So many benefits in Physical Activities (Walking ,Running ,Cycling ) !!! (Y) The brain activates the muscles that make us move and exercise on the body.Blood circulation increases through increased pumping of the heart and dilation or widening of vessels in the activated muscles. Body temperature goes up over the coming minutes. Oxygen levels,calcium levels, and energy state is changed. So one single session of brisk walking or cycling, for example, leads to a lower blood pressure in the following 6 to 12 hours and also better glucose control and control of triglyceride or fat levels in the blood. It lasts between six hours and up to two days. Importantly, the heart adapts to regular endurance training over time by becoming larger and having a larger ejection fraction, which means that it pumps out more per beat. This leads to a lower heart rate at rest and during some maximal exercise. The vessels, the vascular, adapts, as well. First of all, the number of capillaries per surface area in skeletal muscles and in the heart goes up. That means that the blood can more easily release oxygen and glucose and take up various types of waste products. For example, lactate. The vessels also become better at widening so that dilatory capacity of the vessels goes up. That means that blood flows more easily through when the vessels widen more easily. This is regulated through the formation of nitric oxide and other mechanisms. In the blood, the composition changes somewhat. First of all, the red blood cells increase in total number in the body. But the count in a blood sample might go down because the plasma volume expands even more. The endocrine system, or the hormones, are influenced also. Importantly, the concentration of adrenaline, cortisone are reduced at rest and at the maximal exercise, which relieves the heart and other tissues from stress, to a large degree. Also, insulin sensitivity goes up, which means that the pancreas does not have to release as much insulin to get the same amount of glucose into the muscles. And lower insulin levels is a sign of health, as well. In the skeletal muscle, mitochondrial capacity and density goes up. The mitochondria are the energy extractors from glucose and lipids. And they form ATP with the help of oxygen. And a denser mitochondria network in the muscles and in the heart and in other tissues is very important for function and health and also for delaying aging processes. And then we have more direct effects on the brain cells, the neurons, themselves. So physical activity activates neurons as we work but also we get a lot of sensory input. And this together seems to stimulate the formation of new brain cells, neuro genesis. In summary, increased mitochondrial density in skeleton heart muscle, as well as in the brain, increased formation of glucose transporters, which help to increase insulin sensitivity, the formation of NO, nitric oxide, which helps to widen vessels, but also to prevent or inhibit blood clotting through inhibition of thromboses or blood platelets, reduced levels of stress hormones, improved systemic inflammation pressure, increased mineral and collagen formation in bone, better muscle control around joints, which lessens the risk for falling, increased pain threshold and pain tolerance, enhance neuro genesis formation of new brain cells, and, of course, improved fitness, which makes daily life simply easier to take care of.
Posted on: Sun, 05 Oct 2014 07:18:43 +0000
Trending Topics
Recently Viewed Topics
© 2015