Long-distance triathlon glossary·Interval

Interval : Interval training session

Load

High-intensity repetitions alternating with controlled recovery periods.

An interval session alternates intense efforts with recovery periods. Target intensity can be Z4 threshold (e.g. 4×10 min), Z5 VO2max (e.g. 5×3 min), or Z6 anaerobic (e.g. 8×30 s). The work-to-rest ratio varies by goal: closer to 1:1 means more VO2max-specific work. In long-distance triathlon, intervals are mostly sub-threshold to avoid excessive recovery debt.

In TriPaced:

In TriPaced, interval sessions appear during Build and Peak phases based on your FTP and CSS. The planner adjusts reps and recovery duration to stay within your target weekly TSS.

Related terms

  • TSS : Training Stress Score
  • CTL : Chronic Training Load (fitness)
  • ATL : Acute Training Load (fatigue)
  • TSB : Training Stress Balance (freshness)
  • Sweet spot : the efficiency zone
  • Threshold : the upper sustainable limit