Which of the following would be the most appropriate change to a training phase for a tactical athlete during deployment when stressors might be high?

The most appropriate change to a training phase for a tactical athlete during deployment when stressors are high involves implementing moderate intensity with moderate repetitions and decreased frequency. This approach acknowledges the reality of the additional stressors that come with deployment, including mental and physical fatigue, reduced recovery capacity, and potentially disrupted training schedules.

Moderate intensity and repetitions allow for the maintenance of strength and conditioning levels without overtaxing the athlete's already stressed system. This level of training reduces the risk of injury, which is critical when operational demands may be unpredictable. Additionally, the decreased frequency of training sessions helps to accommodate for the increased stress and potential recovery needs. This balanced approach promotes sustainability and effectiveness in maintaining performance while managing the additional challenges faced during deployment.

In contrast, the other options suggest training modalities that could either overstrain the athlete or not adequately address the specific needs during high-stress times. High intensity or very high intensity routines, along with low repetitions, may lead to increased fatigue and a heightened risk of injury, which is not advisable under challenging conditions. Low intensity with high repetitions could promote endurance but might not be aligned with the types of strength and power demands encountered in tactical operations, making it less effective during this crucial period.