Tiredness

From my experience:

When an athlete is tired from a heavy training load (despite good rest) they will be able to row well and achieve good training speeds at lower rates and intensities but if asked to do high intensity and high rate pieces they will not be able to produce the boat speed required. They may struggle to achieve rates they would normally comfortably row in races.

If they are however tired from not enough rest (such as a late night partying the night before) then they will struggle with the lower intensity paddling as they find it difficult to maintain focus but if asked to do shorter higher intensity pieces can generally achieve good speeds.

Knowing the difference between these two symptoms is important as it can help the coach identify whether the problem is UNDER RECOVERY or OVER TRAINING/OVER REACHING