Strength coaches can determine a 1 RM to design a percentage of load for a specific exercise. Increasing the intensity of an exercise by increasing the velocity of movement is important when a major goal is to increase the power output of a muscle and not just its ability to lift maximal loads. You determine by trial the exact amount of weight that fills that requirement. In the past, people determined resistance from the maximum amount of weight you could use for one repetition. However that method presents a high risk of injury.
Strength training is at the opposite end of the continuum from endurance training .
Repetition Maximum is a range from strength to endurance. Use it as a guide to determine which primary muscle feature you want to develop. A routine is a combination of exercises to work a specific muscle group. An example of a routine for working the pectorals would consist of several sets of exercises that incorporate bench presses, dips and cross-over cable movements. When you lower a specific weight, you allow muscle to lengthen along with the resistance.