What condition is defined as a chronic psychological and physiological state resulting from excessive training loads?

The condition defined as a chronic psychological and physiological state that results from excessive training loads is accurately referred to as overtraining. Overtraining occurs when an athlete trains beyond their body's ability to recover, leading to a decline in performance, increased fatigue, and various psychological and physical symptoms. It indicates an imbalance between training and recovery, where the intensity and volume of exercise exceed the body's capacity to adapt.

In the context of improving performance, recognizing and addressing overtraining is crucial. Athletes must ensure adequate recovery, nutrition, and psychological support to maintain optimal performance levels and prevent burnout.

The other options suggest different concepts related to training. Undertraining refers to insufficient training, which would not lead to the symptoms described. Overtraining Syndrome is often used to describe the extended effects and symptoms associated with overtraining, while overload refers to a training principle where the training load is incrementally increased to improve performance. However, the fundamental term describing the chronic state resulting directly from excessive training loads remains overtraining.