Questions: John goes running around his neighborhood everyday after work. What health-related factors will he be improving through this type of training?

The answer is the first one: cardiovascular efficiency and muscular strength.

Explanation for each option:

• Cardiovascular efficiency and muscular strength: Running regularly improves cardiovascular efficiency by strengthening the heart and increasing lung capacity. It also enhances muscular strength, particularly in the legs, as the muscles adapt to the repetitive motion and resistance of running.

• Power and speed: While running can improve speed to some extent, it is not primarily focused on developing power, which involves explosive strength and is typically enhanced through activities like sprinting or weightlifting.

• Agility and speed: Running in a straight line, as typically done in neighborhood jogging, does not significantly improve agility, which involves quick changes in direction and is better developed through specific drills and sports.

• Cardiovascular efficiency and speed: While running does improve cardiovascular efficiency, it is not primarily focused on enhancing speed unless specific speed training is incorporated.

In summary, regular running primarily enhances cardiovascular efficiency and muscular strength.