Which component is NOT generally associated with endurance training?

In the context of endurance training, muscular contraction is not typically emphasized as a primary component compared to other facets such as heart rate elevation, steady-state exercise, and prolonged activity. Endurance training primarily focuses on activities that enhance the cardiovascular system and the body's ability to sustain prolonged physical activities, which means that heart rate elevation is a significant indicator of endurance efforts as it reflects how well the heart can supply blood to the muscles during extended exercise.

Steady-state exercise is also crucial in endurance training as it involves maintaining a consistent level of exertion over a longer duration, allowing the body to adapt and improve its aerobic capacity. Prolonged activity speaks directly to the essence of endurance, where the goal is to sustain movement and effort over an extended period.

In contrast, while muscular contraction is involved in all forms of exercise, it is particularly highlighted in strength training or resistance workouts rather than endurance training. This distinction solidifies muscular contraction as less central to the goals and methods primarily involved in developing endurance.