A wonderful thing about your cardiovascular system is that it adapts and grows stronger and more efficient if you give it a stimulus ( like aerobic training). People who ware inactive and out of shape can see huge improvements in their cardiovascular and aerobic abilities. Aerobic fitness comes about due to a number of specific adaptations, which we examine in the following sections.
to make changes in the cardiovascular and muscular systems, you need a well -balanced conditioning program that includes both aerobic and strength training.
People say practice makes perfect. Well, that may sounds true only if the practice itself is near perfect. Bodies tend to adapt to the exercise conditions they are given. Run slowly, and you improve at running slowly. Specificity of training means that improvements in training are specific to what your are doing and includes things like the speed of movement, the load lifted, the intensity of the exercise, the angle of position of the limbs, the environment ..... etc you get the idea. Improvement in training is very difficult to please.
Energy systems are simply a combination of chemical reactions. hey start with a molecule and use enzymes to help the reactions take place. The more enzymes you have, the faster you make ATP, and the way to get more enzymes is to train in ways that use particular enzymes.
Upright walking is unique to us, and most of us get the basics down by the time we are 12 months old. Locomotion is programmed into our basic nervous system functions ( we don't need to think about it when we walk). Sensory signals then help shape or modify our movements, specific to the demands. When talking about walking locomotion, the term frequently used is gait.
Watch how people walk. Do they simply stride with arms at their sides in a stiff upright position? No! instead you will notice a rhythm and relationship between the leg stride, arm swing and trunk rotation. Walking is like dancing, as we explain in the next sections.
Most research indicates that the coordination of walking is a centralized ( nervous system) control, where a pattern of signals is generated for normal walking. For this reason, a disruption in walking patterns could indicate a problem with the central nervous system.
When it comes to making ATP, you know that you need a starting fuel (carbohydrates, phosphocreatine, or fat) and then a way to transform the molecules to get the energy out of them. So what magic ingredient transforms the molecules?
Answer is B: Enzymes!
As we explain earlier, enzymes are the components that drive chemical reactions. What's particlulary interesting - and helpful in the context of improving performance - is that you can created more enzymes. How? By training!!
The key is to tailor the training needs to the type of enzyme changes you want.