

Another important adaptation is the increased density of capillaries in muscle. A muscle that's going to grow due to the training assumes that you are experiencing both anatomical and physiological adaptations. If you want a muscle group has more power, more strength, allowing a variety of exercises, respond with prompt recovery to training, easily respond to the cleaning of waste cellular catabolism, improved nutrient uptake, better heat removal, exchange gas, etc. will require an increase of capillary density to adequately respond to all these requirements.

Having a greater capacity of cellular communication (nerve and increased capillary network) improved tissue oxygenation, is more effectively removed from the combustion of waste and something very important: a more effective distribution of blood flow, since the increase capillary surface, decreasing the speed and distance for the exchange of oxygen in the mitochondria, and maintaining the flow of the heart and this is more effective with less demand for muscle blood after finishing training. This excess of blood flow can be derived then to kidney and liver, thereby allowing a higher metabolic activity of each one.

With the information training induces cell, which means these morphological changes will be interesting to have a good rest and nutrition which can act as hormones and growth factors, both for the repair of damaged tissue and for the creation of new capillary networks, neural, etc.

Related topics:
Exercise and Triglycerides
Sports Recovery

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