Intensity and workout quality
Intensity can be defined as the quality of your training in a given period of time. It is measured according to the type of exercises performed.
The heart rate, for example, is a good parameter to evaluate the intensity of the workout. In fact, thanks to it we can calculate at what intensity you have to work to achieve your fitness goals.
In fitness, in order to improve, athletes must continually work harder as they their bodies adjust to existing workouts. The “overload concept” is one of the most important principle in fitness training. When you work with overloads, the parameter used for the calculation of the intensity can be given either by the number of repetitions, or the weight used, or the speed of movement.
When you have your workout the relationship between duration and intensity must always favour intensity, since after about 45-50 minutes from the start there is a progressive increase of some hormones, including cortisol, which tend to catabolize muscle structures using proteins for energy purposes.
On the contrary, with a high intensity and short duration training you have the right stimulation for hormone levels and muscle, with the production of testosterone, which stimulates the protein synthesis.