Which of the following is NOT a type of injury mentioned in Army training?

In the context of Army training, "under training" is not recognized as a type of injury. The Army focuses on various injuries or conditions that can result from the physical demands of training, including overuse, overtraining, and overreaching.

Overuse injuries typically occur from repetitive stress on muscles or joints, often due to inadequate rest or recovery periods. Overtraining refers to a decline in performance due to excessive training without sufficient recovery, leading to fatigue and possible injuries. Overreaching indicates a point just before overtraining, where performance may temporarily decrease but can improve with adequate rest.

"Under training," however, does not describe an injury in the way that the other terms do. Instead, it suggests insufficient physical training, which may not directly correlate with physical injuries in the same context as the other types. This distinction makes it clear why "under training" does not fit within the category of recognized injury types in Army training.