Final answer:
In HIIT applied to weight training, rest periods are typically decreased to increase workout intensity. The exact rest period may vary depending on the individual's fitness level. The correct option is2.
Step-by-step explanation:
When HIIT (High-Intensity Interval Training) is applied to weight training, the rest periods are typically decreased. This is in line with the core principles of HIIT, which involve short bursts of high-intensity exercise followed by very short rest periods. The idea is to increase the intensity of the workout by performing exercises at a high level of effort, and then taking a brief rest before returning to another high-intensity set.
The duration of rest can alter the target energy systems and can affect the overall intensity and purpose of the workout session. However, even though rest periods are generally decreased, the exact length of the rest interval may still depend on the individual's fitness level. A more fit individual might require shorter rest periods compared to someone who is just beginning their fitness journey.