The word intensity as it applies to Prilepin's chart for determining the optimal weight for reps and sets, is one thing, but I will assume you are asking what is the effect on your central nervous system if you perform an exercise faster. If you train faster with an increased speed, you will become faster in that exercise. Training slow makes you slow. There are those who say that as long as you train to failure, you will be activating the fast twitch muscle fibers and so you do not have to train so fast but most strength athletes use some type of speed training.
It must be noted that for speed strength training to have any great effect on your athleticism, you should be fairly strong first. Lift heavy things first and then work on your speed. This seems to be the best protocol.
If you have a good posture alignment, you have a forward lean which possibly has an effect on speed. Also if you run fast, you tend to lean forward. A good posture is very important, since a bad posture increases the risks of injury, when you run.
Lever length refers to joint flexion or extension. Longer is a higher intensity and shorter is less intensity.
There are many methods that acceptable to assess exercise intensity. All of these methods should be recommended for your body specifically by a doctor.
Pilates is all about the "quality" of the exercise.
Depends on the type of exercise, the intensity of the exercise, the duration of the exercise.
which type of exercise increases fat loss A.high intensity B.high duration C.high duration/low intensity D.high intensity/low duration
It greatly depends on the intensity and duration of the exercise you do.
How hard you work during exercise
Yes
Rest
Interval training consists of repeated bouts of high to moderate-intensity exercise inter-spread with periods of rest or reduced-intensity exercise.
RPE, THR, and MET are all ways to measure exercise intensity
It will depend on the intensity of your performance and the type of exercise you do.