Question

1 which of the following is an example of a dynamic stretch? quad stretch high knees calf stretch jogging 2 what is the primary purpose of a long run? improve speed strengthen leg muscles build endurance enhance lactate threshold 3 what is the primary purpose of fartlek training? enhance both speed and endurance strengthen leg muscles improve lactate threshold aid in recovery

Explanation:

1. Dynamic stretches involve movement. High knees is a dynamic stretch as it moves the body parts actively. Quad stretch and calf stretch are static stretches (holding a position), and jogging is a form of exercise, not a stretch.
2. A long - run is mainly for building endurance. While it can have some secondary effects on leg muscles, improving speed is more related to sprint - like exercises, and enhancing lactate threshold is more about interval - type training.
3. Fartlek training combines different intensities of running (e.g., periods of fast running and slow running). This combination helps in enhancing both speed (from the fast parts) and endurance (from the overall duration and varying intensities). Strengthening leg muscles is more about resistance training, improving lactate threshold is more specific to certain types of interval training, and aiding in recovery is not the primary purpose of Fartlek.

Answer:

1. High knees
2. Build endurance
3. Enhance both speed and endurance