TrainX Scores are designed to be used by athletes, not RunDot or TriDot's optimization engine. TrainX Scores themselves don’t directly affect your training optimization. However, the same training data that is used to produce your TrainX Scores is also used to optimize your training but at a much more granular level.
Aside from the expected reasons for poor scores such as training sessions that are executed substantially differently than how they were prescribed, there are several other causes for “poor” scores such as missing or corrupt data, changing training environment, injury, mechanical issues, and so forth. In any case, don’t worry about a poor TrainX Session Score. Learn from it, if possible, and adjust in the future.
No. Perform each session to the best of your ability. If you get a lower score than you’d like or expect, try to determine why and make adjustments to your training execution in the future.
Only sessions that are prescribed are scored. Athlete-created sessions in most cases will negatively impact recovery from prior sessions, hinder performance on future sessions, will be detrimental to overall training progress, and will unnecessarily increase injury risk. At this time, these sessions have no impact on TrainX Scores.