Speed development is specific to the position and distance an athlete is training for. Different positions require different types of speed training, such as explosive training for initial acceleration, plyometric training for the first 10 meters, and transitioning into top-end speed for longer distances. Football players and soccer players have different energy system demands, with football players having stoppages in play and soccer players requiring continuous sprinting. Training for speed should be specific to the athlete's needs and position, and periodization is crucial for optimal results.