Billat 2001, Interval training for performance

Reviews interval training prescriptions for aerobic development. Discusses rep durations near vVO2max and work-rest ratios, though the specific parameters most commonly attributed to this paper (e.g. ~3–5 min reps, ~1:1 work-rest, 90% VO2max threshold) are not confirmed in the abstract and may originate partly from companion work. Moderate.