Final answer:
Fartlek training is the term used to describe a type of interval training that involves incorporating various training speeds and terrains for outdoor aerobic conditioning. It is distinct from Tabata training, which is focused on high-intensity bodyweight exercises and shorter rest periods.
Step-by-step explanation:
The type of interval training that incorporates diverse training speeds and terrains for aerobic conditioning performed outside is called Fartlek training. Fartlek, which means "speed play" in Swedish, combines continuous training with interval training. Fartlek runs are a very simple form of a long distance run but with blocks of faster running increasing the aerobic and anaerobic benefits of the exercise.
On the other hand, Tabata training is a type of high-intensity interval training (HIIT) that consists of eight sets of fast-paced exercises each performed for 20 seconds interspersed with a brief rest of 10 seconds. Both Fartlek and Tabata improve endurance but Tabata has a greater focus on high intensity bodyweight exercise. Meanwhile, Pyramid training is about gradually increasing then decreasing the intensity of the workout, and HIIT training (High-Intensity Interval Training) is characterized by short, intense bursts of physical activity, alternated with intervals of lighter activity or rest.