Which statement best differentiates steady-state aerobic exercise from high-intensity interval training?

• A. High-intensity interval training uses continuous maximal effort.
• B. Steady-state involves continuous moderate effort.
• C. HIIT involves prolonged steady pace.
• D. Steady-state is performed at near-maximum effort.

Answer: (B)

Steady-state aerobic exercise is all about keeping a constant, moderate level of effort for a long time. Your heart rate stays in a sustainable range, and you can carry on without breaks because the body relies on the aerobic energy system. High-intensity interval training, on the other hand, is built from short bursts of near-maximal effort followed by periods of rest or lower intensity, so the pace isn’t continuous and steady.

That makes the statement about steady-state being continuous and moderate the best differentiator. The other options describe patterns that don’t fit HIIT or steady-state: HIIT isn’t continuous maximal effort, it’s bursts with recovery; HIIT isn’t a prolonged steady pace; steady-state isn’t performed at near-maximum effort.