In a flexibility training protocol, what type of stretching should be executed after a training session?

Static or pre-contraction stretching is the appropriate choice for a flexibility training protocol after a training session because it helps to relax the muscles and improve overall flexibility. This type of stretching involves holding stretches at a comfortable length for a period of time, which allows the muscle fibers to elongate and promotes recovery. It also aids in reducing muscle soreness and tightness following intense exercise.

While dynamic stretching is effective for warming up before a workout, its purpose is to prepare the muscles for activity rather than to assist with recovery post-exercise. Ballistic stretching, which involves bouncing movements, could increase the risk of injury if done when muscles are not adequately warmed up, and is not recommended as a post-training method. Active range of motion stretching focuses on active movements to improve flexibility while still under load, which isn't as effective for enhancing relaxation and recovery after a workout. Therefore, static or pre-contraction stretching plays a crucial role in the cooldown process following exercise.